./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/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_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/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 32bit --witnessprinter.graph.data.programhash ff4df92f17be79f8174f1685ca28a80f864cb8ac11d461ab1471f692fbb9adc8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:48:09,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:48:09,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:48:09,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:48:09,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:48:09,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:48:09,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:48:09,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:48:09,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:48:09,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:48:09,285 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:48:09,285 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:48:09,286 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:48:09,286 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:48:09,287 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:48:09,287 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:48:09,288 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:48:09,288 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:48:09,289 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:48:09,290 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:48:09,290 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:48:09,291 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:48:09,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:48:09,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:48:09,293 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:48:09,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:48:09,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:48:09,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:48:09,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:48:09,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:48:09,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:48:09,296 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:48:09,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:48:09,297 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:48:09,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:48:09,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:48:09,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:48:09,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:48:09,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:48:09,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:48:09,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:48:09,300 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:48:09,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:48:09,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:48:09,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:48:09,301 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:48:09,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:48:09,301 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_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff4df92f17be79f8174f1685ca28a80f864cb8ac11d461ab1471f692fbb9adc8 [2023-12-02 15:48:09,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:48:09,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:48:09,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:48:09,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:48:09,586 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:48:09,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i [2023-12-02 15:48:12,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:48:12,896 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:48:12,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i [2023-12-02 15:48:12,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/data/14054ac03/d6a56ec6c1b34786a4d967fe13acc0b6/FLAGccf93f0d7 [2023-12-02 15:48:12,923 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/data/14054ac03/d6a56ec6c1b34786a4d967fe13acc0b6 [2023-12-02 15:48:12,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:48:12,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:48:12,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:48:12,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:48:12,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:48:12,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:48:12" (1/1) ... [2023-12-02 15:48:12,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363c6cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:12, skipping insertion in model container [2023-12-02 15:48:12,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:48:12" (1/1) ... [2023-12-02 15:48:12,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:48:13,129 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_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i[916,929] [2023-12-02 15:48:13,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:48:13,188 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:48:13,203 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_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-76.i[916,929] [2023-12-02 15:48:13,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:48:13,243 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:48:13,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13 WrapperNode [2023-12-02 15:48:13,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:48:13,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:48:13,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:48:13,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:48:13,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,286 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-12-02 15:48:13,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:48:13,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:48:13,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:48:13,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:48:13,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:48:13,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:48:13,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:48:13,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:48:13,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (1/1) ... [2023-12-02 15:48:13,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:48:13,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:48:13,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:48:13,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:48:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:48:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:48:13,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:48:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:48:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:48:13,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:48:13,471 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:48:13,474 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:48:13,739 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:48:13,875 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:48:13,875 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:48:13,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:48:13 BoogieIcfgContainer [2023-12-02 15:48:13,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:48:13,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:48:13,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:48:13,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:48:13,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:48:12" (1/3) ... [2023-12-02 15:48:13,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa0c20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:48:13, skipping insertion in model container [2023-12-02 15:48:13,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:48:13" (2/3) ... [2023-12-02 15:48:13,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa0c20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:48:13, skipping insertion in model container [2023-12-02 15:48:13,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:48:13" (3/3) ... [2023-12-02 15:48:13,888 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-76.i [2023-12-02 15:48:13,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:48:13,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:48:13,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:48:13,961 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;@302ada88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:48:13,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:48:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 15:48:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 15:48:13,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:13,976 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:13,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:48:13,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash -628668106, now seen corresponding path program 1 times [2023-12-02 15:48:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:48:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484652553] [2023-12-02 15:48:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:48:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-02 15:48:15,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:48:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484652553] [2023-12-02 15:48:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484652553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:48:15,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632235729] [2023-12-02 15:48:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:15,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:48:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:48:15,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:48:15,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:48:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:15,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 15:48:15,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 116 proven. 24 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 15:50:26,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-02 15:51:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632235729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:51:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [553147429] [2023-12-02 15:51:10,080 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 15:51:10,080 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:10,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:10,090 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:10,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:53:53,276 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 94 for LOIs [2023-12-02 15:53:53,318 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:54:03,475 WARN L293 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 352 DAG size of output: 103 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:54:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [553147429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:54:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:54:03,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [6, 7, 5] total 33 [2023-12-02 15:54:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337275499] [2023-12-02 15:54:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:54:03,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:54:03,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:54:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:54:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:54:03,506 INFO L87 Difference]: Start difference. First operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 24 states, 13 states have (on average 1.0) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:54:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:54:07,272 INFO L93 Difference]: Finished difference Result 117 states and 155 transitions. [2023-12-02 15:54:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 15:54:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 13 states have (on average 1.0) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2023-12-02 15:54:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:54:07,282 INFO L225 Difference]: With dead ends: 117 [2023-12-02 15:54:07,282 INFO L226 Difference]: Without dead ends: 85 [2023-12-02 15:54:07,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=771, Invalid=2651, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 15:54:07,290 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:54:07,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 172 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:54:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-02 15:54:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2023-12-02 15:54:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 15:54:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2023-12-02 15:54:07,347 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 60 [2023-12-02 15:54:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:54:07,348 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2023-12-02 15:54:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 13 states have (on average 1.0) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:54:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2023-12-02 15:54:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 15:54:07,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:54:07,353 INFO L195 NwaCegarLoop]: trace histogram [32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:54:07,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-02 15:54:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:54:07,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:54:07,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:54:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -921684648, now seen corresponding path program 1 times [2023-12-02 15:54:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:54:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707542350] [2023-12-02 15:54:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:54:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:54:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 65 proven. 39 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2023-12-02 15:54:08,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:54:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707542350] [2023-12-02 15:54:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707542350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:54:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040794883] [2023-12-02 15:54:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:08,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:08,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:54:08,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b24dc361-a80f-4ad4-8921-5e0ec4d4f7af/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:54:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:54:08,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:54:08,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 468 proven. 10 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-02 15:56:10,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:57:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2023-12-02 15:57:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040794883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:57:41,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719487944] [2023-12-02 15:57:41,046 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-12-02 15:57:41,046 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:57:41,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:57:41,047 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:57:41,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs