./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 37b4b79db92bc49aa9cdfceca437d05e7b12666dbe0c3dacb1ef78b459e8fefa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:16:26,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:16:26,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:16:26,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:16:26,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:16:26,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:16:26,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:16:26,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:16:26,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:16:26,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:16:26,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:16:26,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:16:26,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:16:26,725 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:16:26,726 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:16:26,726 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:16:26,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:16:26,727 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:16:26,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:16:26,728 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:16:26,729 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:16:26,729 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:16:26,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:16:26,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:16:26,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:16:26,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:16:26,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:16:26,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:16:26,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:16:26,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:16:26,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:16:26,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:16:26,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:16:26,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:16:26,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:16:26,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:16:26,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:16:26,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:26,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:16:26,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:16:26,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:16:26,736 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:16:26,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:16:26,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:16:26,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:16:26,737 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:16:26,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:16:26,737 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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b4b79db92bc49aa9cdfceca437d05e7b12666dbe0c3dacb1ef78b459e8fefa [2023-12-02 18:16:26,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:16:26,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:16:26,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:16:26,976 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:16:26,976 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:16:26,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:29,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:16:29,920 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:16:29,921 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:29,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/8a0d58915/8c3aefa4a1ce42b58a9d9ed2b200769e/FLAGd57926d0a [2023-12-02 18:16:29,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/8a0d58915/8c3aefa4a1ce42b58a9d9ed2b200769e [2023-12-02 18:16:29,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:16:29,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:16:29,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:29,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:16:29,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:16:29,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:29" (1/1) ... [2023-12-02 18:16:29,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673d55bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:29, skipping insertion in model container [2023-12-02 18:16:29,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:29" (1/1) ... [2023-12-02 18:16:29,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:16:30,098 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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i[915,928] [2023-12-02 18:16:30,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:30,141 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:16:30,154 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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i[915,928] [2023-12-02 18:16:30,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:30,186 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:16:30,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30 WrapperNode [2023-12-02 18:16:30,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:30,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:30,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:16:30,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:16:30,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,226 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 92 [2023-12-02 18:16:30,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:30,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:16:30,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:16:30,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:16:30,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:16:30,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:16:30,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:16:30,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:16:30,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (1/1) ... [2023-12-02 18:16:30,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:30,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:16:30,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:16:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:16:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:16:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:16:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:16:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:16:30,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:16:30,404 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:16:30,406 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:16:30,623 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:16:30,741 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:16:30,742 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:16:30,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:30 BoogieIcfgContainer [2023-12-02 18:16:30,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:16:30,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:16:30,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:16:30,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:16:30,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:16:29" (1/3) ... [2023-12-02 18:16:30,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c61bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:30, skipping insertion in model container [2023-12-02 18:16:30,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:30" (2/3) ... [2023-12-02 18:16:30,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c61bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:30, skipping insertion in model container [2023-12-02 18:16:30,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:30" (3/3) ... [2023-12-02 18:16:30,752 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:30,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:16:30,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:16:30,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:16:30,818 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;@5474c8f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:16:30,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:16:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:16:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 18:16:30,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:30,829 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 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 18:16:30,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:30,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2126437511, now seen corresponding path program 1 times [2023-12-02 18:16:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:30,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352772733] [2023-12-02 18:16:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:30,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:16:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152207570] [2023-12-02 18:16:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:30,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:16:30,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:30,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:16:30,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:16:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:16:31,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:16:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:16:31,153 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:16:31,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:16:31,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:16:31,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:16:31,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 18:16:31,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:16:31,366 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:16:31,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:16:31 BoogieIcfgContainer [2023-12-02 18:16:31,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:16:31,407 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:16:31,407 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:16:31,407 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:16:31,408 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:30" (3/4) ... [2023-12-02 18:16:31,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:16:31,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:16:31,412 INFO L158 Benchmark]: Toolchain (without parser) took 1466.94ms. Allocated memory is still 159.4MB. Free memory was 118.7MB in the beginning and 96.1MB in the end (delta: 22.7MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,413 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:16:31,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.96ms. Allocated memory is still 159.4MB. Free memory was 118.7MB in the beginning and 106.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.67ms. Allocated memory is still 159.4MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,415 INFO L158 Benchmark]: Boogie Preprocessor took 30.39ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,416 INFO L158 Benchmark]: RCFGBuilder took 485.82ms. Allocated memory is still 159.4MB. Free memory was 102.5MB in the beginning and 123.0MB in the end (delta: -20.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,416 INFO L158 Benchmark]: TraceAbstraction took 660.34ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 97.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 18:16:31,417 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 159.4MB. Free memory was 97.0MB in the beginning and 96.1MB in the end (delta: 886.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:16:31,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.96ms. Allocated memory is still 159.4MB. Free memory was 118.7MB in the beginning and 106.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.67ms. Allocated memory is still 159.4MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.39ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.82ms. Allocated memory is still 159.4MB. Free memory was 102.5MB in the beginning and 123.0MB in the end (delta: -20.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 660.34ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 97.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 159.4MB. Free memory was 97.0MB in the beginning and 96.1MB in the end (delta: 886.7kB). 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: 19]: 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 someBinaryDOUBLEComparisonOperation at line 39. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 32; [L23] unsigned char var_1_7 = 1; [L24] signed char var_1_8 = -32; [L25] signed char var_1_9 = -8; [L26] unsigned char var_1_10 = 2; [L27] double var_1_11 = 15.6; [L28] double var_1_12 = 15.4; [L29] double var_1_13 = 32.2; [L30] unsigned char var_1_14 = 5; [L31] unsigned short int last_1_var_1_1 = 32; [L32] signed char last_1_var_1_8 = -32; [L33] unsigned char last_1_var_1_10 = 2; [L89] isInitial = 1 [L90] FCALL initially() [L91] COND TRUE 1 [L92] CALL updateLastVariables() [L80] last_1_var_1_1 = var_1_1 [L81] last_1_var_1_8 = var_1_8 [L82] last_1_var_1_10 = var_1_10 [L92] RET updateLastVariables() [L93] CALL updateVariables() [L63] var_1_7 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_8=-32, var_1_9=-8] [L65] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=-8] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=-8] [L66] var_1_9 = __VERIFIER_nondet_char() [L67] CALL assume_abort_if_not(var_1_9 >= -126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_9 >= -126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L68] CALL assume_abort_if_not(var_1_9 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_9 <= 126) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_11=78/5, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L69] var_1_11 = __VERIFIER_nondet_double() [L70] CALL assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not((var_1_11 >= -922337.2036854776000e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_12=77/5, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L71] var_1_12 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not((var_1_12 >= -922337.2036854776000e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_13=161/5, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=5, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L75] var_1_14 = __VERIFIER_nondet_uchar() [L76] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L77] CALL assume_abort_if_not(var_1_14 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_14 <= 254) VAL [isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=0, var_1_8=-32, var_1_9=3] [L93] RET updateVariables() [L94] CALL step() [L37] signed long int stepLocal_2 = (((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)); [L38] unsigned char stepLocal_1 = var_1_7; [L39] COND TRUE ((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13 [L40] COND FALSE !(stepLocal_1 && (last_1_var_1_8 >= var_1_9)) [L48] signed long int stepLocal_0 = ((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)); [L49] COND FALSE !(last_1_var_1_10 < stepLocal_0) [L52] var_1_8 = var_1_9 [L54] COND TRUE (var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8) [L55] COND FALSE !(\read(var_1_7)) [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return ((((var_1_10 + ((((var_1_10) > (var_1_10)) ? (var_1_10) : (var_1_10)))) < (var_1_10 * var_1_8)) ? (var_1_7 ? (var_1_1 == ((unsigned short int) var_1_10)) : 1) : (var_1_1 == ((unsigned short int) var_1_10))) && ((last_1_var_1_10 < (((((- last_1_var_1_10)) > (last_1_var_1_10)) ? ((- last_1_var_1_10)) : (last_1_var_1_10)))) ? (var_1_8 == ((signed char) ((((var_1_9) < 0 ) ? -(var_1_9) : (var_1_9))))) : (var_1_8 == ((signed char) var_1_9)))) && ((((((var_1_11) < (var_1_12)) ? (var_1_11) : (var_1_12))) <= var_1_13) ? ((var_1_7 && (last_1_var_1_8 >= var_1_9)) ? ((last_1_var_1_1 <= ((((last_1_var_1_8) < (last_1_var_1_8)) ? (last_1_var_1_8) : (last_1_var_1_8)))) ? (var_1_10 == ((unsigned char) var_1_14)) : 1) : 1) : (var_1_10 == ((unsigned char) var_1_14))) ; [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=0, var_1_8=3, var_1_9=3] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=2, last_1_var_1_1=32, last_1_var_1_8=-32, var_1_10=2, var_1_14=0, var_1_1=32, var_1_7=0, var_1_8=3, var_1_9=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 18:16:31,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 37b4b79db92bc49aa9cdfceca437d05e7b12666dbe0c3dacb1ef78b459e8fefa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:16:33,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:16:33,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 18:16:33,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:16:33,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:16:33,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:16:33,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:16:33,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:16:33,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:16:33,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:16:33,386 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:16:33,386 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:16:33,387 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:16:33,387 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:16:33,388 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:16:33,388 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:16:33,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:16:33,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:16:33,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:16:33,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:16:33,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:16:33,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:16:33,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:16:33,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:16:33,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:16:33,393 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:16:33,394 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:16:33,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:16:33,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:16:33,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:16:33,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:16:33,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:16:33,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:16:33,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:16:33,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:33,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:16:33,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:16:33,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:16:33,398 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:16:33,398 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:16:33,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:16:33,398 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:16:33,398 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:16:33,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:16:33,399 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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b4b79db92bc49aa9cdfceca437d05e7b12666dbe0c3dacb1ef78b459e8fefa [2023-12-02 18:16:33,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:16:33,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:16:33,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:16:33,718 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:16:33,719 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:16:33,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:36,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:16:36,840 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:16:36,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:36,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/5d0c1c6fd/f4c601a89da9473d9c0fac1957e5d852/FLAGd12371553 [2023-12-02 18:16:36,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/data/5d0c1c6fd/f4c601a89da9473d9c0fac1957e5d852 [2023-12-02 18:16:36,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:16:36,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:16:36,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:36,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:16:36,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:16:36,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:36" (1/1) ... [2023-12-02 18:16:36,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2422d57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:36, skipping insertion in model container [2023-12-02 18:16:36,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:36" (1/1) ... [2023-12-02 18:16:36,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:16:37,018 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_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i[915,928] [2023-12-02 18:16:37,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:37,074 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:16:37,084 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-21.i[915,928] [2023-12-02 18:16:37,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:37,121 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:16:37,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37 WrapperNode [2023-12-02 18:16:37,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:37,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:37,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:16:37,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:16:37,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,165 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2023-12-02 18:16:37,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:37,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:16:37,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:16:37,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:16:37,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:16:37,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:16:37,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:16:37,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:16:37,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (1/1) ... [2023-12-02 18:16:37,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:37,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:16:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:16:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:16:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:16:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:16:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:16:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:16:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:16:37,378 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:16:37,380 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:16:37,658 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:16:37,702 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:16:37,703 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:16:37,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:37 BoogieIcfgContainer [2023-12-02 18:16:37,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:16:37,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:16:37,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:16:37,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:16:37,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:16:36" (1/3) ... [2023-12-02 18:16:37,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f811e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:37, skipping insertion in model container [2023-12-02 18:16:37,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:37" (2/3) ... [2023-12-02 18:16:37,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f811e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:37, skipping insertion in model container [2023-12-02 18:16:37,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:37" (3/3) ... [2023-12-02 18:16:37,713 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-21.i [2023-12-02 18:16:37,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:16:37,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:16:37,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:16:37,784 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;@618de032, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:16:37,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:16:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:16:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:16:37,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:37,802 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:37,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:37,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash -74860693, now seen corresponding path program 1 times [2023-12-02 18:16:37,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:16:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408326343] [2023-12-02 18:16:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:37,832 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 18:16:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:16:37,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:37,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:37,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:16:37,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-02 18:16:38,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:16:38,025 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:16:38,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408326343] [2023-12-02 18:16:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408326343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:38,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:16:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530396731] [2023-12-02 18:16:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:38,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:16:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:16:38,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:16:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:16:38,067 INFO L87 Difference]: Start difference. First operand has 35 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:16:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:38,120 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2023-12-02 18:16:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:16:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2023-12-02 18:16:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:38,132 INFO L225 Difference]: With dead ends: 67 [2023-12-02 18:16:38,132 INFO L226 Difference]: Without dead ends: 33 [2023-12-02 18:16:38,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:16:38,139 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:38,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:16:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-02 18:16:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-12-02 18:16:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:16:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2023-12-02 18:16:38,182 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 60 [2023-12-02 18:16:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:38,182 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2023-12-02 18:16:38,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:16:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2023-12-02 18:16:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:16:38,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:38,186 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:38,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:38,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:38,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:38,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1100731163, now seen corresponding path program 1 times [2023-12-02 18:16:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:16:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349287537] [2023-12-02 18:16:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:38,393 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 18:16:38,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:16:38,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:38,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:38,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:16:38,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:16:38,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:16:38,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:16:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349287537] [2023-12-02 18:16:38,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349287537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:38,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:38,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:16:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852940583] [2023-12-02 18:16:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:16:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:16:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:16:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:16:38,710 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:16:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:39,021 INFO L93 Difference]: Finished difference Result 107 states and 152 transitions. [2023-12-02 18:16:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:16:39,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2023-12-02 18:16:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:39,025 INFO L225 Difference]: With dead ends: 107 [2023-12-02 18:16:39,025 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 18:16:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:16:39,027 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 40 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:39,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 151 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:16:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 18:16:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-12-02 18:16:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:16:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2023-12-02 18:16:39,048 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 60 [2023-12-02 18:16:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:39,049 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2023-12-02 18:16:39,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:16:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2023-12-02 18:16:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:16:39,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:39,051 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:39,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:39,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:39,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1098884121, now seen corresponding path program 1 times [2023-12-02 18:16:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:16:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354412664] [2023-12-02 18:16:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:39,254 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 18:16:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:16:39,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:16:39,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (4)] Waiting until timeout for monitored process [2023-12-02 18:16:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:39,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:16:39,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:17:25,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:25,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:17:25,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354412664] [2023-12-02 18:17:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354412664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:25,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:17:25,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:17:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126449941] [2023-12-02 18:17:25,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:17:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:17:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:17:25,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:17:25,571 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:17:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:25,988 INFO L93 Difference]: Finished difference Result 114 states and 157 transitions. [2023-12-02 18:17:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:17:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2023-12-02 18:17:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:25,993 INFO L225 Difference]: With dead ends: 114 [2023-12-02 18:17:25,993 INFO L226 Difference]: Without dead ends: 112 [2023-12-02 18:17:25,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:17:25,995 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 62 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:25,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 168 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-02 18:17:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2023-12-02 18:17:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:17:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2023-12-02 18:17:26,019 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 60 [2023-12-02 18:17:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:26,020 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2023-12-02 18:17:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:17:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2023-12-02 18:17:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 18:17:26,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:26,022 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:26,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (4)] Ended with exit code 0 [2023-12-02 18:17:26,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:17:26,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:17:26,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 285347203, now seen corresponding path program 1 times [2023-12-02 18:17:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:17:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428013616] [2023-12-02 18:17:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:26,224 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 18:17:26,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:17:26,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:17:26,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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)] Waiting until timeout for monitored process [2023-12-02 18:17:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:26,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:17:26,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:17:39,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:39,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:17:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428013616] [2023-12-02 18:17:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428013616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:39,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:17:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:17:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685882253] [2023-12-02 18:17:39,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:17:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:17:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:17:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:17:39,419 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:17:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:39,841 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2023-12-02 18:17:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:17:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 61 [2023-12-02 18:17:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:39,845 INFO L225 Difference]: With dead ends: 118 [2023-12-02 18:17:39,845 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 18:17:39,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:17:39,847 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 51 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:39,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 18:17:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 94. [2023-12-02 18:17:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:17:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2023-12-02 18:17:39,866 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 61 [2023-12-02 18:17:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:39,866 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2023-12-02 18:17:39,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:17:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2023-12-02 18:17:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 18:17:39,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:39,868 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:39,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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)] Ended with exit code 0 [2023-12-02 18:17:40,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:17:40,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:17:40,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 285287621, now seen corresponding path program 1 times [2023-12-02 18:17:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:17:40,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570986803] [2023-12-02 18:17:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:40,071 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 18:17:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:17:40,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:17:40,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:17:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:40,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:17:40,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:18:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:18:22,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:18:22,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:18:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570986803] [2023-12-02 18:18:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570986803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:18:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:18:22,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:18:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351571765] [2023-12-02 18:18:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:18:22,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:18:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:18:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:18:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:18:22,481 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:18:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:18:22,997 INFO L93 Difference]: Finished difference Result 116 states and 159 transitions. [2023-12-02 18:18:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:18:22,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 61 [2023-12-02 18:18:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:18:23,000 INFO L225 Difference]: With dead ends: 116 [2023-12-02 18:18:23,000 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 18:18:23,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:18:23,001 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 48 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:18:23,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 170 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:18:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 18:18:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2023-12-02 18:18:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:18:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2023-12-02 18:18:23,013 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 61 [2023-12-02 18:18:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:18:23,014 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2023-12-02 18:18:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:18:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2023-12-02 18:18:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 18:18:23,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:18:23,015 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:23,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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)] Forceful destruction successful, exit code 0 [2023-12-02 18:18:23,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:18:23,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:18:23,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:18:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1366504714, now seen corresponding path program 1 times [2023-12-02 18:18:23,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:18:23,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105568600] [2023-12-02 18:18:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:18:23,217 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 18:18:23,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:18:23,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:18:23,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (7)] Waiting until timeout for monitored process [2023-12-02 18:18:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:18:23,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:18:23,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:19:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:19:10,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:19:10,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:19:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105568600] [2023-12-02 18:19:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105568600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:19:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363821027] [2023-12-02 18:19:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:19:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:19:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:19:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:19:10,180 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:19:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:11,504 INFO L93 Difference]: Finished difference Result 114 states and 156 transitions. [2023-12-02 18:19:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:19:11,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 61 [2023-12-02 18:19:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:11,506 INFO L225 Difference]: With dead ends: 114 [2023-12-02 18:19:11,506 INFO L226 Difference]: Without dead ends: 112 [2023-12-02 18:19:11,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:19:11,507 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 54 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:11,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 175 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:19:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-02 18:19:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2023-12-02 18:19:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:19:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 144 transitions. [2023-12-02 18:19:11,524 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 144 transitions. Word has length 61 [2023-12-02 18:19:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:11,524 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 144 transitions. [2023-12-02 18:19:11,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:19:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 144 transitions. [2023-12-02 18:19:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 18:19:11,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:11,526 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:11,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (7)] Ended with exit code 0 [2023-12-02 18:19:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:19:11,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:19:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -597010240, now seen corresponding path program 1 times [2023-12-02 18:19:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:19:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995808827] [2023-12-02 18:19:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:11,728 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 18:19:11,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:19:11,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:19:11,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (8)] Waiting until timeout for monitored process [2023-12-02 18:19:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:11,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:19:11,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:19:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:19:33,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:19:33,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:19:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995808827] [2023-12-02 18:19:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995808827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:19:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580905733] [2023-12-02 18:19:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:33,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:19:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:19:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:19:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:19:33,124 INFO L87 Difference]: Start difference. First operand 103 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:19:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:34,612 INFO L93 Difference]: Finished difference Result 118 states and 160 transitions. [2023-12-02 18:19:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:19:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 62 [2023-12-02 18:19:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:34,614 INFO L225 Difference]: With dead ends: 118 [2023-12-02 18:19:34,614 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 18:19:34,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:19:34,615 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:34,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 180 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:19:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 18:19:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2023-12-02 18:19:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:19:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 146 transitions. [2023-12-02 18:19:34,627 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 146 transitions. Word has length 62 [2023-12-02 18:19:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:34,627 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 146 transitions. [2023-12-02 18:19:34,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:19:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 146 transitions. [2023-12-02 18:19:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 18:19:34,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:34,629 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:34,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (8)] Ended with exit code 0 [2023-12-02 18:19:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:19:34,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:19:34,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash -597069822, now seen corresponding path program 1 times [2023-12-02 18:19:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:19:34,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196283334] [2023-12-02 18:19:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:34,831 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 18:19:34,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:19:34,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:19:34,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (9)] Waiting until timeout for monitored process [2023-12-02 18:19:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:34,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:19:34,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:20:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 18:20:16,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:20:16,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:20:16,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196283334] [2023-12-02 18:20:16,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196283334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:20:16,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:20:16,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:20:16,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221271000] [2023-12-02 18:20:16,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:20:16,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:20:16,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:20:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:20:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:20:16,474 INFO L87 Difference]: Start difference. First operand 104 states and 146 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:20:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:20:17,869 INFO L93 Difference]: Finished difference Result 116 states and 158 transitions. [2023-12-02 18:20:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:20:17,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 62 [2023-12-02 18:20:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:20:17,871 INFO L225 Difference]: With dead ends: 116 [2023-12-02 18:20:17,872 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 18:20:17,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:20:17,873 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:20:17,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 200 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:20:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 18:20:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2023-12-02 18:20:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 18:20:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 146 transitions. [2023-12-02 18:20:17,885 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 146 transitions. Word has length 62 [2023-12-02 18:20:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:20:17,885 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 146 transitions. [2023-12-02 18:20:17,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:20:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 146 transitions. [2023-12-02 18:20:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 18:20:17,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:20:17,888 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1] [2023-12-02 18:20:17,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (9)] Ended with exit code 0 [2023-12-02 18:20:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:20:18,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:20:18,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:20:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -323118347, now seen corresponding path program 1 times [2023-12-02 18:20:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:20:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781087774] [2023-12-02 18:20:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:20:18,090 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 18:20:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:20:18,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:20:18,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (10)] Waiting until timeout for monitored process [2023-12-02 18:20:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:20:18,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:20:18,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:20:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2023-12-02 18:20:18,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:20:18,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:20:18,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781087774] [2023-12-02 18:20:18,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781087774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:20:18,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:20:18,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:20:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281315208] [2023-12-02 18:20:18,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:20:18,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:20:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:20:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:20:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:20:18,248 INFO L87 Difference]: Start difference. First operand 104 states and 146 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:20:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:20:18,429 INFO L93 Difference]: Finished difference Result 162 states and 227 transitions. [2023-12-02 18:20:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:20:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 119 [2023-12-02 18:20:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:20:18,432 INFO L225 Difference]: With dead ends: 162 [2023-12-02 18:20:18,432 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 18:20:18,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:20:18,433 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:20:18,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 109 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:20:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 18:20:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2023-12-02 18:20:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 86 states have internal predecessors, (108), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 18:20:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 176 transitions. [2023-12-02 18:20:18,448 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 176 transitions. Word has length 119 [2023-12-02 18:20:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:20:18,449 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 176 transitions. [2023-12-02 18:20:18,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:20:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 176 transitions. [2023-12-02 18:20:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 18:20:18,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:20:18,452 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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 18:20:18,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (10)] Ended with exit code 0 [2023-12-02 18:20:18,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:20:18,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:20:18,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:20:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash -321271305, now seen corresponding path program 1 times [2023-12-02 18:20:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:20:18,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837527699] [2023-12-02 18:20:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:20:18,654 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 18:20:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:20:18,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:20:18,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (11)] Waiting until timeout for monitored process [2023-12-02 18:20:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:20:18,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:20:18,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:25:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2023-12-02 18:25:28,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:25:28,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:25:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837527699] [2023-12-02 18:25:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837527699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:25:28,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:25:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:25:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223764721] [2023-12-02 18:25:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:25:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:25:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:25:28,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:25:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:25:28,098 INFO L87 Difference]: Start difference. First operand 125 states and 176 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:25:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:25:28,691 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2023-12-02 18:25:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:25:28,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 119 [2023-12-02 18:25:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:25:28,693 INFO L225 Difference]: With dead ends: 147 [2023-12-02 18:25:28,693 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 18:25:28,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:25:28,694 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:25:28,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 228 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:25:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 18:25:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2023-12-02 18:25:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 18:25:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2023-12-02 18:25:28,708 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 119 [2023-12-02 18:25:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:25:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2023-12-02 18:25:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:25:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2023-12-02 18:25:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 18:25:28,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:25:28,712 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1, 1] [2023-12-02 18:25:28,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (11)] Ended with exit code 0 [2023-12-02 18:25:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:25:28,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:25:28,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:25:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1378459277, now seen corresponding path program 1 times [2023-12-02 18:25:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:25:28,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634483848] [2023-12-02 18:25:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:25:28,917 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 18:25:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:25:28,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:25:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (12)] Waiting until timeout for monitored process [2023-12-02 18:25:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:25:29,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:25:29,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:27:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2023-12-02 18:27:08,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:27:08,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:27:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634483848] [2023-12-02 18:27:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634483848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:27:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:27:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:27:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824478791] [2023-12-02 18:27:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:27:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:27:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:27:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:27:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:27:08,247 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:27:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:08,922 INFO L93 Difference]: Finished difference Result 151 states and 201 transitions. [2023-12-02 18:27:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:27:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 120 [2023-12-02 18:27:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:08,925 INFO L225 Difference]: With dead ends: 151 [2023-12-02 18:27:08,925 INFO L226 Difference]: Without dead ends: 149 [2023-12-02 18:27:08,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:27:08,926 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 59 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:08,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 225 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:27:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-02 18:27:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2023-12-02 18:27:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 18:27:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2023-12-02 18:27:08,941 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 120 [2023-12-02 18:27:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2023-12-02 18:27:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 18:27:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2023-12-02 18:27:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 18:27:08,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:08,944 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 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, 1, 1, 1] [2023-12-02 18:27:08,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (12)] Ended with exit code 0 [2023-12-02 18:27:09,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:27:09,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:27:09,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1378518859, now seen corresponding path program 1 times [2023-12-02 18:27:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:27:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902883624] [2023-12-02 18:27:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:09,146 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 18:27:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:27:09,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 18:27:09,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cadc3f4-6c15-41be-8dae-233e03e3cb3b/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 (13)] Waiting until timeout for monitored process [2023-12-02 18:27:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:09,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:27:09,290 INFO L285 TraceCheckSpWp]: Computing forward predicates...