./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.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_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:40,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:40,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:34:40,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:40,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:40,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:40,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:40,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:40,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:40,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:40,845 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:40,845 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:40,846 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:40,846 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:34:40,847 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:40,847 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:40,848 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:34:40,848 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:34:40,849 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:40,849 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:34:40,850 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:34:40,851 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:34:40,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:40,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:40,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:34:40,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:34:40,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:34:40,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:40,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:40,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:40,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:40,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:34:40,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:40,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:40,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:40,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:34:40,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:40,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:40,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:40,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:40,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:40,858 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:34:40,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:34:40,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:40,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:40,858 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:40,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:40,859 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 [2023-12-02 16:34:41,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:41,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:41,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:41,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:41,125 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:41,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:43,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:34:44,097 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:34:44,097 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:44,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/8e431bcb5/52b2b4e8f3114de2b4b1ba1f9e8eb696/FLAG55b25a08a [2023-12-02 16:34:44,118 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/8e431bcb5/52b2b4e8f3114de2b4b1ba1f9e8eb696 [2023-12-02 16:34:44,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:34:44,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:34:44,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:44,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:34:44,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:34:44,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b7279a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44, skipping insertion in model container [2023-12-02 16:34:44,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:34:44,276 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2023-12-02 16:34:44,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:44,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:34:44,350 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2023-12-02 16:34:44,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:44,411 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:34:44,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44 WrapperNode [2023-12-02 16:34:44,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:44,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:44,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:34:44,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:34:44,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,477 INFO L138 Inliner]: procedures = 29, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 522 [2023-12-02 16:34:44,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:44,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:34:44,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:34:44,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:34:44,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:34:44,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:34:44,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:34:44,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:34:44,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (1/1) ... [2023-12-02 16:34:44,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:44,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:34:44,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 16:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:34:44,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 16:34:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:34:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 16:34:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:34:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:34:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:34:44,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:34:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:34:44,714 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:34:44,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:34:45,179 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:34:45,811 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:34:45,811 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:34:45,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:45 BoogieIcfgContainer [2023-12-02 16:34:45,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:34:45,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:34:45,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:34:45,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:34:45,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:34:44" (1/3) ... [2023-12-02 16:34:45,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df3a832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:45, skipping insertion in model container [2023-12-02 16:34:45,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:44" (2/3) ... [2023-12-02 16:34:45,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df3a832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:45, skipping insertion in model container [2023-12-02 16:34:45,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:45" (3/3) ... [2023-12-02 16:34:45,820 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:45,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:34:45,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:34:45,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:34:45,878 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;@7a613fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:34:45,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:34:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:34:45,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:45,890 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:34:45,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:45,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 280752511, now seen corresponding path program 1 times [2023-12-02 16:34:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:34:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785481536] [2023-12-02 16:34:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:34:46,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:34:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020722145] [2023-12-02 16:34:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:46,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:34:46,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:46,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:34:46,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:34:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:34:47,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:34:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:34:48,471 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:34:48,473 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:34:48,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:34:48,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:34:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:34:48,681 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:34:48,684 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:34:48,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:34:48,727 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:34:48,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:34:48,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:34:48,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 16:34:48,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 16:34:48,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 16:34:48,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 16:34:48,732 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 16:34:48,732 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 16:34:48,732 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 16:34:48,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 16:34:48,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:34:48,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:34:48,733 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 16:34:48,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 16:34:48,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated [2023-12-02 16:34:48,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:34:48,734 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 16:34:48,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated [2023-12-02 16:34:48,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short81 could not be translated [2023-12-02 16:34:48,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 16:34:48,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short82 could not be translated [2023-12-02 16:34:48,735 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:34:48,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated [2023-12-02 16:34:48,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 16:34:48,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short81 could not be translated [2023-12-02 16:34:48,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated [2023-12-02 16:34:48,736 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 16:34:48,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short82 could not be translated [2023-12-02 16:34:48,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:34:48,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short86 could not be translated [2023-12-02 16:34:48,737 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem88 could not be translated [2023-12-02 16:34:48,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem85 could not be translated [2023-12-02 16:34:48,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:34:48,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short89 could not be translated [2023-12-02 16:34:48,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short90 could not be translated [2023-12-02 16:34:48,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem88 could not be translated [2023-12-02 16:34:48,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:34:48,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short86 could not be translated [2023-12-02 16:34:48,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:34:48,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short90 could not be translated [2023-12-02 16:34:48,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short89 could not be translated [2023-12-02 16:34:48,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem85 could not be translated [2023-12-02 16:34:48,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated [2023-12-02 16:34:48,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated [2023-12-02 16:34:48,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short94 could not be translated [2023-12-02 16:34:48,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated [2023-12-02 16:34:48,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short97 could not be translated [2023-12-02 16:34:48,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated [2023-12-02 16:34:48,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short98 could not be translated [2023-12-02 16:34:48,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated [2023-12-02 16:34:48,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated [2023-12-02 16:34:48,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated [2023-12-02 16:34:48,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short98 could not be translated [2023-12-02 16:34:48,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated [2023-12-02 16:34:48,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short94 could not be translated [2023-12-02 16:34:48,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short97 could not be translated [2023-12-02 16:34:48,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 16:34:48,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 16:34:48,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-12-02 16:34:48,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-12-02 16:34:48,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem102 could not be translated [2023-12-02 16:34:48,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem102 could not be translated [2023-12-02 16:34:48,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem104 could not be translated [2023-12-02 16:34:48,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem104 could not be translated [2023-12-02 16:34:48,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated [2023-12-02 16:34:48,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated [2023-12-02 16:34:48,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:34:48 BoogieIcfgContainer [2023-12-02 16:34:48,767 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:34:48,767 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:34:48,767 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:34:48,768 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:34:48,768 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:45" (3/4) ... [2023-12-02 16:34:48,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:34:48,771 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:34:48,772 INFO L158 Benchmark]: Toolchain (without parser) took 4650.71ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 97.8MB in the beginning and 120.9MB in the end (delta: -23.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,773 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:34:48,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.49ms. Allocated memory is still 127.9MB. Free memory was 97.5MB in the beginning and 81.3MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.55ms. Allocated memory is still 127.9MB. Free memory was 81.0MB in the beginning and 76.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,775 INFO L158 Benchmark]: Boogie Preprocessor took 63.41ms. Allocated memory is still 127.9MB. Free memory was 76.9MB in the beginning and 72.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,776 INFO L158 Benchmark]: RCFGBuilder took 1269.96ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 72.9MB in the beginning and 122.8MB in the end (delta: -49.8MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,776 INFO L158 Benchmark]: TraceAbstraction took 2951.78ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 121.9MB in the end (delta: 843.5kB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. [2023-12-02 16:34:48,777 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 165.7MB. Free memory was 121.9MB in the beginning and 120.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:34:48,780 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 127.9MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.49ms. Allocated memory is still 127.9MB. Free memory was 97.5MB in the beginning and 81.3MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.55ms. Allocated memory is still 127.9MB. Free memory was 81.0MB in the beginning and 76.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.41ms. Allocated memory is still 127.9MB. Free memory was 76.9MB in the beginning and 72.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1269.96ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 72.9MB in the beginning and 122.8MB in the end (delta: -49.8MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2951.78ms. Allocated memory is still 165.7MB. Free memory was 122.8MB in the beginning and 121.9MB in the end (delta: 843.5kB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 165.7MB. Free memory was 121.9MB in the beginning and 120.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short82 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short82 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem88 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem85 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem88 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem85 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short94 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short97 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short94 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short97 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem102 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem102 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem104 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem104 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 someBinaryFLOATComparisonOperation at line 56, overapproximation of shiftLeft at line 64, overapproximation of someUnaryFLOAToperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L36] unsigned char isInitial = 0; [L37-L50] struct WrapperStruct00 WrapperStruct00 = { -5, 0, 1000, 10, 32, 5, 1.1, 7.8, 1.75, 32, 64, 1230482582 }; [L110] isInitial = 1 [L111] FCALL initially() [L112] COND TRUE 1 [L113] FCALL updateLastVariables() [L114] CALL updateVariables() [L77] WrapperStruct00.var_1_2 = __VERIFIER_nondet_short() [L78] EXPR WrapperStruct00.var_1_2 VAL [WrapperStruct00={4:0}, isInitial=1] [L78] CALL assume_abort_if_not(WrapperStruct00.var_1_2 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(WrapperStruct00.var_1_2 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L79] EXPR WrapperStruct00.var_1_2 VAL [WrapperStruct00={4:0}, isInitial=1] [L79] CALL assume_abort_if_not(WrapperStruct00.var_1_2 <= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(WrapperStruct00.var_1_2 <= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L80] WrapperStruct00.var_1_3 = __VERIFIER_nondet_short() [L81] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1] [L81] CALL assume_abort_if_not(WrapperStruct00.var_1_3 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(WrapperStruct00.var_1_3 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L82] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1] [L82] CALL assume_abort_if_not(WrapperStruct00.var_1_3 <= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(WrapperStruct00.var_1_3 <= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L83] WrapperStruct00.var_1_4 = __VERIFIER_nondet_short() [L84] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L84] CALL assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L85] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L85] CALL assume_abort_if_not(WrapperStruct00.var_1_4 <= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(WrapperStruct00.var_1_4 <= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L86] WrapperStruct00.var_1_5 = __VERIFIER_nondet_short() [L87] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L87] CALL assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L88] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L88] CALL assume_abort_if_not(WrapperStruct00.var_1_5 <= 16383) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(WrapperStruct00.var_1_5 <= 16383) VAL [WrapperStruct00={4:0}, isInitial=1] [L89] WrapperStruct00.var_1_7 = __VERIFIER_nondet_float() [L90] EXPR WrapperStruct00.var_1_7 [L90] EXPR WrapperStruct00.var_1_7 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_7 <= -1.0e-20F [L90] EXPR WrapperStruct00.var_1_7 [L90] EXPR WrapperStruct00.var_1_7 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_7 <= -1.0e-20F [L90] EXPR (WrapperStruct00.var_1_7 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_7 <= -1.0e-20F) || (WrapperStruct00.var_1_7 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_7 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L90] CALL assume_abort_if_not((WrapperStruct00.var_1_7 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_7 <= -1.0e-20F) || (WrapperStruct00.var_1_7 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_7 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not((WrapperStruct00.var_1_7 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_7 <= -1.0e-20F) || (WrapperStruct00.var_1_7 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_7 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] WrapperStruct00.var_1_8 = __VERIFIER_nondet_float() [L92] EXPR WrapperStruct00.var_1_8 [L92] EXPR WrapperStruct00.var_1_8 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F [L92] EXPR WrapperStruct00.var_1_8 [L92] EXPR WrapperStruct00.var_1_8 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F [L92] EXPR (WrapperStruct00.var_1_8 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L92] CALL assume_abort_if_not((WrapperStruct00.var_1_8 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not((WrapperStruct00.var_1_8 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L93] WrapperStruct00.var_1_9 = __VERIFIER_nondet_float() [L94] EXPR WrapperStruct00.var_1_9 [L94] EXPR WrapperStruct00.var_1_9 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_9 <= -1.0e-20F [L94] EXPR WrapperStruct00.var_1_9 [L94] EXPR WrapperStruct00.var_1_9 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_9 <= -1.0e-20F [L94] EXPR (WrapperStruct00.var_1_9 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_9 <= -1.0e-20F) || (WrapperStruct00.var_1_9 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_9 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L94] CALL assume_abort_if_not((WrapperStruct00.var_1_9 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_9 <= -1.0e-20F) || (WrapperStruct00.var_1_9 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_9 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not((WrapperStruct00.var_1_9 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_9 <= -1.0e-20F) || (WrapperStruct00.var_1_9 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_9 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L95] WrapperStruct00.var_1_11 = __VERIFIER_nondet_uchar() [L96] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L96] CALL assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L97] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L97] CALL assume_abort_if_not(WrapperStruct00.var_1_11 <= 255) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(WrapperStruct00.var_1_11 <= 255) VAL [WrapperStruct00={4:0}, isInitial=1] [L98] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L98] CALL assume_abort_if_not(WrapperStruct00.var_1_11 != 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(WrapperStruct00.var_1_11 != 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L99] WrapperStruct00.var_1_12 = __VERIFIER_nondet_long() [L100] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L100] CALL assume_abort_if_not(WrapperStruct00.var_1_12 >= 1073741823) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(WrapperStruct00.var_1_12 >= 1073741823) VAL [WrapperStruct00={4:0}, isInitial=1] [L101] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L101] CALL assume_abort_if_not(WrapperStruct00.var_1_12 <= 2147483647) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(WrapperStruct00.var_1_12 <= 2147483647) VAL [WrapperStruct00={4:0}, isInitial=1] [L114] RET updateVariables() [L115] CALL step() [L54] EXPR WrapperStruct00.var_1_2 [L54] EXPR WrapperStruct00.var_1_3 [L54] EXPR WrapperStruct00.var_1_4 [L54] EXPR WrapperStruct00.var_1_5 [L54] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5) [L54] EXPR WrapperStruct00.var_1_4 [L54] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5) [L54] WrapperStruct00.var_1_1 = ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))) [L55] EXPR WrapperStruct00.var_1_2 [L55] EXPR WrapperStruct00.var_1_1 [L55] COND TRUE WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1 [L56] EXPR WrapperStruct00.var_1_7 [L56] EXPR WrapperStruct00.var_1_8 [L56] EXPR ((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) [L56] EXPR WrapperStruct00.var_1_7 [L56] EXPR WrapperStruct00.var_1_8 [L56] EXPR ((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) [L56] EXPR WrapperStruct00.var_1_9 [L56] COND TRUE ((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9 [L57] EXPR WrapperStruct00.var_1_3 [L57] WrapperStruct00.var_1_6 = WrapperStruct00.var_1_3 [L64] EXPR WrapperStruct00.var_1_6 [L64] EXPR WrapperStruct00.var_1_4 [L64] EXPR WrapperStruct00.var_1_2 [L64] EXPR WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2 [L64] signed long int stepLocal_1 = WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2); [L65] EXPR WrapperStruct00.var_1_2 [L65] EXPR WrapperStruct00.var_1_12 [L65] EXPR WrapperStruct00.var_1_5 [L65] signed long int stepLocal_0 = WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5); [L66] EXPR WrapperStruct00.var_1_5 [L66] COND FALSE !(stepLocal_1 != WrapperStruct00.var_1_5) [L73] EXPR WrapperStruct00.var_1_2 [L73] WrapperStruct00.var_1_10 = WrapperStruct00.var_1_2 [L115] RET step() [L116] CALL, EXPR property() [L106] EXPR WrapperStruct00.var_1_1 [L106] EXPR WrapperStruct00.var_1_2 [L106] EXPR WrapperStruct00.var_1_3 [L106] EXPR WrapperStruct00.var_1_4 [L106] EXPR WrapperStruct00.var_1_5 [L106] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5) [L106] EXPR WrapperStruct00.var_1_4 [L106] EXPR ((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5) [L106] EXPR (WrapperStruct00.var_1_1 == ((signed short int) ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))))) && ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4))) [L106] EXPR WrapperStruct00.var_1_2 [L106] EXPR WrapperStruct00.var_1_1 [L106] EXPR (WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4)) [L106] EXPR WrapperStruct00.var_1_7 [L106] EXPR WrapperStruct00.var_1_8 [L106] EXPR ((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) [L106] EXPR WrapperStruct00.var_1_7 [L106] EXPR WrapperStruct00.var_1_8 [L106] EXPR ((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) [L106] EXPR WrapperStruct00.var_1_9 [L106] EXPR (((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1)) [L106] EXPR WrapperStruct00.var_1_6 [L106] EXPR WrapperStruct00.var_1_3 [L106] EXPR (((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1)) [L106] EXPR (WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4)) [L106] EXPR (WrapperStruct00.var_1_1 == ((signed short int) ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))))) && ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4))) [L106] EXPR ((WrapperStruct00.var_1_1 == ((signed short int) ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))))) && ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4)))) && (((WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2)) != WrapperStruct00.var_1_5) ? (((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_2))) [L106] EXPR WrapperStruct00.var_1_6 [L106] EXPR WrapperStruct00.var_1_4 [L106] EXPR WrapperStruct00.var_1_2 [L106] EXPR WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2 [L106] EXPR WrapperStruct00.var_1_5 [L106] EXPR ((WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2)) != WrapperStruct00.var_1_5) ? (((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_2)) [L106] EXPR WrapperStruct00.var_1_3 [L106] EXPR WrapperStruct00.var_1_11 [L106] EXPR WrapperStruct00.var_1_2 [L106] EXPR WrapperStruct00.var_1_12 [L106] EXPR WrapperStruct00.var_1_5 [L106] EXPR ((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4)) [L106] EXPR WrapperStruct00.var_1_10 [L106] EXPR WrapperStruct00.var_1_4 [L106] EXPR ((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4)) [L106] EXPR ((WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2)) != WrapperStruct00.var_1_5) ? (((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_2)) [L106] EXPR ((WrapperStruct00.var_1_1 == ((signed short int) ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))))) && ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4)))) && (((WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2)) != WrapperStruct00.var_1_5) ? (((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_2))) [L106-L107] return ((WrapperStruct00.var_1_1 == ((signed short int) ((((((16) > (4)) ? (16) : (4))) + WrapperStruct00.var_1_2) - (WrapperStruct00.var_1_3 + ((((WrapperStruct00.var_1_4) < (WrapperStruct00.var_1_5)) ? (WrapperStruct00.var_1_4) : (WrapperStruct00.var_1_5))))))) && ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_1) ? ((((((WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) < 0 ) ? -(WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8) : (WrapperStruct00.var_1_7 + WrapperStruct00.var_1_8))) < WrapperStruct00.var_1_9) ? (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_3)) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_1))) : (WrapperStruct00.var_1_6 == ((signed long int) WrapperStruct00.var_1_4)))) && (((WrapperStruct00.var_1_6 + (WrapperStruct00.var_1_4 << WrapperStruct00.var_1_2)) != WrapperStruct00.var_1_5) ? (((WrapperStruct00.var_1_3 / WrapperStruct00.var_1_11) < (WrapperStruct00.var_1_2 - (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_5))) ? (WrapperStruct00.var_1_10 == ((signed long int) ((((-256) < (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2)))))))) ? (-256) : (((((WrapperStruct00.var_1_4) < (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_2)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_2))))))))))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_4))) : (WrapperStruct00.var_1_10 == ((signed long int) WrapperStruct00.var_1_2))) ; [L116] RET, EXPR property() [L116] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, \old(cond)=0, cond=0, isInitial=1] [L19] reach_error() VAL [WrapperStruct00={4:0}, \old(cond)=0, cond=0, isInitial=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 16, 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=41occurred 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: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 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 16:34:48,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:50,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:50,787 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:34:50,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:50,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:50,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:50,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:50,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:50,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:50,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:50,826 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:50,827 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:50,827 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:50,828 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:50,828 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:50,829 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:50,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:50,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:50,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:34:50,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:34:50,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:50,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:50,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:50,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:50,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:34:50,834 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:34:50,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:34:50,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:34:50,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:50,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:50,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:50,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:34:50,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:34:50,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:50,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:50,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:50,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:50,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:50,838 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:34:50,839 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:34:50,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:50,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:50,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:50,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:50,840 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c93cc267f3fa9111282ae2218d996ece9eec8d2b16bef9815b7e16fff94a7e6 [2023-12-02 16:34:51,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:51,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:51,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:51,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:51,187 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:51,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:53,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:34:54,140 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:34:54,140 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:54,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/30403cc1f/ab8c72da3f324f08b93c8ee626f6eab8/FLAG378c6271d [2023-12-02 16:34:54,165 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/data/30403cc1f/ab8c72da3f324f08b93c8ee626f6eab8 [2023-12-02 16:34:54,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:34:54,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:34:54,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:54,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:34:54,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:34:54,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edc1c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54, skipping insertion in model container [2023-12-02 16:34:54,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:34:54,365 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2023-12-02 16:34:54,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:54,439 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:34:54,452 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_1ecb84b6-4f21-4792-af0b-19159dd129d3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-39.i[916,929] [2023-12-02 16:34:54,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:54,520 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:34:54,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54 WrapperNode [2023-12-02 16:34:54,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:54,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:54,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:34:54,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:34:54,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,608 INFO L138 Inliner]: procedures = 36, calls = 188, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 509 [2023-12-02 16:34:54,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:54,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:34:54,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:34:54,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:34:54,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:34:54,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:34:54,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:34:54,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:34:54,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (1/1) ... [2023-12-02 16:34:54,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:54,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:34:54,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:34:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 16:34:54,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:34:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-12-02 16:34:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 16:34:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 16:34:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:34:54,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:34:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:34:54,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:34:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 16:34:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-12-02 16:34:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:34:54,900 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:34:54,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:34:56,114 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:34:56,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:34:56,156 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:34:56,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:56 BoogieIcfgContainer [2023-12-02 16:34:56,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:34:56,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:34:56,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:34:56,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:34:56,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:34:54" (1/3) ... [2023-12-02 16:34:56,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbcd376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:56, skipping insertion in model container [2023-12-02 16:34:56,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:54" (2/3) ... [2023-12-02 16:34:56,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbcd376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:56, skipping insertion in model container [2023-12-02 16:34:56,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:56" (3/3) ... [2023-12-02 16:34:56,181 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-39.i [2023-12-02 16:34:56,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:34:56,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:34:56,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:34:56,249 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;@5d17cef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:34:56,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:34:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:34:56,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:56,266 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:56,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:56,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash -739854565, now seen corresponding path program 1 times [2023-12-02 16:34:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452891246] [2023-12-02 16:34:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:56,284 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 16:34:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:56,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:56,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:56,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:34:56,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-02 16:34:56,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:34:56,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452891246] [2023-12-02 16:34:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452891246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:56,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:56,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:34:56,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159847137] [2023-12-02 16:34:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:34:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:34:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:34:56,700 INFO L87 Difference]: Start difference. First operand has 107 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 89 states have internal predecessors, (130), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:34:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:56,753 INFO L93 Difference]: Finished difference Result 211 states and 338 transitions. [2023-12-02 16:34:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:34:56,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2023-12-02 16:34:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:56,764 INFO L225 Difference]: With dead ends: 211 [2023-12-02 16:34:56,764 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 16:34:56,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 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 16:34:56,772 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:56,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:34:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 16:34:56,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-02 16:34:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 87 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:34:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 157 transitions. [2023-12-02 16:34:56,815 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 157 transitions. Word has length 121 [2023-12-02 16:34:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 157 transitions. [2023-12-02 16:34:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:34:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 157 transitions. [2023-12-02 16:34:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:34:56,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:56,819 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:56,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:57,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:57,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:57,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 758076255, now seen corresponding path program 1 times [2023-12-02 16:34:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:34:57,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744987669] [2023-12-02 16:34:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:57,022 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 16:34:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:34:57,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:57,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:34:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:57,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-02 16:34:57,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:57,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:34:58,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-02 16:34:59,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2023-12-02 16:35:01,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 70 [2023-12-02 16:35:04,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:04,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 83 [2023-12-02 16:35:04,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:04,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 83 [2023-12-02 16:35:05,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:05,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 83 [2023-12-02 16:35:06,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:06,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 93 [2023-12-02 16:35:07,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:07,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 86 [2023-12-02 16:35:09,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 109 [2023-12-02 16:35:09,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:09,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 132 [2023-12-02 16:35:10,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:10,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 209 treesize of output 157 [2023-12-02 16:35:11,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:11,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 100 [2023-12-02 16:35:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:35:12,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:35:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:35:14,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:35:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744987669] [2023-12-02 16:35:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744987669] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:35:14,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:35:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [46] total 53 [2023-12-02 16:35:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813928952] [2023-12-02 16:35:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:35:14,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:35:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:35:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:35:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=2258, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 16:35:14,026 INFO L87 Difference]: Start difference. First operand 105 states and 157 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:35:19,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:35:23,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:35:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:35:29,399 INFO L93 Difference]: Finished difference Result 355 states and 530 transitions. [2023-12-02 16:35:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:35:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-02 16:35:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:35:29,404 INFO L225 Difference]: With dead ends: 355 [2023-12-02 16:35:29,405 INFO L226 Difference]: Without dead ends: 251 [2023-12-02 16:35:29,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=567, Invalid=2855, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 16:35:29,409 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 318 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:35:29,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 776 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 932 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 16:35:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-02 16:35:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 151. [2023-12-02 16:35:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.4296875) internal successors, (183), 129 states have internal predecessors, (183), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:35:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2023-12-02 16:35:29,434 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 223 transitions. Word has length 121 [2023-12-02 16:35:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:35:29,435 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 223 transitions. [2023-12-02 16:35:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:35:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 223 transitions. [2023-12-02 16:35:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:35:29,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:29,439 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:29,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:35:29,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:35:29,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:35:29,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1567422881, now seen corresponding path program 1 times [2023-12-02 16:35:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:35:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534776020] [2023-12-02 16:35:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:29,642 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 16:35:29,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:35:29,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:35:29,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:35:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:30,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-02 16:35:30,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:35:30,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:35:30,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:35:30,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 49 [2023-12-02 16:35:32,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 72 [2023-12-02 16:35:34,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:34,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:35:35,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:35,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:35:35,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:35,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:35:36,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:36,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2023-12-02 16:35:37,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:37,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 78 [2023-12-02 16:35:39,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 106 [2023-12-02 16:35:39,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:39,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 128 [2023-12-02 16:35:41,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:41,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 247 treesize of output 159 [2023-12-02 16:35:43,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:35:43,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 206 treesize of output 102 [2023-12-02 16:35:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:35:44,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:35:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:35:48,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:35:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534776020] [2023-12-02 16:35:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534776020] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:35:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:35:48,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [46] total 54 [2023-12-02 16:35:48,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400735574] [2023-12-02 16:35:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:35:48,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:35:48,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:35:48,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:35:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=2435, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 16:35:48,575 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:35:52,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:35:55,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:35:58,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:02,272 INFO L93 Difference]: Finished difference Result 349 states and 515 transitions. [2023-12-02 16:36:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:36:02,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-02 16:36:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:02,278 INFO L225 Difference]: With dead ends: 349 [2023-12-02 16:36:02,278 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 16:36:02,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=485, Invalid=3175, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 16:36:02,282 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 343 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:02,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 900 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 829 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 16:36:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 16:36:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 151. [2023-12-02 16:36:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.421875) internal successors, (182), 129 states have internal predecessors, (182), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:36:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 222 transitions. [2023-12-02 16:36:02,300 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 222 transitions. Word has length 121 [2023-12-02 16:36:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:02,301 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 222 transitions. [2023-12-02 16:36:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:36:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 222 transitions. [2023-12-02 16:36:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:36:02,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:02,304 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:02,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:02,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:36:02,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash -253040995, now seen corresponding path program 1 times [2023-12-02 16:36:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:36:02,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939943941] [2023-12-02 16:36:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:02,513 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 16:36:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:36:02,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:02,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:02,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 16:36:02,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:02,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:36:03,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2023-12-02 16:36:03,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:03,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 53 [2023-12-02 16:36:04,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 56 [2023-12-02 16:36:05,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:05,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:06,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:06,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:06,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:06,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:06,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:06,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2023-12-02 16:36:07,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:07,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 78 [2023-12-02 16:36:08,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 99 [2023-12-02 16:36:09,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:09,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 148 treesize of output 122 [2023-12-02 16:36:09,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:09,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 181 treesize of output 141 [2023-12-02 16:36:10,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:10,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 201 treesize of output 97 [2023-12-02 16:36:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 168 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 16:36:11,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:36:13,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:36:13,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939943941] [2023-12-02 16:36:13,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939943941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:13,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:36:13,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [36] total 42 [2023-12-02 16:36:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852449753] [2023-12-02 16:36:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:36:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:36:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:36:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 16:36:13,626 INFO L87 Difference]: Start difference. First operand 151 states and 222 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:36:16,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:22,631 INFO L93 Difference]: Finished difference Result 374 states and 554 transitions. [2023-12-02 16:36:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:36:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-02 16:36:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:22,635 INFO L225 Difference]: With dead ends: 374 [2023-12-02 16:36:22,635 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 16:36:22,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=310, Invalid=1852, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 16:36:22,637 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 254 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 726 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:36:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 16:36:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 169. [2023-12-02 16:36:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 147 states have internal predecessors, (210), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:36:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 250 transitions. [2023-12-02 16:36:22,648 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 250 transitions. Word has length 121 [2023-12-02 16:36:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 250 transitions. [2023-12-02 16:36:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:36:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 250 transitions. [2023-12-02 16:36:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:36:22,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:22,650 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:22,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:22,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:36:22,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 556305631, now seen corresponding path program 1 times [2023-12-02 16:36:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:36:22,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924830643] [2023-12-02 16:36:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:22,852 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 16:36:22,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:36:22,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:22,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:23,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-02 16:36:23,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:23,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:36:23,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:36:24,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:36:25,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 76 [2023-12-02 16:36:28,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:28,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:28,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:28,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:29,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:29,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 75 [2023-12-02 16:36:29,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:29,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 85 [2023-12-02 16:36:31,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:31,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 88 [2023-12-02 16:36:34,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 107 [2023-12-02 16:36:35,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:35,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 152 treesize of output 126 [2023-12-02 16:36:39,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:39,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 199 treesize of output 143 [2023-12-02 16:36:40,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:40,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 202 treesize of output 92 [2023-12-02 16:36:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:36:41,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:36:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:36:43,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:36:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924830643] [2023-12-02 16:36:43,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924830643] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:36:43,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:36:43,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [44] total 51 [2023-12-02 16:36:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318328739] [2023-12-02 16:36:43,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:43,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:36:43,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:36:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:36:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2127, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 16:36:43,617 INFO L87 Difference]: Start difference. First operand 169 states and 250 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:36:49,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:53,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:57,846 INFO L93 Difference]: Finished difference Result 464 states and 684 transitions. [2023-12-02 16:36:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:36:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-12-02 16:36:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:36:57,849 INFO L225 Difference]: With dead ends: 464 [2023-12-02 16:36:57,849 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 16:36:57,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=492, Invalid=2700, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 16:36:57,851 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 267 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:36:57,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 885 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 908 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2023-12-02 16:36:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 16:36:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 171. [2023-12-02 16:36:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 148 states have (on average 1.4324324324324325) internal successors, (212), 149 states have internal predecessors, (212), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:36:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 252 transitions. [2023-12-02 16:36:57,861 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 252 transitions. Word has length 121 [2023-12-02 16:36:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:57,862 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 252 transitions. [2023-12-02 16:36:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:36:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 252 transitions. [2023-12-02 16:36:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 16:36:57,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:57,863 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:57,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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)] Ended with exit code 0 [2023-12-02 16:36:58,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:58,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:36:58,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 796737527, now seen corresponding path program 1 times [2023-12-02 16:36:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:36:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973381409] [2023-12-02 16:36:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:58,065 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 16:36:58,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:36:58,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:36:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:58,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 16:36:58,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:36:58,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:36:58,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-02 16:36:59,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:59,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-02 16:36:59,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:36:59,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-02 16:37:00,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:00,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-02 16:37:00,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:00,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 47 [2023-12-02 16:37:00,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:00,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-02 16:37:01,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:01,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 64 [2023-12-02 16:37:01,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:01,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 79 [2023-12-02 16:37:02,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:02,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 75 [2023-12-02 16:37:02,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:02,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 40 [2023-12-02 16:37:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 308 proven. 96 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-02 16:37:02,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:37:02,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:37:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973381409] [2023-12-02 16:37:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973381409] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:37:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-12-02 16:37:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194256346] [2023-12-02 16:37:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:02,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:37:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:37:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:37:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:37:02,833 INFO L87 Difference]: Start difference. First operand 171 states and 252 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:06,005 INFO L93 Difference]: Finished difference Result 469 states and 691 transitions. [2023-12-02 16:37:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:37:06,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-02 16:37:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:06,008 INFO L225 Difference]: With dead ends: 469 [2023-12-02 16:37:06,008 INFO L226 Difference]: Without dead ends: 299 [2023-12-02 16:37:06,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2023-12-02 16:37:06,010 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 161 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:06,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 357 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 16:37:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-02 16:37:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 192. [2023-12-02 16:37:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 169 states have (on average 1.4497041420118344) internal successors, (245), 170 states have internal predecessors, (245), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:37:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 285 transitions. [2023-12-02 16:37:06,019 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 285 transitions. Word has length 122 [2023-12-02 16:37:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:06,020 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 285 transitions. [2023-12-02 16:37:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 285 transitions. [2023-12-02 16:37:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 16:37:06,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:06,021 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:06,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:06,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:37:06,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1606084153, now seen corresponding path program 1 times [2023-12-02 16:37:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:37:06,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472176185] [2023-12-02 16:37:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:06,223 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 16:37:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:37:06,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:06,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:06,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 16:37:06,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:06,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:37:06,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:37:07,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 49 [2023-12-02 16:37:08,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:08,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:09,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:09,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:09,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:09,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:09,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:09,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:09,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:09,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:10,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:10,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 62 [2023-12-02 16:37:11,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 83 [2023-12-02 16:37:11,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:11,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 105 [2023-12-02 16:37:12,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:12,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 170 treesize of output 108 [2023-12-02 16:37:13,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:13,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 82 [2023-12-02 16:37:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 120 proven. 180 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-02 16:37:13,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:37:15,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:37:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472176185] [2023-12-02 16:37:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472176185] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:37:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [34] total 40 [2023-12-02 16:37:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040217382] [2023-12-02 16:37:15,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:37:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:37:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:37:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 16:37:15,365 INFO L87 Difference]: Start difference. First operand 192 states and 285 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:21,709 INFO L93 Difference]: Finished difference Result 430 states and 638 transitions. [2023-12-02 16:37:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:37:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-02 16:37:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:21,712 INFO L225 Difference]: With dead ends: 430 [2023-12-02 16:37:21,712 INFO L226 Difference]: Without dead ends: 239 [2023-12-02 16:37:21,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 16:37:21,713 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 159 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:21,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 768 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-02 16:37:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-02 16:37:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 204. [2023-12-02 16:37:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 181 states have (on average 1.4640883977900552) internal successors, (265), 182 states have internal predecessors, (265), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:37:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 305 transitions. [2023-12-02 16:37:21,721 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 305 transitions. Word has length 122 [2023-12-02 16:37:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 305 transitions. [2023-12-02 16:37:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 305 transitions. [2023-12-02 16:37:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 16:37:21,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:21,722 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:21,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:21,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:37:21,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash 326220475, now seen corresponding path program 1 times [2023-12-02 16:37:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:37:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362925382] [2023-12-02 16:37:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:21,924 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 16:37:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:37:21,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:21,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:22,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 16:37:22,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:22,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:37:22,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2023-12-02 16:37:23,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2023-12-02 16:37:25,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 66 [2023-12-02 16:37:27,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:27,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:37:28,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:28,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:37:28,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:28,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:37:29,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:29,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:37:30,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:30,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:37:32,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 93 [2023-12-02 16:37:32,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:32,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 157 treesize of output 116 [2023-12-02 16:37:33,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:33,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 162 treesize of output 121 [2023-12-02 16:37:34,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:34,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 163 treesize of output 77 [2023-12-02 16:37:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 176 proven. 192 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:37:34,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:37:35,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:37:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362925382] [2023-12-02 16:37:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362925382] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:35,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:37:35,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [42] total 47 [2023-12-02 16:37:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636148171] [2023-12-02 16:37:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:35,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:37:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:37:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:37:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 16:37:35,759 INFO L87 Difference]: Start difference. First operand 204 states and 305 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:39,616 INFO L93 Difference]: Finished difference Result 514 states and 763 transitions. [2023-12-02 16:37:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:37:39,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-12-02 16:37:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:39,619 INFO L225 Difference]: With dead ends: 514 [2023-12-02 16:37:39,619 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 16:37:39,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=405, Invalid=1947, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 16:37:39,621 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 156 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 683 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 16:37:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 16:37:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 200. [2023-12-02 16:37:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 177 states have (on average 1.4689265536723164) internal successors, (260), 178 states have internal predecessors, (260), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:37:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 300 transitions. [2023-12-02 16:37:39,629 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 300 transitions. Word has length 122 [2023-12-02 16:37:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 300 transitions. [2023-12-02 16:37:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:37:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 300 transitions. [2023-12-02 16:37:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 16:37:39,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:39,630 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:39,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:39,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:39,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:37:39,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1492462698, now seen corresponding path program 1 times [2023-12-02 16:37:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:37:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795733347] [2023-12-02 16:37:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:39,832 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 16:37:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:37:39,833 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:39,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:37:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:40,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:37:40,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:40,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:37:40,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:37:40,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2023-12-02 16:37:40,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:40,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2023-12-02 16:37:40,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:37:40,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 48 [2023-12-02 16:37:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-02 16:37:40,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:37:40,769 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:37:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795733347] [2023-12-02 16:37:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795733347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:40,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:37:40,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 16:37:40,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566238132] [2023-12-02 16:37:40,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:37:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:37:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:37:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:37:40,771 INFO L87 Difference]: Start difference. First operand 200 states and 300 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:37:42,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:45,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:49,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:51,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:53,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:55,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:57,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:00,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:02,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:06,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:08,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:10,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:13,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:15,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:15,174 INFO L93 Difference]: Finished difference Result 496 states and 733 transitions. [2023-12-02 16:38:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:38:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2023-12-02 16:38:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:15,178 INFO L225 Difference]: With dead ends: 496 [2023-12-02 16:38:15,178 INFO L226 Difference]: Without dead ends: 297 [2023-12-02 16:38:15,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-02 16:38:15,179 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 551 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 22 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 382 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 534 Invalid, 14 Unknown, 0 Unchecked, 34.0s Time] [2023-12-02 16:38:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-02 16:38:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 243. [2023-12-02 16:38:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 217 states have (on average 1.4470046082949308) internal successors, (314), 219 states have internal predecessors, (314), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 16:38:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2023-12-02 16:38:15,194 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 123 [2023-12-02 16:38:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:15,194 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2023-12-02 16:38:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:38:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2023-12-02 16:38:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:38:15,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:15,196 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:15,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:15,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:15,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:15,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1301281326, now seen corresponding path program 1 times [2023-12-02 16:38:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:38:15,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199083894] [2023-12-02 16:38:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:15,397 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 16:38:15,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:38:15,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:15,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:15,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:38:15,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:15,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:15,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:15,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:15,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:15,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:15,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:38:15,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:38:15,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2023-12-02 16:38:16,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:16,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2023-12-02 16:38:16,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:16,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 57 [2023-12-02 16:38:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-02 16:38:16,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:16,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:38:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199083894] [2023-12-02 16:38:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199083894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:16,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:16,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 16:38:16,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239623246] [2023-12-02 16:38:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:16,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:38:16,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:38:16,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:38:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:38:16,277 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:38:18,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:21,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:24,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:26,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:30,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:32,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:38:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:32,807 INFO L93 Difference]: Finished difference Result 550 states and 812 transitions. [2023-12-02 16:38:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:38:32,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2023-12-02 16:38:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:32,810 INFO L225 Difference]: With dead ends: 550 [2023-12-02 16:38:32,810 INFO L226 Difference]: Without dead ends: 308 [2023-12-02 16:38:32,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:38:32,811 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 472 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:32,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 338 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 497 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2023-12-02 16:38:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-02 16:38:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 247. [2023-12-02 16:38:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 221 states have (on average 1.4434389140271493) internal successors, (319), 223 states have internal predecessors, (319), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 16:38:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 363 transitions. [2023-12-02 16:38:32,826 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 363 transitions. Word has length 124 [2023-12-02 16:38:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:32,827 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 363 transitions. [2023-12-02 16:38:32,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:38:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 363 transitions. [2023-12-02 16:38:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:38:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:32,828 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:32,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:33,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 973925359, now seen corresponding path program 1 times [2023-12-02 16:38:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:38:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819812161] [2023-12-02 16:38:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:33,030 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 16:38:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:38:33,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:33,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:38:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:33,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 16:38:33,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:33,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:38:33,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 16:38:34,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 67 [2023-12-02 16:38:35,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:35,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 100 [2023-12-02 16:38:36,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:36,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 100 [2023-12-02 16:38:37,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:37,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 117 [2023-12-02 16:38:40,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:40,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 280 treesize of output 114 [2023-12-02 16:38:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-02 16:38:42,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:42,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:38:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819812161] [2023-12-02 16:38:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819812161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:42,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:42,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-02 16:38:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935378840] [2023-12-02 16:38:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:42,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 16:38:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:38:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 16:38:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:38:42,835 INFO L87 Difference]: Start difference. First operand 247 states and 363 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 16:38:52,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:12,015 WARN L293 SmtUtils]: Spent 10.96s on a formula simplification. DAG size of input: 99 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:39:15,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:18,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:21,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:24,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:39,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:42,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:39:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:53,702 INFO L93 Difference]: Finished difference Result 1309 states and 1927 transitions. [2023-12-02 16:39:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 16:39:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2023-12-02 16:39:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:53,709 INFO L225 Difference]: With dead ends: 1309 [2023-12-02 16:39:53,709 INFO L226 Difference]: Without dead ends: 1063 [2023-12-02 16:39:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:39:53,710 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 651 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 87 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:53,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 999 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2682 Invalid, 7 Unknown, 0 Unchecked, 52.1s Time] [2023-12-02 16:39:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-02 16:39:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 950. [2023-12-02 16:39:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 852 states have (on average 1.442488262910798) internal successors, (1229), 863 states have internal predecessors, (1229), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 74 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 16:39:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1399 transitions. [2023-12-02 16:39:53,778 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1399 transitions. Word has length 124 [2023-12-02 16:39:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:53,779 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1399 transitions. [2023-12-02 16:39:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 16:39:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1399 transitions. [2023-12-02 16:39:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:39:53,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:53,781 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:53,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:39:53,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:39:53,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1232090797, now seen corresponding path program 1 times [2023-12-02 16:39:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:39:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223731891] [2023-12-02 16:39:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:53,983 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 16:39:53,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:39:53,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:39:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:39:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:54,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 16:39:54,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:39:54,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:39:54,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:39:55,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:39:57,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 66 [2023-12-02 16:39:59,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:39:59,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 85 [2023-12-02 16:40:00,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:00,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 85 [2023-12-02 16:40:01,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:01,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 85 [2023-12-02 16:40:01,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:01,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 95 [2023-12-02 16:40:03,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:03,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 98 [2023-12-02 16:40:05,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 119 [2023-12-02 16:40:06,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:06,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 194 treesize of output 140 [2023-12-02 16:40:14,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:14,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 209 treesize of output 143 [2023-12-02 16:40:18,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:40:18,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 218 treesize of output 94 [2023-12-02 16:40:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 16:40:19,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:40:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:40:33,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:40:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223731891] [2023-12-02 16:40:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223731891] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:40:33,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:40:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [46] total 55 [2023-12-02 16:40:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984968420] [2023-12-02 16:40:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:40:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:40:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:40:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:40:33,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2527, Unknown=4, NotChecked=0, Total=2970 [2023-12-02 16:40:33,468 INFO L87 Difference]: Start difference. First operand 950 states and 1399 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:40:38,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:40,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:42,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:44,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:47,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:49,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:52,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:56,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:40:58,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:41:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:41:00,968 INFO L93 Difference]: Finished difference Result 2086 states and 3079 transitions. [2023-12-02 16:41:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:41:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-02 16:41:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:41:00,977 INFO L225 Difference]: With dead ends: 2086 [2023-12-02 16:41:00,977 INFO L226 Difference]: Without dead ends: 1137 [2023-12-02 16:41:00,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 189 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=497, Invalid=3159, Unknown=4, NotChecked=0, Total=3660 [2023-12-02 16:41:00,985 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 264 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:41:00,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 969 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1010 Invalid, 7 Unknown, 0 Unchecked, 25.6s Time] [2023-12-02 16:41:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-02 16:41:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 974. [2023-12-02 16:41:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 876 states have (on average 1.4349315068493151) internal successors, (1257), 887 states have internal predecessors, (1257), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 74 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 16:41:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1427 transitions. [2023-12-02 16:41:01,059 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1427 transitions. Word has length 124 [2023-12-02 16:41:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:41:01,060 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1427 transitions. [2023-12-02 16:41:01,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:41:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1427 transitions. [2023-12-02 16:41:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:41:01,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:41:01,063 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:01,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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)] Ended with exit code 0 [2023-12-02 16:41:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:41:01,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:41:01,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:41:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash -37191891, now seen corresponding path program 1 times [2023-12-02 16:41:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:41:01,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397251184] [2023-12-02 16:41:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:41:01,265 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 16:41:01,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:41:01,266 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:41:01,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (14)] Waiting until timeout for monitored process [2023-12-02 16:41:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:41:01,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 16:41:01,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:41:01,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:41:01,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:41:02,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2023-12-02 16:41:04,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:04,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 56 [2023-12-02 16:41:04,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:04,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 56 [2023-12-02 16:41:05,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:05,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 56 [2023-12-02 16:41:05,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:05,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 56 [2023-12-02 16:41:06,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:06,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 66 [2023-12-02 16:41:07,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:07,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:41:08,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 80 [2023-12-02 16:41:09,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:09,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 125 treesize of output 102 [2023-12-02 16:41:09,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:09,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 163 treesize of output 120 [2023-12-02 16:41:12,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:12,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 85 [2023-12-02 16:41:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 220 proven. 180 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-02 16:41:12,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:41:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:41:16,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:41:16,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397251184] [2023-12-02 16:41:16,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397251184] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:41:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:41:16,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [37] total 43 [2023-12-02 16:41:16,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237226303] [2023-12-02 16:41:16,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:41:16,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:41:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:41:16,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:41:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1522, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 16:41:16,735 INFO L87 Difference]: Start difference. First operand 974 states and 1427 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:41:24,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:41:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:41:26,173 INFO L93 Difference]: Finished difference Result 2053 states and 3010 transitions. [2023-12-02 16:41:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:41:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-02 16:41:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:41:26,181 INFO L225 Difference]: With dead ends: 2053 [2023-12-02 16:41:26,181 INFO L226 Difference]: Without dead ends: 1080 [2023-12-02 16:41:26,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=311, Invalid=1851, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 16:41:26,184 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 152 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:41:26,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 854 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-02 16:41:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-02 16:41:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 950. [2023-12-02 16:41:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 852 states have (on average 1.437793427230047) internal successors, (1225), 863 states have internal predecessors, (1225), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 74 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 16:41:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1395 transitions. [2023-12-02 16:41:26,231 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1395 transitions. Word has length 124 [2023-12-02 16:41:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:41:26,232 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1395 transitions. [2023-12-02 16:41:26,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:41:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1395 transitions. [2023-12-02 16:41:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:41:26,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:41:26,234 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:26,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (14)] Ended with exit code 0 [2023-12-02 16:41:26,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:41:26,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:41:26,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:41:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1165603731, now seen corresponding path program 1 times [2023-12-02 16:41:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:41:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324310985] [2023-12-02 16:41:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:41:26,436 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 16:41:26,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:41:26,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:41:26,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (15)] Waiting until timeout for monitored process [2023-12-02 16:41:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:41:26,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 16:41:26,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:41:26,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:41:27,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:41:27,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 39 [2023-12-02 16:41:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 68 [2023-12-02 16:41:31,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:31,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 81 [2023-12-02 16:41:31,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:31,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 81 [2023-12-02 16:41:32,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:32,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 81 [2023-12-02 16:41:33,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:33,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 81 [2023-12-02 16:41:34,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:34,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 81 [2023-12-02 16:41:35,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 102 [2023-12-02 16:41:36,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:36,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 114 [2023-12-02 16:41:37,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:37,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 245 treesize of output 160 [2023-12-02 16:41:38,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:41:38,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 272 treesize of output 138 [2023-12-02 16:41:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 176 proven. 192 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-02 16:41:41,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:41:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:41:56,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:41:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324310985] [2023-12-02 16:41:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324310985] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:41:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:41:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [45] total 54 [2023-12-02 16:41:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109397618] [2023-12-02 16:41:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:41:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:41:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:41:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:41:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2449, Unknown=3, NotChecked=0, Total=2862 [2023-12-02 16:41:56,299 INFO L87 Difference]: Start difference. First operand 950 states and 1395 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:02,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:04,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:06,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:08,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:11,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:16,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:20,671 INFO L93 Difference]: Finished difference Result 2312 states and 3420 transitions. [2023-12-02 16:42:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:42:20,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-02 16:42:20,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:20,680 INFO L225 Difference]: With dead ends: 2312 [2023-12-02 16:42:20,680 INFO L226 Difference]: Without dead ends: 1363 [2023-12-02 16:42:20,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=486, Invalid=3293, Unknown=3, NotChecked=0, Total=3782 [2023-12-02 16:42:20,683 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 343 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:20,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1017 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1076 Invalid, 5 Unknown, 0 Unchecked, 21.3s Time] [2023-12-02 16:42:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2023-12-02 16:42:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 974. [2023-12-02 16:42:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 876 states have (on average 1.4349315068493151) internal successors, (1257), 887 states have internal predecessors, (1257), 85 states have call successors, (85), 12 states have call predecessors, (85), 12 states have return successors, (85), 74 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 16:42:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1427 transitions. [2023-12-02 16:42:20,738 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1427 transitions. Word has length 124 [2023-12-02 16:42:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:20,738 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1427 transitions. [2023-12-02 16:42:20,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1427 transitions. [2023-12-02 16:42:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:42:20,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:20,741 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:20,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (15)] Ended with exit code 0 [2023-12-02 16:42:20,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:20,941 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:42:20,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:20,942 INFO L85 PathProgramCache]: Analyzing trace with hash -356257105, now seen corresponding path program 1 times [2023-12-02 16:42:20,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954266618] [2023-12-02 16:42:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:20,943 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 16:42:20,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:20,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:20,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (16)] Waiting until timeout for monitored process [2023-12-02 16:42:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:21,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 16:42:21,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:21,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:42:21,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2023-12-02 16:42:22,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:22,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:42:22,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:22,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:42:23,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:23,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:42:23,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:23,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:42:23,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:42:24,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:24,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 58 [2023-12-02 16:42:24,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:24,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 61 [2023-12-02 16:42:24,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:24,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 61 [2023-12-02 16:42:25,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:25,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 44 [2023-12-02 16:42:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 248 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-02 16:42:25,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:42:25,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954266618] [2023-12-02 16:42:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954266618] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:42:25,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:42:25,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2023-12-02 16:42:25,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128820150] [2023-12-02 16:42:25,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:25,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:42:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:42:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:42:25,728 INFO L87 Difference]: Start difference. First operand 974 states and 1427 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:28,778 INFO L93 Difference]: Finished difference Result 2297 states and 3326 transitions. [2023-12-02 16:42:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:42:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-02 16:42:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:28,785 INFO L225 Difference]: With dead ends: 2297 [2023-12-02 16:42:28,785 INFO L226 Difference]: Without dead ends: 1324 [2023-12-02 16:42:28,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:42:28,787 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 120 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:28,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 476 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 16:42:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-12-02 16:42:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 830. [2023-12-02 16:42:28,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 748 states have (on average 1.4237967914438503) internal successors, (1065), 755 states have internal predecessors, (1065), 69 states have call successors, (69), 12 states have call predecessors, (69), 12 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:42:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1203 transitions. [2023-12-02 16:42:28,856 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1203 transitions. Word has length 124 [2023-12-02 16:42:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:28,857 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1203 transitions. [2023-12-02 16:42:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1203 transitions. [2023-12-02 16:42:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 16:42:28,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:28,860 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:28,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (16)] Ended with exit code 0 [2023-12-02 16:42:29,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:29,061 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:42:29,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:29,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1860080877, now seen corresponding path program 1 times [2023-12-02 16:42:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226054651] [2023-12-02 16:42:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:29,062 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 16:42:29,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:29,063 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:29,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (17)] Waiting until timeout for monitored process [2023-12-02 16:42:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:29,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 16:42:29,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:29,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:42:29,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:42:30,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:30,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 49 [2023-12-02 16:42:30,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2023-12-02 16:42:32,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:32,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 71 [2023-12-02 16:42:32,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:32,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 71 [2023-12-02 16:42:32,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:32,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 71 [2023-12-02 16:42:33,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:33,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 81 [2023-12-02 16:42:34,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:34,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 84 [2023-12-02 16:42:35,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 105 [2023-12-02 16:42:36,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:36,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 164 treesize of output 126 [2023-12-02 16:42:36,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:36,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 207 treesize of output 143 [2023-12-02 16:42:37,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:37,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 227 treesize of output 99 [2023-12-02 16:42:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 168 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 16:42:38,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:42:40,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:40,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226054651] [2023-12-02 16:42:40,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226054651] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:42:40,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:42:40,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [36] total 42 [2023-12-02 16:42:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116773343] [2023-12-02 16:42:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:40,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:42:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:42:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 16:42:40,675 INFO L87 Difference]: Start difference. First operand 830 states and 1203 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:44,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:46,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:52,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:53,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:42:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:55,798 INFO L93 Difference]: Finished difference Result 1777 states and 2578 transitions. [2023-12-02 16:42:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:42:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-12-02 16:42:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:55,805 INFO L225 Difference]: With dead ends: 1777 [2023-12-02 16:42:55,805 INFO L226 Difference]: Without dead ends: 948 [2023-12-02 16:42:55,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=283, Invalid=1787, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 16:42:55,808 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 217 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:55,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 798 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-02 16:42:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-02 16:42:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 806. [2023-12-02 16:42:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 724 states have (on average 1.4267955801104972) internal successors, (1033), 731 states have internal predecessors, (1033), 69 states have call successors, (69), 12 states have call predecessors, (69), 12 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:42:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1171 transitions. [2023-12-02 16:42:55,873 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1171 transitions. Word has length 124 [2023-12-02 16:42:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:55,874 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1171 transitions. [2023-12-02 16:42:55,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:42:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1171 transitions. [2023-12-02 16:42:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 16:42:55,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:55,877 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:55,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (17)] Ended with exit code 0 [2023-12-02 16:42:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:56,077 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:42:56,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1568207566, now seen corresponding path program 1 times [2023-12-02 16:42:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:56,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707451237] [2023-12-02 16:42:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:56,079 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 16:42:56,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:56,079 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:42:56,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (18)] Waiting until timeout for monitored process [2023-12-02 16:42:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:56,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 16:42:56,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:56,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:42:56,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:42:56,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:42:56,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 16:42:56,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:56,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-02 16:42:56,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:56,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-02 16:42:56,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:56,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-02 16:42:56,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:56,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-02 16:42:57,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:57,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-02 16:42:57,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:57,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2023-12-02 16:42:57,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:57,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2023-12-02 16:42:57,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:57,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 90 [2023-12-02 16:42:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-02 16:42:57,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:57,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707451237] [2023-12-02 16:42:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707451237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:57,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:57,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:42:57,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764669910] [2023-12-02 16:42:57,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:57,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:42:57,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:42:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:42:57,926 INFO L87 Difference]: Start difference. First operand 806 states and 1171 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 16:42:59,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:02,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:06,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:08,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:10,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:12,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:15,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:17,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:19,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:22,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:25,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:28,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:31,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:33,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:43:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:43:33,533 INFO L93 Difference]: Finished difference Result 1076 states and 1570 transitions. [2023-12-02 16:43:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:43:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2023-12-02 16:43:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:43:33,540 INFO L225 Difference]: With dead ends: 1076 [2023-12-02 16:43:33,540 INFO L226 Difference]: Without dead ends: 1074 [2023-12-02 16:43:33,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:43:33,541 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 342 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 18 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:43:33,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 462 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 790 Invalid, 13 Unknown, 0 Unchecked, 35.2s Time] [2023-12-02 16:43:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-12-02 16:43:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 818. [2023-12-02 16:43:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 736 states have (on average 1.419836956521739) internal successors, (1045), 743 states have internal predecessors, (1045), 69 states have call successors, (69), 12 states have call predecessors, (69), 12 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:43:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1183 transitions. [2023-12-02 16:43:33,619 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1183 transitions. Word has length 125 [2023-12-02 16:43:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:43:33,619 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1183 transitions. [2023-12-02 16:43:33,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 16:43:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1183 transitions. [2023-12-02 16:43:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 16:43:33,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:43:33,622 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:33,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (18)] Ended with exit code 0 [2023-12-02 16:43:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:33,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:43:33,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:43:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1134760502, now seen corresponding path program 1 times [2023-12-02 16:43:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:43:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739644088] [2023-12-02 16:43:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:33,824 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 16:43:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:43:33,825 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (19)] Waiting until timeout for monitored process [2023-12-02 16:43:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:34,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 16:43:34,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:34,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:43:34,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:43:34,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2023-12-02 16:43:35,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 66 [2023-12-02 16:43:37,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:37,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:43:38,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:38,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:43:38,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:38,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:43:39,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:39,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:43:40,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:40,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 69 [2023-12-02 16:43:40,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:40,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 86 [2023-12-02 16:43:41,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:41,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 90 [2023-12-02 16:43:42,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:42,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 144 treesize of output 107 [2023-12-02 16:43:44,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:44,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 164 treesize of output 70 [2023-12-02 16:43:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 208 proven. 156 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-02 16:43:44,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:43:45,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:43:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739644088] [2023-12-02 16:43:45,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739644088] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:43:45,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:43:45,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [34] total 37 [2023-12-02 16:43:45,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681559225] [2023-12-02 16:43:45,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:43:45,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:43:45,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:43:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:43:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1074, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:43:45,484 INFO L87 Difference]: Start difference. First operand 818 states and 1183 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:43:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:43:48,644 INFO L93 Difference]: Finished difference Result 1785 states and 2570 transitions. [2023-12-02 16:43:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:43:48,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-02 16:43:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:43:48,649 INFO L225 Difference]: With dead ends: 1785 [2023-12-02 16:43:48,649 INFO L226 Difference]: Without dead ends: 968 [2023-12-02 16:43:48,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=263, Invalid=1143, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:43:48,651 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 134 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:43:48,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 336 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 16:43:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-12-02 16:43:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 878. [2023-12-02 16:43:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 796 states have (on average 1.4082914572864322) internal successors, (1121), 803 states have internal predecessors, (1121), 69 states have call successors, (69), 12 states have call predecessors, (69), 12 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:43:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1259 transitions. [2023-12-02 16:43:48,707 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1259 transitions. Word has length 126 [2023-12-02 16:43:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:43:48,708 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1259 transitions. [2023-12-02 16:43:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:43:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1259 transitions. [2023-12-02 16:43:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 16:43:48,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:43:48,711 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:48,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (19)] Ended with exit code 0 [2023-12-02 16:43:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:48,912 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:43:48,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:43:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1624048222, now seen corresponding path program 1 times [2023-12-02 16:43:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:43:48,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519458019] [2023-12-02 16:43:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:48,913 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 16:43:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:43:48,914 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (20)] Waiting until timeout for monitored process [2023-12-02 16:43:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:49,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 16:43:49,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:49,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:43:49,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:43:49,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:49,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-02 16:43:50,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:50,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 56 [2023-12-02 16:43:50,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:50,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:43:50,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:50,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:43:50,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:50,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:43:51,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:51,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:43:51,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:51,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 59 [2023-12-02 16:43:51,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2023-12-02 16:43:52,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:52,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 86 [2023-12-02 16:43:52,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:52,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 86 [2023-12-02 16:43:52,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:43:52,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 105 treesize of output 51 [2023-12-02 16:43:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 208 proven. 84 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-02 16:43:53,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:43:53,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:43:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519458019] [2023-12-02 16:43:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519458019] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:43:53,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:43:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2023-12-02 16:43:53,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349085680] [2023-12-02 16:43:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:43:53,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:43:53,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:43:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:43:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:43:53,793 INFO L87 Difference]: Start difference. First operand 878 states and 1259 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:43:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:43:56,830 INFO L93 Difference]: Finished difference Result 1997 states and 2874 transitions. [2023-12-02 16:43:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:43:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2023-12-02 16:43:56,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:43:56,835 INFO L225 Difference]: With dead ends: 1997 [2023-12-02 16:43:56,835 INFO L226 Difference]: Without dead ends: 1120 [2023-12-02 16:43:56,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:43:56,837 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 96 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:43:56,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 493 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 16:43:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-02 16:43:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 878. [2023-12-02 16:43:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 796 states have (on average 1.3982412060301508) internal successors, (1113), 803 states have internal predecessors, (1113), 69 states have call successors, (69), 12 states have call predecessors, (69), 12 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:43:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1251 transitions. [2023-12-02 16:43:56,885 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1251 transitions. Word has length 126 [2023-12-02 16:43:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:43:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1251 transitions. [2023-12-02 16:43:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:43:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1251 transitions. [2023-12-02 16:43:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 16:43:56,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:43:56,888 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:56,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (20)] Ended with exit code 0 [2023-12-02 16:43:57,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:57,088 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:43:57,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:43:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash -48399314, now seen corresponding path program 1 times [2023-12-02 16:43:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:43:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593876854] [2023-12-02 16:43:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:57,089 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 16:43:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:43:57,091 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:43:57,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (21)] Waiting until timeout for monitored process [2023-12-02 16:43:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:57,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 16:43:57,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:57,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:43:58,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 16:43:58,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 67 [2023-12-02 16:44:00,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:00,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 110 [2023-12-02 16:44:01,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:01,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 113 [2023-12-02 16:44:02,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:02,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 130 [2023-12-02 16:44:03,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:03,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 153 [2023-12-02 16:44:03,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:03,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 244 treesize of output 156 [2023-12-02 16:44:07,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:44:07,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 307 treesize of output 123 [2023-12-02 16:44:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 16:44:10,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:44:10,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:44:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593876854] [2023-12-02 16:44:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593876854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:44:10,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:44:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-02 16:44:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258965247] [2023-12-02 16:44:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:44:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 16:44:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:44:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 16:44:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:44:10,145 INFO L87 Difference]: Start difference. First operand 878 states and 1251 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 16:44:20,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:23,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:25,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:27,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:32,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:34,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:44:56,122 WARN L293 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 115 DAG size of output: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:45:00,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:11,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:19,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:22,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:24,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:27,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:45:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:33,381 INFO L93 Difference]: Finished difference Result 1807 states and 2565 transitions. [2023-12-02 16:45:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:45:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 127 [2023-12-02 16:45:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:33,386 INFO L225 Difference]: With dead ends: 1807 [2023-12-02 16:45:33,386 INFO L226 Difference]: Without dead ends: 930 [2023-12-02 16:45:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2023-12-02 16:45:33,388 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1049 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 126 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 965 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2502 Invalid, 12 Unknown, 0 Unchecked, 63.6s Time] [2023-12-02 16:45:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2023-12-02 16:45:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 884. [2023-12-02 16:45:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 801 states have (on average 1.3957553058676655) internal successors, (1118), 808 states have internal predecessors, (1118), 69 states have call successors, (69), 13 states have call predecessors, (69), 13 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:45:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1256 transitions. [2023-12-02 16:45:33,474 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1256 transitions. Word has length 127 [2023-12-02 16:45:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:33,475 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1256 transitions. [2023-12-02 16:45:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 16:45:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1256 transitions. [2023-12-02 16:45:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 16:45:33,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:33,478 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:33,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (21)] Ended with exit code 0 [2023-12-02 16:45:33,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:45:33,687 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:33,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash -857745940, now seen corresponding path program 1 times [2023-12-02 16:45:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180676637] [2023-12-02 16:45:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:33,688 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 16:45:33,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:33,689 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:45:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (22)] Waiting until timeout for monitored process [2023-12-02 16:45:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:34,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 16:45:34,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:34,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:45:34,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:45:34,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:45:34,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:34,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:34,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:34,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:34,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:34,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:35,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:35,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:35,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:35,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:35,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:35,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:45:35,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-12-02 16:45:35,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:35,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 72 [2023-12-02 16:45:35,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:35,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 85 [2023-12-02 16:45:36,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:36,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 59 [2023-12-02 16:45:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 128 proven. 84 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-02 16:45:37,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:45:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:45:38,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180676637] [2023-12-02 16:45:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180676637] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:45:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:45:38,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-02 16:45:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193367077] [2023-12-02 16:45:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:38,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:45:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:45:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:45:38,047 INFO L87 Difference]: Start difference. First operand 884 states and 1256 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:45:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:40,476 INFO L93 Difference]: Finished difference Result 1815 states and 2582 transitions. [2023-12-02 16:45:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:45:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-02 16:45:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:40,481 INFO L225 Difference]: With dead ends: 1815 [2023-12-02 16:45:40,481 INFO L226 Difference]: Without dead ends: 932 [2023-12-02 16:45:40,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:45:40,482 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 82 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:40,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 373 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 16:45:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-02 16:45:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 854. [2023-12-02 16:45:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 771 states have (on average 1.3852140077821011) internal successors, (1068), 778 states have internal predecessors, (1068), 69 states have call successors, (69), 13 states have call predecessors, (69), 13 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:45:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1206 transitions. [2023-12-02 16:45:40,532 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1206 transitions. Word has length 127 [2023-12-02 16:45:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:40,532 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1206 transitions. [2023-12-02 16:45:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:45:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1206 transitions. [2023-12-02 16:45:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 16:45:40,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:40,534 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:40,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (22)] Forceful destruction successful, exit code 0 [2023-12-02 16:45:40,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:45:40,735 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:40,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1311258467, now seen corresponding path program 1 times [2023-12-02 16:45:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108519954] [2023-12-02 16:45:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:40,736 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 16:45:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:40,736 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:45:40,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (23)] Waiting until timeout for monitored process [2023-12-02 16:45:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:41,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 16:45:41,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:41,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:45:41,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 16:45:41,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 16:45:42,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 43 [2023-12-02 16:45:44,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:44,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 66 [2023-12-02 16:45:44,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:44,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 66 [2023-12-02 16:45:45,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:45,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 66 [2023-12-02 16:45:45,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:45,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 76 [2023-12-02 16:45:46,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:46,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 65 [2023-12-02 16:45:47,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:47,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 84 [2023-12-02 16:45:48,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:48,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 98 [2023-12-02 16:45:51,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:45:51,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 155 treesize of output 127 [2023-12-02 16:45:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 268 proven. 156 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 16:45:55,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:45:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:45:56,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108519954] [2023-12-02 16:45:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108519954] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:45:56,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:45:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [35] total 38 [2023-12-02 16:45:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532672000] [2023-12-02 16:45:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:45:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:45:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:45:56,972 INFO L87 Difference]: Start difference. First operand 854 states and 1206 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:46:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:00,056 INFO L93 Difference]: Finished difference Result 1669 states and 2340 transitions. [2023-12-02 16:46:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:46:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2023-12-02 16:46:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:00,061 INFO L225 Difference]: With dead ends: 1669 [2023-12-02 16:46:00,061 INFO L226 Difference]: Without dead ends: 816 [2023-12-02 16:46:00,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 16:46:00,063 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 20 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:00,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 417 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 16:46:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-02 16:46:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 790. [2023-12-02 16:46:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 707 states have (on average 1.3578500707213579) internal successors, (960), 714 states have internal predecessors, (960), 69 states have call successors, (69), 13 states have call predecessors, (69), 13 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:46:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1098 transitions. [2023-12-02 16:46:00,105 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1098 transitions. Word has length 127 [2023-12-02 16:46:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:00,105 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1098 transitions. [2023-12-02 16:46:00,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:46:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1098 transitions. [2023-12-02 16:46:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 16:46:00,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:00,107 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:00,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (23)] Ended with exit code 0 [2023-12-02 16:46:00,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:46:00,308 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:46:00,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1380457675, now seen corresponding path program 1 times [2023-12-02 16:46:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408900991] [2023-12-02 16:46:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:00,309 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 16:46:00,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:00,310 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:46:00,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (24)] Waiting until timeout for monitored process [2023-12-02 16:46:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:00,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 16:46:00,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:00,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:46:00,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:46:00,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:46:00,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:46:00,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:46:00,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 16:46:00,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-02 16:46:00,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2023-12-02 16:46:01,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:01,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2023-12-02 16:46:01,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:01,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 68 [2023-12-02 16:46:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-02 16:46:01,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:01,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408900991] [2023-12-02 16:46:01,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408900991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:01,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:01,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:46:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297101398] [2023-12-02 16:46:01,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:01,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:46:01,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:46:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:46:01,583 INFO L87 Difference]: Start difference. First operand 790 states and 1098 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:46:03,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:05,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:09,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:11,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:13,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:15,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:18,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:20,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:22,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:24,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:29,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:31,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:33,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:46:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:34,145 INFO L93 Difference]: Finished difference Result 1176 states and 1641 transitions. [2023-12-02 16:46:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:46:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2023-12-02 16:46:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:34,153 INFO L225 Difference]: With dead ends: 1176 [2023-12-02 16:46:34,153 INFO L226 Difference]: Without dead ends: 1174 [2023-12-02 16:46:34,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-02 16:46:34,154 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 318 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 20 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:34,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 465 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 782 Invalid, 11 Unknown, 0 Unchecked, 32.1s Time] [2023-12-02 16:46:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-12-02 16:46:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 854. [2023-12-02 16:46:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 771 states have (on average 1.3333333333333333) internal successors, (1028), 778 states have internal predecessors, (1028), 69 states have call successors, (69), 13 states have call predecessors, (69), 13 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:46:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1166 transitions. [2023-12-02 16:46:34,231 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1166 transitions. Word has length 128 [2023-12-02 16:46:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:34,231 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1166 transitions. [2023-12-02 16:46:34,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 16:46:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1166 transitions. [2023-12-02 16:46:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-02 16:46:34,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:34,233 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:34,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (24)] Ended with exit code 0 [2023-12-02 16:46:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:46:34,433 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:46:34,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -238436294, now seen corresponding path program 1 times [2023-12-02 16:46:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226346684] [2023-12-02 16:46:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:34,434 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 16:46:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:34,435 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:46:34,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (25)] Waiting until timeout for monitored process [2023-12-02 16:46:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:34,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 16:46:34,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:35,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 16:46:35,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 16:46:36,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 67 [2023-12-02 16:46:37,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:37,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 110 [2023-12-02 16:46:39,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:39,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 113 [2023-12-02 16:46:40,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:40,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 130 [2023-12-02 16:46:41,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:41,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 227 treesize of output 133 [2023-12-02 16:46:41,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:41,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 227 treesize of output 133 [2023-12-02 16:46:46,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:46:46,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 290 treesize of output 118 [2023-12-02 16:46:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 16:46:49,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:49,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:49,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226346684] [2023-12-02 16:46:49,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226346684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-02 16:46:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598583777] [2023-12-02 16:46:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 16:46:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 16:46:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:46:49,236 INFO L87 Difference]: Start difference. First operand 854 states and 1166 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 16:47:00,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:47:06,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:47:15,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:47:38,118 WARN L293 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 106 DAG size of output: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:47:53,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:48:11,088 INFO L93 Difference]: Finished difference Result 1792 states and 2442 transitions. [2023-12-02 16:48:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 16:48:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 130 [2023-12-02 16:48:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:48:11,093 INFO L225 Difference]: With dead ends: 1792 [2023-12-02 16:48:11,093 INFO L226 Difference]: Without dead ends: 939 [2023-12-02 16:48:11,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:48:11,094 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 735 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 83 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:48:11,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1004 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2747 Invalid, 4 Unknown, 0 Unchecked, 61.0s Time] [2023-12-02 16:48:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-12-02 16:48:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 866. [2023-12-02 16:48:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 783 states have (on average 1.3295019157088122) internal successors, (1041), 790 states have internal predecessors, (1041), 69 states have call successors, (69), 13 states have call predecessors, (69), 13 states have return successors, (69), 62 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-02 16:48:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1179 transitions. [2023-12-02 16:48:11,147 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1179 transitions. Word has length 130 [2023-12-02 16:48:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:48:11,148 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1179 transitions. [2023-12-02 16:48:11,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 16:48:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1179 transitions. [2023-12-02 16:48:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-02 16:48:11,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:48:11,150 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:11,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (25)] Forceful destruction successful, exit code 0 [2023-12-02 16:48:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:48:11,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:48:11,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:48:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1047782920, now seen corresponding path program 1 times [2023-12-02 16:48:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:48:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392363338] [2023-12-02 16:48:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:11,352 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 16:48:11,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:48:11,353 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 16:48:11,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecb84b6-4f21-4792-af0b-19159dd129d3/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 (26)] Waiting until timeout for monitored process [2023-12-02 16:48:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:11,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:48:11,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:11,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-02 16:48:11,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2023-12-02 16:48:11,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:48:11,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 35 [2023-12-02 16:48:18,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:48:18,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 49 [2023-12-02 16:48:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-02 16:48:18,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:48:18,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:48:18,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392363338] [2023-12-02 16:48:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392363338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:48:18,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:48:18,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:48:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442329433] [2023-12-02 16:48:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:48:18,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:48:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:48:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:48:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=53, Unknown=3, NotChecked=0, Total=72 [2023-12-02 16:48:18,414 INFO L87 Difference]: Start difference. First operand 866 states and 1179 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 16:48:20,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:23,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:26,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:28,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:30,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:32,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:39,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:41,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:44,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:46,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:48,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:50,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:52,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:54,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:56,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:48:58,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:00,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:02,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:04,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:07,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:10,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:12,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:14,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:17,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:21,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:23,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:25,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:28,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:49:30,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]