./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 64fa20811e3d6b4f48d530fd12c5b3e1f5523460c92f2bd0d2e9efe97c916004 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:20:53,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:20:53,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:20:53,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:20:53,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:20:53,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:20:53,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:20:53,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:20:53,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:20:53,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:20:53,590 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:20:53,591 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:20:53,591 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:20:53,592 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:20:53,592 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:20:53,593 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:20:53,593 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:20:53,594 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:20:53,594 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:20:53,595 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:20:53,595 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:20:53,596 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:20:53,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:20:53,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:20:53,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:20:53,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:20:53,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:20:53,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:20:53,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:20:53,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:20:53,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:20:53,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:20:53,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:20:53,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:20:53,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:20:53,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:20:53,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:20:53,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:20:53,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:20:53,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:20:53,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:20:53,603 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:20:53,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:20:53,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:20:53,604 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:20:53,604 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:20:53,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:20:53,604 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fa20811e3d6b4f48d530fd12c5b3e1f5523460c92f2bd0d2e9efe97c916004 [2023-12-02 08:20:53,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:20:53,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:20:53,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:20:53,854 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:20:53,855 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:20:53,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:20:56,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:20:56,825 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:20:56,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:20:56,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/1455c1a96/7dabc249a9eb4cf1859c1e0906d2368a/FLAG22330aaac [2023-12-02 08:20:56,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/1455c1a96/7dabc249a9eb4cf1859c1e0906d2368a [2023-12-02 08:20:56,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:20:56,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:20:56,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:20:56,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:20:56,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:20:56,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:20:56" (1/1) ... [2023-12-02 08:20:56,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea7bc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:56, skipping insertion in model container [2023-12-02 08:20:56,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:20:56" (1/1) ... [2023-12-02 08:20:56,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:20:57,013 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i[915,928] [2023-12-02 08:20:57,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:20:57,074 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:20:57,087 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i[915,928] [2023-12-02 08:20:57,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:20:57,143 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:20:57,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57 WrapperNode [2023-12-02 08:20:57,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:20:57,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:20:57,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:20:57,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:20:57,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,196 INFO L138 Inliner]: procedures = 29, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 393 [2023-12-02 08:20:57,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:20:57,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:20:57,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:20:57,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:20:57,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:20:57,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:20:57,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:20:57,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:20:57,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (1/1) ... [2023-12-02 08:20:57,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:20:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:57,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:20:57,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:20:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 08:20:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 08:20:57,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 08:20:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:20:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:20:57,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:20:57,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:20:57,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:20:57,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:20:58,222 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:20:58,222 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 08:20:58,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:20:58 BoogieIcfgContainer [2023-12-02 08:20:58,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:20:58,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:20:58,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:20:58,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:20:58,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:20:56" (1/3) ... [2023-12-02 08:20:58,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26e8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:20:58, skipping insertion in model container [2023-12-02 08:20:58,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:20:57" (2/3) ... [2023-12-02 08:20:58,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26e8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:20:58, skipping insertion in model container [2023-12-02 08:20:58,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:20:58" (3/3) ... [2023-12-02 08:20:58,232 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:20:58,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:20:58,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:20:58,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:20:58,294 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;@784b690d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:20:58,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:20:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:20:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 08:20:58,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:58,307 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:58,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1657585186, now seen corresponding path program 1 times [2023-12-02 08:20:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:20:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528007096] [2023-12-02 08:20:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:20:58,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 08:20:58,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549219696] [2023-12-02 08:20:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:58,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:58,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:58,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:20:58,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:21:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 08:21:00,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 08:21:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 08:21:01,363 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 08:21:01,366 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 08:21:01,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 08:21:01,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:21:01,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 08:21:01,589 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 08:21:01,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:21:01,620 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated [2023-12-02 08:21:01,623 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated [2023-12-02 08:21:01,623 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 08:21:01,624 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 08:21:01,624 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 08:21:01,624 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 08:21:01,624 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 08:21:01,625 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 08:21:01,625 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 08:21:01,625 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 08:21:01,625 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 08:21:01,626 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 08:21:01,626 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 08:21:01,626 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 08:21:01,627 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 08:21:01,627 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 08:21:01,627 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated [2023-12-02 08:21:01,627 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 08:21:01,628 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated [2023-12-02 08:21:01,628 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated [2023-12-02 08:21:01,628 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 08:21:01,628 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 08:21:01,628 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated [2023-12-02 08:21:01,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 08:21:01,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 08:21:01,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 08:21:01,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 08:21:01,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 08:21:01,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 08:21:01,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 08:21:01,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 08:21:01,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated [2023-12-02 08:21:01,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated [2023-12-02 08:21:01,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 08:21:01,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated [2023-12-02 08:21:01,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 08:21:01,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 08:21:01,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 08:21:01,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 08:21:01,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 08:21:01,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 08:21:01,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 08:21:01,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated [2023-12-02 08:21:01,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 08:21:01,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 08:21:01,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 08:21:01,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 08:21:01,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 08:21:01,655 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 08:21:01,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 08:21:01,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short72 could not be translated [2023-12-02 08:21:01,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated [2023-12-02 08:21:01,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 08:21:01,657 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short76 could not be translated [2023-12-02 08:21:01,657 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 08:21:01,657 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short76 could not be translated [2023-12-02 08:21:01,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 08:21:01,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 08:21:01,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 08:21:01,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated [2023-12-02 08:21:01,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short72 could not be translated [2023-12-02 08:21:01,659 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 08:21:01,659 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated [2023-12-02 08:21:01,659 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated [2023-12-02 08:21:01,660 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated [2023-12-02 08:21:01,660 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated [2023-12-02 08:21:01,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:21:01 BoogieIcfgContainer [2023-12-02 08:21:01,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:21:01,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:21:01,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:21:01,679 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:21:01,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:20:58" (3/4) ... [2023-12-02 08:21:01,682 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 08:21:01,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:21:01,684 INFO L158 Benchmark]: Toolchain (without parser) took 4836.78ms. Allocated memory is still 163.6MB. Free memory was 116.0MB in the beginning and 123.2MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:21:01,685 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:21:01,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.15ms. Allocated memory is still 163.6MB. Free memory was 115.7MB in the beginning and 99.9MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 08:21:01,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.79ms. Allocated memory is still 163.6MB. Free memory was 99.9MB in the beginning and 96.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 08:21:01,686 INFO L158 Benchmark]: Boogie Preprocessor took 53.65ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 92.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 08:21:01,687 INFO L158 Benchmark]: RCFGBuilder took 972.64ms. Allocated memory is still 163.6MB. Free memory was 92.6MB in the beginning and 125.0MB in the end (delta: -32.4MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2023-12-02 08:21:01,688 INFO L158 Benchmark]: TraceAbstraction took 3452.27ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 124.3MB in the end (delta: -207.7kB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. [2023-12-02 08:21:01,688 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 163.6MB. Free memory was 124.3MB in the beginning and 123.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:21:01,691 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.15ms. Allocated memory is still 163.6MB. Free memory was 115.7MB in the beginning and 99.9MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.79ms. Allocated memory is still 163.6MB. Free memory was 99.9MB in the beginning and 96.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.65ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 92.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 972.64ms. Allocated memory is still 163.6MB. Free memory was 92.6MB in the beginning and 125.0MB in the end (delta: -32.4MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3452.27ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 124.3MB in the end (delta: -207.7kB). Peak memory consumption was 72.9MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 163.6MB. Free memory was 124.3MB in the beginning and 123.2MB 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~mem34 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem79 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem79 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 114, overapproximation of someBinaryArithmeticFLOAToperation at line 76. Possible FailurePath: [L39] unsigned char isInitial = 0; [L40-L56] struct WrapperStruct00 WrapperStruct00 = { 0, 0, 0, 0, 0, 64, 2.4, 127.75, 0.0, 31.4, 256.75, 256.6, 0, 32, 100 }; [L118] isInitial = 1 [L119] FCALL initially() [L120] COND TRUE 1 [L121] FCALL updateLastVariables() [L122] CALL updateVariables() [L87] WrapperStruct00.var_1_4 = __VERIFIER_nondet_uchar() [L88] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L88] CALL assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L89] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L89] CALL assume_abort_if_not(WrapperStruct00.var_1_4 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(WrapperStruct00.var_1_4 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L90] WrapperStruct00.var_1_5 = __VERIFIER_nondet_uchar() [L91] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L91] CALL assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L92] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L92] CALL assume_abort_if_not(WrapperStruct00.var_1_5 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(WrapperStruct00.var_1_5 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L93] WrapperStruct00.var_1_6 = __VERIFIER_nondet_uchar() [L94] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1] [L94] CALL assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L95] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1] [L95] CALL assume_abort_if_not(WrapperStruct00.var_1_6 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(WrapperStruct00.var_1_6 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L96] WrapperStruct00.var_1_7 = __VERIFIER_nondet_uchar() [L97] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1] [L97] CALL assume_abort_if_not(WrapperStruct00.var_1_7 >= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(WrapperStruct00.var_1_7 >= 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L98] EXPR WrapperStruct00.var_1_7 VAL [WrapperStruct00={4:0}, isInitial=1] [L98] CALL assume_abort_if_not(WrapperStruct00.var_1_7 <= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(WrapperStruct00.var_1_7 <= 1) VAL [WrapperStruct00={4:0}, isInitial=1] [L99] WrapperStruct00.var_1_13 = __VERIFIER_nondet_float() [L100] EXPR WrapperStruct00.var_1_13 [L100] EXPR WrapperStruct00.var_1_13 >= -461168.6018427382800e+13F && WrapperStruct00.var_1_13 <= -1.0e-20F [L100] EXPR WrapperStruct00.var_1_13 [L100] EXPR WrapperStruct00.var_1_13 >= -461168.6018427382800e+13F && WrapperStruct00.var_1_13 <= -1.0e-20F [L100] EXPR (WrapperStruct00.var_1_13 >= -461168.6018427382800e+13F && WrapperStruct00.var_1_13 <= -1.0e-20F) || (WrapperStruct00.var_1_13 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_13 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L100] CALL assume_abort_if_not((WrapperStruct00.var_1_13 >= -461168.6018427382800e+13F && WrapperStruct00.var_1_13 <= -1.0e-20F) || (WrapperStruct00.var_1_13 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_13 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not((WrapperStruct00.var_1_13 >= -461168.6018427382800e+13F && WrapperStruct00.var_1_13 <= -1.0e-20F) || (WrapperStruct00.var_1_13 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_13 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L101] WrapperStruct00.var_1_14 = __VERIFIER_nondet_float() [L102] EXPR WrapperStruct00.var_1_14 [L102] EXPR WrapperStruct00.var_1_14 >= 2305843.009213691390e+12F && WrapperStruct00.var_1_14 <= -1.0e-20F [L102] EXPR WrapperStruct00.var_1_14 [L102] EXPR WrapperStruct00.var_1_14 >= 2305843.009213691390e+12F && WrapperStruct00.var_1_14 <= -1.0e-20F [L102] EXPR (WrapperStruct00.var_1_14 >= 2305843.009213691390e+12F && WrapperStruct00.var_1_14 <= -1.0e-20F) || (WrapperStruct00.var_1_14 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_14 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L102] CALL assume_abort_if_not((WrapperStruct00.var_1_14 >= 2305843.009213691390e+12F && WrapperStruct00.var_1_14 <= -1.0e-20F) || (WrapperStruct00.var_1_14 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_14 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not((WrapperStruct00.var_1_14 >= 2305843.009213691390e+12F && WrapperStruct00.var_1_14 <= -1.0e-20F) || (WrapperStruct00.var_1_14 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_14 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L103] WrapperStruct00.var_1_15 = __VERIFIER_nondet_float() [L104] EXPR WrapperStruct00.var_1_15 [L104] EXPR WrapperStruct00.var_1_15 >= 0.0F && WrapperStruct00.var_1_15 <= -1.0e-20F [L104] EXPR WrapperStruct00.var_1_15 [L104] EXPR WrapperStruct00.var_1_15 >= 0.0F && WrapperStruct00.var_1_15 <= -1.0e-20F [L104] EXPR (WrapperStruct00.var_1_15 >= 0.0F && WrapperStruct00.var_1_15 <= -1.0e-20F) || (WrapperStruct00.var_1_15 <= 2305843.009213691390e+12F && WrapperStruct00.var_1_15 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L104] CALL assume_abort_if_not((WrapperStruct00.var_1_15 >= 0.0F && WrapperStruct00.var_1_15 <= -1.0e-20F) || (WrapperStruct00.var_1_15 <= 2305843.009213691390e+12F && WrapperStruct00.var_1_15 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not((WrapperStruct00.var_1_15 >= 0.0F && WrapperStruct00.var_1_15 <= -1.0e-20F) || (WrapperStruct00.var_1_15 <= 2305843.009213691390e+12F && WrapperStruct00.var_1_15 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L105] WrapperStruct00.var_1_16 = __VERIFIER_nondet_float() [L106] EXPR WrapperStruct00.var_1_16 [L106] EXPR WrapperStruct00.var_1_16 >= 0.0F && WrapperStruct00.var_1_16 <= -1.0e-20F [L106] EXPR (WrapperStruct00.var_1_16 >= 0.0F && WrapperStruct00.var_1_16 <= -1.0e-20F) || (WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F ) [L106] EXPR WrapperStruct00.var_1_16 [L106] EXPR WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F [L106] EXPR WrapperStruct00.var_1_16 [L106] EXPR WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F [L106] EXPR (WrapperStruct00.var_1_16 >= 0.0F && WrapperStruct00.var_1_16 <= -1.0e-20F) || (WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L106] CALL assume_abort_if_not((WrapperStruct00.var_1_16 >= 0.0F && WrapperStruct00.var_1_16 <= -1.0e-20F) || (WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not((WrapperStruct00.var_1_16 >= 0.0F && WrapperStruct00.var_1_16 <= -1.0e-20F) || (WrapperStruct00.var_1_16 <= 4611686.018427382800e+12F && WrapperStruct00.var_1_16 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L107] WrapperStruct00.var_1_20 = __VERIFIER_nondet_uchar() [L108] EXPR WrapperStruct00.var_1_20 VAL [WrapperStruct00={4:0}, isInitial=1] [L108] CALL assume_abort_if_not(WrapperStruct00.var_1_20 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(WrapperStruct00.var_1_20 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L109] EXPR WrapperStruct00.var_1_20 VAL [WrapperStruct00={4:0}, isInitial=1] [L109] CALL assume_abort_if_not(WrapperStruct00.var_1_20 <= 254) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not(WrapperStruct00.var_1_20 <= 254) VAL [WrapperStruct00={4:0}, isInitial=1] [L122] RET updateVariables() [L123] CALL step() [L60] EXPR WrapperStruct00.var_1_14 [L60] WrapperStruct00.var_1_17 = WrapperStruct00.var_1_14 [L61] EXPR WrapperStruct00.var_1_20 [L61] WrapperStruct00.var_1_19 = WrapperStruct00.var_1_20 [L62] EXPR WrapperStruct00.var_1_19 [L62] WrapperStruct00.var_1_18 = WrapperStruct00.var_1_19 [L63] EXPR WrapperStruct00.var_1_19 [L63] unsigned char stepLocal_1 = WrapperStruct00.var_1_19; [L64] EXPR WrapperStruct00.var_1_18 [L64] EXPR WrapperStruct00.var_1_18 [L64] EXPR WrapperStruct00.var_1_19 [L64] EXPR WrapperStruct00.var_1_19 [L64] signed long int stepLocal_0 = (WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19); [L65] COND FALSE !(stepLocal_0 >= 1u) [L72] EXPR WrapperStruct00.var_1_19 [L72] WrapperStruct00.var_1_8 = WrapperStruct00.var_1_19 [L74] EXPR WrapperStruct00.var_1_8 [L74] signed long int stepLocal_2 = WrapperStruct00.var_1_8; [L75] EXPR WrapperStruct00.var_1_19 [L75] COND FALSE !(WrapperStruct00.var_1_19 > stepLocal_2) [L78] EXPR WrapperStruct00.var_1_16 [L78] EXPR WrapperStruct00.var_1_14 [L78] EXPR WrapperStruct00.var_1_15 [L78] WrapperStruct00.var_1_12 = (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)) [L80] EXPR WrapperStruct00.var_1_18 [L80] EXPR WrapperStruct00.var_1_8 [L80] COND FALSE !(WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) [L83] EXPR WrapperStruct00.var_1_7 [L83] WrapperStruct00.var_1_1 = WrapperStruct00.var_1_7 [L123] RET step() [L124] CALL, EXPR property() [L114] EXPR WrapperStruct00.var_1_18 [L114] EXPR WrapperStruct00.var_1_8 [L114] EXPR (WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)) [L114] EXPR WrapperStruct00.var_1_1 [L114] EXPR WrapperStruct00.var_1_7 [L114] EXPR (WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7)) [L114] EXPR ((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) [L114] EXPR WrapperStruct00.var_1_18 [L114] EXPR WrapperStruct00.var_1_18 [L114] EXPR WrapperStruct00.var_1_19 [L114] EXPR WrapperStruct00.var_1_19 [L114] EXPR (((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) [L114] EXPR WrapperStruct00.var_1_8 [L114] EXPR WrapperStruct00.var_1_19 [L114] EXPR (((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) [L114] EXPR ((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) [L114] EXPR (((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15))))) [L114] EXPR WrapperStruct00.var_1_19 [L114] EXPR WrapperStruct00.var_1_8 [L114] EXPR (WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))) [L114] EXPR WrapperStruct00.var_1_12 [L114] EXPR WrapperStruct00.var_1_16 [L114] EXPR WrapperStruct00.var_1_14 [L114] EXPR WrapperStruct00.var_1_15 [L114] EXPR (WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))) [L114] EXPR (((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15))))) [L114] EXPR ((((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))))) && (WrapperStruct00.var_1_17 == ((float) WrapperStruct00.var_1_14)) [L114] EXPR (((((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))))) && (WrapperStruct00.var_1_17 == ((float) WrapperStruct00.var_1_14))) && (WrapperStruct00.var_1_18 == ((signed long int) WrapperStruct00.var_1_19)) [L114] EXPR ((((((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))))) && (WrapperStruct00.var_1_17 == ((float) WrapperStruct00.var_1_14))) && (WrapperStruct00.var_1_18 == ((signed long int) WrapperStruct00.var_1_19))) && (WrapperStruct00.var_1_19 == ((unsigned char) WrapperStruct00.var_1_20)) [L114-L115] return ((((((WrapperStruct00.var_1_18 >= (8u * WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_1 == ((unsigned char) (! (WrapperStruct00.var_1_4 || (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))))) : (WrapperStruct00.var_1_1 == ((unsigned char) WrapperStruct00.var_1_7))) && ((((WrapperStruct00.var_1_18 * WrapperStruct00.var_1_18) * (WrapperStruct00.var_1_19 - WrapperStruct00.var_1_19)) >= 1u) ? ((WrapperStruct00.var_1_18 <= WrapperStruct00.var_1_19) ? (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19))) : (WrapperStruct00.var_1_8 == ((signed long int) WrapperStruct00.var_1_19)))) && ((WrapperStruct00.var_1_19 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_13 + ((WrapperStruct00.var_1_14 - WrapperStruct00.var_1_15) - WrapperStruct00.var_1_16)))) : (WrapperStruct00.var_1_12 == ((float) (WrapperStruct00.var_1_16 - (WrapperStruct00.var_1_14 + WrapperStruct00.var_1_15)))))) && (WrapperStruct00.var_1_17 == ((float) WrapperStruct00.var_1_14))) && (WrapperStruct00.var_1_18 == ((signed long int) WrapperStruct00.var_1_19))) && (WrapperStruct00.var_1_19 == ((unsigned char) WrapperStruct00.var_1_20)) ; [L124] RET, EXPR property() [L124] 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 1, TraceHistogramMax: 14, 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=37occurred 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, 1.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 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 08:21:01,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 64fa20811e3d6b4f48d530fd12c5b3e1f5523460c92f2bd0d2e9efe97c916004 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:21:03,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:21:03,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 08:21:03,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:21:03,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:21:03,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:21:03,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:21:03,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:21:03,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:21:03,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:21:03,794 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:21:03,795 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:21:03,795 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:21:03,796 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:21:03,797 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:21:03,797 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:21:03,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:21:03,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:21:03,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:21:03,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:21:03,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:21:03,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:21:03,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:21:03,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:21:03,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:21:03,803 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 08:21:03,803 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 08:21:03,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:21:03,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:21:03,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:21:03,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:21:03,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 08:21:03,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:21:03,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:21:03,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:21:03,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:21:03,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:21:03,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:21:03,807 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 08:21:03,807 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 08:21:03,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:21:03,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:21:03,808 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:21:03,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:21:03,808 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fa20811e3d6b4f48d530fd12c5b3e1f5523460c92f2bd0d2e9efe97c916004 [2023-12-02 08:21:04,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:21:04,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:21:04,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:21:04,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:21:04,114 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:21:04,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:21:06,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:21:07,072 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:21:07,073 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:21:07,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/5ced33881/f3d489c6c2fd47d7828a8b6417a3097d/FLAG9fdf59934 [2023-12-02 08:21:07,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/data/5ced33881/f3d489c6c2fd47d7828a8b6417a3097d [2023-12-02 08:21:07,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:21:07,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:21:07,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:21:07,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:21:07,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:21:07,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c9b5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07, skipping insertion in model container [2023-12-02 08:21:07,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:21:07,254 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i[915,928] [2023-12-02 08:21:07,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:21:07,326 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:21:07,337 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_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-8.i[915,928] [2023-12-02 08:21:07,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:21:07,401 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:21:07,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07 WrapperNode [2023-12-02 08:21:07,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:21:07,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:21:07,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:21:07,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:21:07,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,464 INFO L138 Inliner]: procedures = 33, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 393 [2023-12-02 08:21:07,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:21:07,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:21:07,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:21:07,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:21:07,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:21:07,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:21:07,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:21:07,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:21:07,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (1/1) ... [2023-12-02 08:21:07,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:21:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:07,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:21:07,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:21:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:21:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 08:21:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 08:21:07,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 08:21:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 08:21:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 08:21:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 08:21:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 08:21:07,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 08:21:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 08:21:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:21:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:21:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 08:21:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 08:21:07,748 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:21:07,750 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:21:10,464 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:21:10,507 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:21:10,507 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 08:21:10,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:10 BoogieIcfgContainer [2023-12-02 08:21:10,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:21:10,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:21:10,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:21:10,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:21:10,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:21:07" (1/3) ... [2023-12-02 08:21:10,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:10, skipping insertion in model container [2023-12-02 08:21:10,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:07" (2/3) ... [2023-12-02 08:21:10,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545d73f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:10, skipping insertion in model container [2023-12-02 08:21:10,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:10" (3/3) ... [2023-12-02 08:21:10,517 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-8.i [2023-12-02 08:21:10,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:21:10,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:21:10,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:21:10,589 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;@27b7d46f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:21:10,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:21:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 77 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 08:21:10,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:10,609 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:10,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:10,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -955699358, now seen corresponding path program 1 times [2023-12-02 08:21:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319780058] [2023-12-02 08:21:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:10,628 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 08:21:10,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:10,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:10,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:11,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 08:21:11,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-02 08:21:11,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:11,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:11,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319780058] [2023-12-02 08:21:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319780058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:11,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:21:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507284141] [2023-12-02 08:21:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:21:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:21:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:21:11,160 INFO L87 Difference]: Start difference. First operand has 93 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 77 states have internal predecessors, (110), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:11,220 INFO L93 Difference]: Finished difference Result 183 states and 288 transitions. [2023-12-02 08:21:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:21:11,222 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-12-02 08:21:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:11,228 INFO L225 Difference]: With dead ends: 183 [2023-12-02 08:21:11,229 INFO L226 Difference]: Without dead ends: 91 [2023-12-02 08:21:11,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 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 08:21:11,235 INFO L413 NwaCegarLoop]: 129 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, 129 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 08:21:11,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:21:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-02 08:21:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-02 08:21:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.4) internal successors, (105), 75 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 133 transitions. [2023-12-02 08:21:11,284 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 133 transitions. Word has length 118 [2023-12-02 08:21:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:11,284 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 133 transitions. [2023-12-02 08:21:11,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:11,285 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2023-12-02 08:21:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 08:21:11,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:11,289 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:11,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:11,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:11,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:11,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2090190898, now seen corresponding path program 1 times [2023-12-02 08:21:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225867271] [2023-12-02 08:21:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:11,495 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 08:21:11,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:11,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:11,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:11,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:21:11,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-02 08:21:11,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:11,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225867271] [2023-12-02 08:21:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225867271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:11,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:11,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:21:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890658649] [2023-12-02 08:21:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:21:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:21:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:21:11,970 INFO L87 Difference]: Start difference. First operand 91 states and 133 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:12,111 INFO L93 Difference]: Finished difference Result 187 states and 274 transitions. [2023-12-02 08:21:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:21:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-12-02 08:21:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:12,114 INFO L225 Difference]: With dead ends: 187 [2023-12-02 08:21:12,114 INFO L226 Difference]: Without dead ends: 97 [2023-12-02 08:21:12,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:21:12,117 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 10 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:12,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 379 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:21:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-02 08:21:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-12-02 08:21:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2023-12-02 08:21:12,134 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 118 [2023-12-02 08:21:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:12,135 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2023-12-02 08:21:12,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2023-12-02 08:21:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 08:21:12,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:12,138 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:12,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:12,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:12,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:12,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1609110640, now seen corresponding path program 1 times [2023-12-02 08:21:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:12,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284433402] [2023-12-02 08:21:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:12,340 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 08:21:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:12,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:12,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:12,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:21:12,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:21:12,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:12,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284433402] [2023-12-02 08:21:12,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284433402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:12,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:21:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100931282] [2023-12-02 08:21:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:21:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:21:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:21:12,802 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:12,999 INFO L93 Difference]: Finished difference Result 206 states and 299 transitions. [2023-12-02 08:21:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:21:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-02 08:21:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:13,004 INFO L225 Difference]: With dead ends: 206 [2023-12-02 08:21:13,004 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 08:21:13,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:21:13,007 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 46 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:13,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 494 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:21:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 08:21:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2023-12-02 08:21:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 81 states have internal predecessors, (111), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2023-12-02 08:21:13,021 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 118 [2023-12-02 08:21:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:13,022 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2023-12-02 08:21:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2023-12-02 08:21:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 08:21:13,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:13,026 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:13,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:13,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:13,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1876510030, now seen corresponding path program 1 times [2023-12-02 08:21:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723116376] [2023-12-02 08:21:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:13,236 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 08:21:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:13,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:13,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:13,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:21:13,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:21:13,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:13,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723116376] [2023-12-02 08:21:13,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723116376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:13,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:13,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 08:21:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608820747] [2023-12-02 08:21:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:13,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:21:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:21:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:21:13,673 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:13,961 INFO L93 Difference]: Finished difference Result 213 states and 304 transitions. [2023-12-02 08:21:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 08:21:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 118 [2023-12-02 08:21:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:13,964 INFO L225 Difference]: With dead ends: 213 [2023-12-02 08:21:13,964 INFO L226 Difference]: Without dead ends: 117 [2023-12-02 08:21:13,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:21:13,966 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 49 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:13,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 611 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:21:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-02 08:21:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2023-12-02 08:21:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 83 states have (on average 1.3614457831325302) internal successors, (113), 83 states have internal predecessors, (113), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2023-12-02 08:21:13,980 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 118 [2023-12-02 08:21:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:13,981 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2023-12-02 08:21:13,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2023-12-02 08:21:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 08:21:13,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:13,984 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:13,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:14,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:14,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:14,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1933768332, now seen corresponding path program 1 times [2023-12-02 08:21:14,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:14,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273982901] [2023-12-02 08:21:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:14,186 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 08:21:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:14,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:14,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:14,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:21:14,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:14,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 97 treesize of output 43 [2023-12-02 08:21:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 08:21:14,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:14,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:14,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273982901] [2023-12-02 08:21:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273982901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:14,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:21:14,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436032786] [2023-12-02 08:21:14,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:14,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:21:14,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:21:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:21:14,998 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:16,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:19,293 INFO L93 Difference]: Finished difference Result 203 states and 290 transitions. [2023-12-02 08:21:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:21:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2023-12-02 08:21:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:19,296 INFO L225 Difference]: With dead ends: 203 [2023-12-02 08:21:19,296 INFO L226 Difference]: Without dead ends: 105 [2023-12-02 08:21:19,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:21:19,298 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 112 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:19,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 363 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 08:21:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-02 08:21:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2023-12-02 08:21:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 states have internal predecessors, (112), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2023-12-02 08:21:19,308 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 118 [2023-12-02 08:21:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:19,309 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2023-12-02 08:21:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2023-12-02 08:21:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 08:21:19,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:19,311 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:19,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:19,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:19,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash 810555538, now seen corresponding path program 1 times [2023-12-02 08:21:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751658631] [2023-12-02 08:21:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:19,513 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 08:21:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:19,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:19,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:19,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:21:19,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 95 treesize of output 41 [2023-12-02 08:21:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-02 08:21:20,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:21:20,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751658631] [2023-12-02 08:21:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751658631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:20,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:21:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586893154] [2023-12-02 08:21:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:20,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:21:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:21:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:21:20,302 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:22,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:24,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:24,770 INFO L93 Difference]: Finished difference Result 201 states and 285 transitions. [2023-12-02 08:21:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:21:24,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-12-02 08:21:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:24,772 INFO L225 Difference]: With dead ends: 201 [2023-12-02 08:21:24,772 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 08:21:24,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:21:24,773 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 108 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:24,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 354 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-02 08:21:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 08:21:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2023-12-02 08:21:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:21:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-12-02 08:21:24,780 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 120 [2023-12-02 08:21:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-12-02 08:21:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:21:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-12-02 08:21:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 08:21:24,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:24,782 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:24,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:24,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:24,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:24,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash -641567606, now seen corresponding path program 1 times [2023-12-02 08:21:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062899207] [2023-12-02 08:21:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:24,984 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 08:21:24,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:24,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:24,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:25,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 08:21:25,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:25,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 94 treesize of output 40 [2023-12-02 08:21:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 40 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-02 08:21:25,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:26,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 58 treesize of output 22 [2023-12-02 08:21:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:21:26,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062899207] [2023-12-02 08:21:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062899207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [858082531] [2023-12-02 08:21:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:26,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:21:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:21:26,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:21:26,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 08:21:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:27,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 08:21:27,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:28,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 123 treesize of output 51 [2023-12-02 08:21:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 40 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-02 08:21:28,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:28,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 88 treesize of output 34 [2023-12-02 08:21:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:21:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [858082531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487032131] [2023-12-02 08:21:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:28,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:21:28,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:28,701 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:21:28,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 08:21:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:28,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 08:21:28,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:29,679 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 08:21:29,794 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 08:21:29,935 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 08:21:30,076 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 08:21:30,201 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 08:21:30,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:30,644 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 80 treesize of output 57 [2023-12-02 08:21:30,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:30,920 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 88 treesize of output 63 [2023-12-02 08:21:31,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:31,025 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 88 treesize of output 63 [2023-12-02 08:21:31,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:31,133 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 88 treesize of output 72 [2023-12-02 08:21:31,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:31,484 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 128 treesize of output 56 [2023-12-02 08:21:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 213 proven. 69 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-02 08:21:31,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:21:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487032131] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 08:21:32,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2023-12-02 08:21:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8, 10, 9, 15] total 30 [2023-12-02 08:21:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489811072] [2023-12-02 08:21:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:32,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:21:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:21:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2023-12-02 08:21:32,269 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:35,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:39,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:40,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:21:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:44,323 INFO L93 Difference]: Finished difference Result 264 states and 368 transitions. [2023-12-02 08:21:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 08:21:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 122 [2023-12-02 08:21:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:44,326 INFO L225 Difference]: With dead ends: 264 [2023-12-02 08:21:44,326 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 08:21:44,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 696 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 08:21:44,328 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:44,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 568 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-02 08:21:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 08:21:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 146. [2023-12-02 08:21:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 124 states have internal predecessors, (163), 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 08:21:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 203 transitions. [2023-12-02 08:21:44,341 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 203 transitions. Word has length 122 [2023-12-02 08:21:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:44,342 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 203 transitions. [2023-12-02 08:21:44,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:21:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 203 transitions. [2023-12-02 08:21:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 08:21:44,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:44,344 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:44,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 08:21:44,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:44,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 08:21:44,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:21:44,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:44,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash 263555471, now seen corresponding path program 1 times [2023-12-02 08:21:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:21:44,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149497510] [2023-12-02 08:21:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:44,946 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 08:21:44,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:21:44,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:44,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:21:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:45,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 08:21:45,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:45,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 94 treesize of output 40 [2023-12-02 08:21:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 40 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-02 08:21:46,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:46,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 58 treesize of output 22 [2023-12-02 08:21:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:21:46,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:21:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149497510] [2023-12-02 08:21:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149497510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350960022] [2023-12-02 08:21:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:46,557 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:21:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:21:46,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:21:46,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 08:21:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:47,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 08:21:47,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:48,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 123 treesize of output 51 [2023-12-02 08:21:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 40 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-02 08:21:48,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:48,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 88 treesize of output 34 [2023-12-02 08:21:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:21:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350960022] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218792220] [2023-12-02 08:21:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:21:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:48,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:21:48,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 08:21:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:49,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 08:21:49,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:49,387 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 31 treesize of output 15 [2023-12-02 08:21:49,501 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 31 treesize of output 15 [2023-12-02 08:21:49,609 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 31 treesize of output 15 [2023-12-02 08:21:49,716 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 31 treesize of output 15 [2023-12-02 08:21:49,797 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 31 treesize of output 15 [2023-12-02 08:21:49,893 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 31 treesize of output 15 [2023-12-02 08:21:49,987 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 31 treesize of output 15 [2023-12-02 08:21:50,065 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 26 treesize of output 25 [2023-12-02 08:21:50,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:50,439 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 65 treesize of output 39 [2023-12-02 08:21:50,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:50,641 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 58 treesize of output 42 [2023-12-02 08:21:50,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:50,876 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 58 treesize of output 42 [2023-12-02 08:21:50,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:21:50,963 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 66 treesize of output 30 [2023-12-02 08:21:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 143 proven. 36 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-02 08:21:51,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:21:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:21:52,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218792220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:21:52,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:21:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10, 9, 9, 7] total 24 [2023-12-02 08:21:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676199154] [2023-12-02 08:21:52,154 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:21:52,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 08:21:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:21:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 08:21:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-12-02 08:21:52,158 INFO L87 Difference]: Start difference. First operand 146 states and 203 transitions. Second operand has 24 states, 21 states have (on average 7.285714285714286) internal successors, (153), 24 states have internal predecessors, (153), 8 states have call successors, (53), 5 states have call predecessors, (53), 7 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) [2023-12-02 08:22:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:22:07,209 INFO L93 Difference]: Finished difference Result 327 states and 441 transitions. [2023-12-02 08:22:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 08:22:07,211 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.285714285714286) internal successors, (153), 24 states have internal predecessors, (153), 8 states have call successors, (53), 5 states have call predecessors, (53), 7 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) Word has length 124 [2023-12-02 08:22:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:22:07,214 INFO L225 Difference]: With dead ends: 327 [2023-12-02 08:22:07,215 INFO L226 Difference]: Without dead ends: 169 [2023-12-02 08:22:07,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 714 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=451, Invalid=1999, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 08:22:07,217 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 260 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:22:07,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 611 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 08:22:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-02 08:22:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 158. [2023-12-02 08:22:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.2803030303030303) internal successors, (169), 133 states have internal predecessors, (169), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 08:22:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 209 transitions. [2023-12-02 08:22:07,234 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 209 transitions. Word has length 124 [2023-12-02 08:22:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:22:07,234 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 209 transitions. [2023-12-02 08:22:07,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.285714285714286) internal successors, (153), 24 states have internal predecessors, (153), 8 states have call successors, (53), 5 states have call predecessors, (53), 7 states have return successors, (53), 5 states have call predecessors, (53), 8 states have call successors, (53) [2023-12-02 08:22:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 209 transitions. [2023-12-02 08:22:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 08:22:07,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:22:07,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:07,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:07,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 08:22:07,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 08:22:07,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:22:07,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:22:07,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:22:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1626778545, now seen corresponding path program 1 times [2023-12-02 08:22:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:22:07,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182476344] [2023-12-02 08:22:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:07,839 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 08:22:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:22:07,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:07,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:22:08,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:22:08,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:22:08,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 95 treesize of output 41 [2023-12-02 08:22:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 08:22:08,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:22:08,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:22:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182476344] [2023-12-02 08:22:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182476344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:22:08,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:22:08,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:22:08,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65612678] [2023-12-02 08:22:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:22:08,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:22:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:22:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:22:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:22:08,836 INFO L87 Difference]: Start difference. First operand 158 states and 209 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:22:12,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:22:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:22:14,470 INFO L93 Difference]: Finished difference Result 321 states and 426 transitions. [2023-12-02 08:22:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:22:14,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2023-12-02 08:22:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:22:14,472 INFO L225 Difference]: With dead ends: 321 [2023-12-02 08:22:14,472 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 08:22:14,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:22:14,473 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 89 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:22:14,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 342 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 08:22:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 08:22:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2023-12-02 08:22:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.2727272727272727) internal successors, (168), 133 states have internal predecessors, (168), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 08:22:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2023-12-02 08:22:14,483 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 124 [2023-12-02 08:22:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:22:14,484 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2023-12-02 08:22:14,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 08:22:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2023-12-02 08:22:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 08:22:14,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:22:14,485 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:14,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:14,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:14,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:22:14,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:22:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 175470135, now seen corresponding path program 1 times [2023-12-02 08:22:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:22:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410316261] [2023-12-02 08:22:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:14,687 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 08:22:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:22:14,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:14,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:22:15,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 08:22:15,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:22:15,131 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 08:22:15,267 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 26 treesize of output 25 [2023-12-02 08:22:15,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:15,561 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 36 treesize of output 38 [2023-12-02 08:22:16,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:16,020 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 51 treesize of output 41 [2023-12-02 08:22:16,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:16,370 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 51 treesize of output 41 [2023-12-02 08:22:16,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:16,635 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 51 treesize of output 41 [2023-12-02 08:22:16,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:16,963 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 51 treesize of output 41 [2023-12-02 08:22:17,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:17,284 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 51 treesize of output 41 [2023-12-02 08:22:17,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:17,604 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 51 treesize of output 41 [2023-12-02 08:22:17,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:17,960 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 79 treesize of output 74 [2023-12-02 08:22:18,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:18,167 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 87 treesize of output 80 [2023-12-02 08:22:18,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:18,288 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 87 treesize of output 80 [2023-12-02 08:22:18,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:18,408 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 87 treesize of output 98 [2023-12-02 08:22:18,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:18,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 46 [2023-12-02 08:22:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 143 proven. 36 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-12-02 08:22:18,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:22:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:22:19,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:22:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410316261] [2023-12-02 08:22:19,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410316261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:22:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1470659082] [2023-12-02 08:22:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:19,620 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:22:19,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:22:19,621 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:22:19,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 08:22:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:22:21,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 08:22:21,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:22:21,229 INFO L349 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2023-12-02 08:22:21,230 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 1 case distinctions, treesize of input 21 treesize of output 24 [2023-12-02 08:22:22,324 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:22,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2023-12-02 08:22:22,960 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:22,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:23,542 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:23,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:24,154 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:24,622 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:24,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:25,179 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:25,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:25,627 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:25,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:26,083 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:26,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-02 08:22:26,716 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:26,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 55 [2023-12-02 08:22:26,952 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:26,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 58 [2023-12-02 08:22:27,073 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:27,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 58 [2023-12-02 08:22:27,307 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:27,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 74 [2023-12-02 08:22:27,658 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 08:22:27,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 38 [2023-12-02 08:22:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-02 08:22:27,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:22:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:22:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1470659082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:22:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37920241] [2023-12-02 08:22:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:22:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:22:28,308 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:22:28,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 08:22:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:22:28,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 08:22:28,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:22:28,566 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 26 treesize of output 25 [2023-12-02 08:22:28,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:28,839 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 36 treesize of output 38 [2023-12-02 08:22:29,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:29,257 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 46 treesize of output 51 [2023-12-02 08:22:29,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:29,912 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 61 treesize of output 54 [2023-12-02 08:22:30,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:30,247 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 61 treesize of output 54 [2023-12-02 08:22:30,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:30,670 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 61 treesize of output 54 [2023-12-02 08:22:31,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:31,096 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 61 treesize of output 54 [2023-12-02 08:22:31,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:31,512 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 56 treesize of output 64 [2023-12-02 08:22:32,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:32,312 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 97 treesize of output 80 [2023-12-02 08:22:32,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:32,673 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 85 treesize of output 84 [2023-12-02 08:22:32,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:32,804 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 85 treesize of output 84 [2023-12-02 08:22:32,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:32,940 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 85 treesize of output 93 [2023-12-02 08:22:33,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:33,424 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 103 treesize of output 51 [2023-12-02 08:22:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 255 proven. 36 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-02 08:22:33,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:22:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:22:34,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37920241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:22:34,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:22:34,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 11, 7, 13, 7] total 27 [2023-12-02 08:22:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202120582] [2023-12-02 08:22:34,049 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:22:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 08:22:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:22:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 08:22:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-12-02 08:22:34,051 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand has 27 states, 24 states have (on average 8.333333333333334) internal successors, (200), 26 states have internal predecessors, (200), 11 states have call successors, (49), 7 states have call predecessors, (49), 10 states have return successors, (49), 9 states have call predecessors, (49), 11 states have call successors, (49) [2023-12-02 08:22:41,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:22:45,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:22:51,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:22:54,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:22:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:22:57,671 INFO L93 Difference]: Finished difference Result 344 states and 440 transitions. [2023-12-02 08:22:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 08:22:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 8.333333333333334) internal successors, (200), 26 states have internal predecessors, (200), 11 states have call successors, (49), 7 states have call predecessors, (49), 10 states have return successors, (49), 9 states have call predecessors, (49), 11 states have call successors, (49) Word has length 126 [2023-12-02 08:22:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:22:57,674 INFO L225 Difference]: With dead ends: 344 [2023-12-02 08:22:57,674 INFO L226 Difference]: Without dead ends: 187 [2023-12-02 08:22:57,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 717 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 08:22:57,676 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 547 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:22:57,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 459 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2023-12-02 08:22:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-02 08:22:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 117. [2023-12-02 08:22:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 97 states have internal predecessors, (121), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:22:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2023-12-02 08:22:57,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 126 [2023-12-02 08:22:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:22:57,689 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2023-12-02 08:22:57,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 8.333333333333334) internal successors, (200), 26 states have internal predecessors, (200), 11 states have call successors, (49), 7 states have call predecessors, (49), 10 states have return successors, (49), 9 states have call predecessors, (49), 11 states have call successors, (49) [2023-12-02 08:22:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2023-12-02 08:22:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 08:22:57,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:22:57,690 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:57,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 08:22:57,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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)] Forceful destruction successful, exit code 0 [2023-12-02 08:22:58,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 08:22:58,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:22:58,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:22:58,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:22:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2127112224, now seen corresponding path program 1 times [2023-12-02 08:22:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:22:58,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282058446] [2023-12-02 08:22:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:58,292 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 08:22:58,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:22:58,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:58,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:22:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:22:58,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 08:22:58,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:22:58,766 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 08:22:58,772 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 21 treesize of output 21 [2023-12-02 08:22:58,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:58,818 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 37 treesize of output 24 [2023-12-02 08:22:58,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:22:58,848 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 37 treesize of output 42 [2023-12-02 08:22:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:22:59,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:22:59,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:22:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282058446] [2023-12-02 08:22:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282058446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:22:59,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:22:59,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 08:22:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507121048] [2023-12-02 08:22:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:22:59,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:22:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:22:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:22:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:22:59,099 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:23:04,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:23:06,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:23:08,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:23:12,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:12,417 INFO L93 Difference]: Finished difference Result 386 states and 488 transitions. [2023-12-02 08:23:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 08:23:12,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 126 [2023-12-02 08:23:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:12,421 INFO L225 Difference]: With dead ends: 386 [2023-12-02 08:23:12,421 INFO L226 Difference]: Without dead ends: 270 [2023-12-02 08:23:12,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-02 08:23:12,422 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 249 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:12,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 812 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 422 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 08:23:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-02 08:23:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 120. [2023-12-02 08:23:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:23:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 152 transitions. [2023-12-02 08:23:12,446 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 152 transitions. Word has length 126 [2023-12-02 08:23:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:12,446 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 152 transitions. [2023-12-02 08:23:12,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:23:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 152 transitions. [2023-12-02 08:23:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:23:12,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:12,448 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:12,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:12,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:12,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash -155094179, now seen corresponding path program 1 times [2023-12-02 08:23:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222299572] [2023-12-02 08:23:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:12,649 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 08:23:12,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:12,650 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:12,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:13,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 08:23:13,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:13,112 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 08:23:13,264 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 26 treesize of output 25 [2023-12-02 08:23:13,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:13,540 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 36 treesize of output 38 [2023-12-02 08:23:13,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:13,964 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 51 treesize of output 41 [2023-12-02 08:23:14,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:14,232 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 51 treesize of output 41 [2023-12-02 08:23:14,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:14,581 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 51 treesize of output 41 [2023-12-02 08:23:14,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:14,891 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 51 treesize of output 41 [2023-12-02 08:23:15,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:15,189 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 46 treesize of output 51 [2023-12-02 08:23:15,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:15,759 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 54 [2023-12-02 08:23:15,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:15,816 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 61 treesize of output 54 [2023-12-02 08:23:15,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:15,900 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 61 treesize of output 54 [2023-12-02 08:23:16,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:16,016 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 69 treesize of output 33 [2023-12-02 08:23:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 30 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-02 08:23:16,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:23:16,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:16,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222299572] [2023-12-02 08:23:16,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222299572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:16,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [751758476] [2023-12-02 08:23:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:16,816 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:16,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:16,817 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:16,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 08:23:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:18,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 08:23:18,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:18,467 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 15 treesize of output 1 [2023-12-02 08:23:18,878 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 25 treesize of output 13 [2023-12-02 08:23:19,068 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 22 treesize of output 21 [2023-12-02 08:23:19,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:19,458 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:23:19,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:19,665 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:23:19,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:19,921 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:23:20,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:20,189 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:23:20,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:20,452 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 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-02 08:23:20,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 46 [2023-12-02 08:23:21,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:21,167 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 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-02 08:23:21,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:21,262 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 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-02 08:23:21,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:21,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2023-12-02 08:23:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 30 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-02 08:23:21,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:23:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [751758476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497568059] [2023-12-02 08:23:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:21,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:23:21,951 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:23:21,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 08:23:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:22,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 08:23:22,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:22,226 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 31 treesize of output 15 [2023-12-02 08:23:22,325 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 31 treesize of output 15 [2023-12-02 08:23:22,422 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 31 treesize of output 15 [2023-12-02 08:23:22,502 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 31 treesize of output 15 [2023-12-02 08:23:22,597 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 31 treesize of output 15 [2023-12-02 08:23:22,691 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 31 treesize of output 15 [2023-12-02 08:23:22,786 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 31 treesize of output 15 [2023-12-02 08:23:22,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:22,898 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 37 [2023-12-02 08:23:23,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:23,061 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 08:23:23,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:23,110 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 08:23:23,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:23,198 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 58 treesize of output 28 [2023-12-02 08:23:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 139 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-02 08:23:23,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:23:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497568059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:23,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:23:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 10, 7, 8, 7] total 22 [2023-12-02 08:23:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130705079] [2023-12-02 08:23:23,787 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:23:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 08:23:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 08:23:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-12-02 08:23:23,789 INFO L87 Difference]: Start difference. First operand 120 states and 152 transitions. Second operand has 22 states, 19 states have (on average 9.31578947368421) internal successors, (177), 22 states have internal predecessors, (177), 12 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (49), 9 states have call predecessors, (49), 12 states have call successors, (49) [2023-12-02 08:23:28,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:23:32,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:23:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:37,105 INFO L93 Difference]: Finished difference Result 258 states and 323 transitions. [2023-12-02 08:23:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 08:23:37,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 9.31578947368421) internal successors, (177), 22 states have internal predecessors, (177), 12 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (49), 9 states have call predecessors, (49), 12 states have call successors, (49) Word has length 128 [2023-12-02 08:23:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:37,107 INFO L225 Difference]: With dead ends: 258 [2023-12-02 08:23:37,107 INFO L226 Difference]: Without dead ends: 139 [2023-12-02 08:23:37,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 743 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 08:23:37,108 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 345 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:37,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 346 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2023-12-02 08:23:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-02 08:23:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2023-12-02 08:23:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.23) internal successors, (123), 100 states have internal predecessors, (123), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:23:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2023-12-02 08:23:37,130 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 128 [2023-12-02 08:23:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:37,130 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2023-12-02 08:23:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 9.31578947368421) internal successors, (177), 22 states have internal predecessors, (177), 12 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (49), 9 states have call predecessors, (49), 12 states have call successors, (49) [2023-12-02 08:23:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2023-12-02 08:23:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:23:37,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:37,132 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:37,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:37,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 08:23:37,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 08:23:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:37,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:23:37,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2145728411, now seen corresponding path program 1 times [2023-12-02 08:23:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032789654] [2023-12-02 08:23:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:37,734 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 08:23:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:37,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:23:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:38,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 08:23:38,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:38,212 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 08:23:38,354 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 26 treesize of output 25 [2023-12-02 08:23:39,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:39,558 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 63 treesize of output 38 [2023-12-02 08:23:39,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:39,974 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 63 treesize of output 38 [2023-12-02 08:23:40,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:40,388 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 63 treesize of output 38 [2023-12-02 08:23:40,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:40,903 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 63 treesize of output 38 [2023-12-02 08:23:41,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:41,319 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 58 treesize of output 48 [2023-12-02 08:23:42,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:42,018 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 99 treesize of output 64 [2023-12-02 08:23:42,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:42,264 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 87 treesize of output 68 [2023-12-02 08:23:42,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:42,396 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 87 treesize of output 68 [2023-12-02 08:23:43,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:43,295 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 80 treesize of output 76 [2023-12-02 08:23:43,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:43,639 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 120 treesize of output 60 [2023-12-02 08:23:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 237 proven. 54 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-02 08:23:43,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:23:48,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032789654] [2023-12-02 08:23:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032789654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1018068697] [2023-12-02 08:23:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:48,636 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:48,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:48,637 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:48,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 08:23:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:50,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-02 08:23:50,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:50,456 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 12 treesize of output 8 [2023-12-02 08:23:51,696 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 30 treesize of output 25 [2023-12-02 08:23:54,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:54,657 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 1 case distinctions, treesize of input 59 treesize of output 38 [2023-12-02 08:23:55,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:55,351 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 1 case distinctions, treesize of input 59 treesize of output 38 [2023-12-02 08:23:56,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:56,126 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 1 case distinctions, treesize of input 59 treesize of output 38 [2023-12-02 08:23:56,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:56,626 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 1 case distinctions, treesize of input 59 treesize of output 38 [2023-12-02 08:23:57,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:57,384 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 1 case distinctions, treesize of input 56 treesize of output 46 [2023-12-02 08:23:58,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:58,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 60 [2023-12-02 08:23:58,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:58,839 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 6 case distinctions, treesize of input 79 treesize of output 64 [2023-12-02 08:23:59,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:59,277 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 6 case distinctions, treesize of input 79 treesize of output 64 [2023-12-02 08:24:00,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:00,698 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 6 case distinctions, treesize of input 76 treesize of output 72 [2023-12-02 08:24:01,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:01,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 49 [2023-12-02 08:24:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 257 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 08:24:01,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:24:03,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1018068697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:03,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398319216] [2023-12-02 08:24:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:03,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:24:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:24:03,602 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:24:03,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 08:24:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:03,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 08:24:03,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:03,912 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 31 treesize of output 15 [2023-12-02 08:24:06,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:06,201 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 53 treesize of output 34 [2023-12-02 08:24:06,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:06,434 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 53 treesize of output 34 [2023-12-02 08:24:06,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:06,714 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 53 treesize of output 34 [2023-12-02 08:24:07,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:07,006 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 53 treesize of output 34 [2023-12-02 08:24:07,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:07,281 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 53 treesize of output 34 [2023-12-02 08:24:07,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:07,579 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 75 treesize of output 34 [2023-12-02 08:24:07,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:07,613 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 53 treesize of output 34 [2023-12-02 08:24:07,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:07,679 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 53 treesize of output 34 [2023-12-02 08:24:08,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:08,416 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 46 treesize of output 42 [2023-12-02 08:24:08,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:08,762 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 86 treesize of output 44 [2023-12-02 08:24:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 184 proven. 84 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-02 08:24:08,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:24:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398319216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:11,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:24:11,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 23, 19, 19, 19] total 68 [2023-12-02 08:24:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894273658] [2023-12-02 08:24:11,137 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:24:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-02 08:24:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:24:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-02 08:24:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=3747, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 08:24:11,143 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 68 states, 57 states have (on average 4.175438596491228) internal successors, (238), 60 states have internal predecessors, (238), 20 states have call successors, (45), 14 states have call predecessors, (45), 19 states have return successors, (46), 15 states have call predecessors, (46), 20 states have call successors, (46) [2023-12-02 08:24:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:24:36,052 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2023-12-02 08:24:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 08:24:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 57 states have (on average 4.175438596491228) internal successors, (238), 60 states have internal predecessors, (238), 20 states have call successors, (45), 14 states have call predecessors, (45), 19 states have return successors, (46), 15 states have call predecessors, (46), 20 states have call successors, (46) Word has length 128 [2023-12-02 08:24:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:24:36,055 INFO L225 Difference]: With dead ends: 300 [2023-12-02 08:24:36,055 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 08:24:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 685 SyntacticMatches, 11 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3372 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=1592, Invalid=7150, Unknown=0, NotChecked=0, Total=8742 [2023-12-02 08:24:36,060 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 274 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:24:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1022 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 08:24:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 08:24:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 126. [2023-12-02 08:24:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 104 states have internal predecessors, (126), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:24:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2023-12-02 08:24:36,086 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 128 [2023-12-02 08:24:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:24:36,087 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2023-12-02 08:24:36,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 57 states have (on average 4.175438596491228) internal successors, (238), 60 states have internal predecessors, (238), 20 states have call successors, (45), 14 states have call predecessors, (45), 19 states have return successors, (46), 15 states have call predecessors, (46), 20 states have call successors, (46) [2023-12-02 08:24:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2023-12-02 08:24:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:24:36,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:24:36,088 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:36,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 08:24:36,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:24:36,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 08:24:36,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:24:36,689 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:24:36,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:24:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -18606499, now seen corresponding path program 1 times [2023-12-02 08:24:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:24:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592369054] [2023-12-02 08:24:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:36,690 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 08:24:36,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:24:36,691 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:24:36,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:24:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:37,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 08:24:37,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:37,190 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 08:24:37,327 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 26 treesize of output 25 [2023-12-02 08:24:37,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:37,633 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 41 treesize of output 28 [2023-12-02 08:24:37,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:37,869 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 41 treesize of output 28 [2023-12-02 08:24:38,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:38,045 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 41 treesize of output 28 [2023-12-02 08:24:38,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:38,251 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 41 treesize of output 28 [2023-12-02 08:24:38,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:38,458 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 41 treesize of output 28 [2023-12-02 08:24:38,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:38,666 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 41 treesize of output 28 [2023-12-02 08:24:38,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:38,905 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 69 treesize of output 61 [2023-12-02 08:24:39,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:39,068 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 77 treesize of output 67 [2023-12-02 08:24:39,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:39,164 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 77 treesize of output 67 [2023-12-02 08:24:39,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:39,255 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 77 treesize of output 85 [2023-12-02 08:24:39,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:39,563 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 100 treesize of output 42 [2023-12-02 08:24:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 139 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-02 08:24:39,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:24:40,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:24:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592369054] [2023-12-02 08:24:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592369054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1282585652] [2023-12-02 08:24:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:40,374 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:24:40,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:24:40,375 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:24:40,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 08:24:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:41,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 08:24:41,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:42,052 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 15 treesize of output 1 [2023-12-02 08:24:42,486 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 25 treesize of output 13 [2023-12-02 08:24:42,660 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 22 treesize of output 21 [2023-12-02 08:24:43,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:43,056 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:43,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:43,266 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:43,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:43,504 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:43,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:43,737 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:43,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:43,986 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:44,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:44,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 24 [2023-12-02 08:24:44,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:44,294 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:44,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:44,347 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 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 08:24:44,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:44,406 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 1 case distinctions, treesize of input 35 treesize of output 33 [2023-12-02 08:24:44,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:44,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31 [2023-12-02 08:24:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 203 proven. 30 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-12-02 08:24:44,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:24:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1282585652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296865143] [2023-12-02 08:24:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:24:45,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:24:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:24:45,265 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:24:45,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 08:24:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:24:45,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 08:24:45,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:45,533 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 31 treesize of output 15 [2023-12-02 08:24:45,638 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 31 treesize of output 15 [2023-12-02 08:24:45,751 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 31 treesize of output 15 [2023-12-02 08:24:45,831 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 31 treesize of output 15 [2023-12-02 08:24:45,926 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 31 treesize of output 15 [2023-12-02 08:24:46,013 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 31 treesize of output 15 [2023-12-02 08:24:46,100 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 31 treesize of output 15 [2023-12-02 08:24:46,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:46,207 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 55 treesize of output 35 [2023-12-02 08:24:46,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:46,357 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 48 treesize of output 38 [2023-12-02 08:24:46,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:46,405 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 48 treesize of output 38 [2023-12-02 08:24:46,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:46,454 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 48 treesize of output 56 [2023-12-02 08:24:46,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:24:46,718 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 71 treesize of output 31 [2023-12-02 08:24:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 139 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-02 08:24:46,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-02 08:24:47,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296865143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:47,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:24:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 9, 7, 9, 7] total 22 [2023-12-02 08:24:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440336825] [2023-12-02 08:24:47,323 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:24:47,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 08:24:47,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:24:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 08:24:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-12-02 08:24:47,325 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand has 22 states, 19 states have (on average 9.157894736842104) internal successors, (174), 22 states have internal predecessors, (174), 9 states have call successors, (49), 6 states have call predecessors, (49), 9 states have return successors, (49), 6 states have call predecessors, (49), 9 states have call successors, (49) [2023-12-02 08:24:54,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:24:58,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:25:00,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:25:02,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:25:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:25:07,851 INFO L93 Difference]: Finished difference Result 319 states and 387 transitions. [2023-12-02 08:25:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 08:25:07,852 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 9.157894736842104) internal successors, (174), 22 states have internal predecessors, (174), 9 states have call successors, (49), 6 states have call predecessors, (49), 9 states have return successors, (49), 6 states have call predecessors, (49), 9 states have call successors, (49) Word has length 128 [2023-12-02 08:25:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:25:07,854 INFO L225 Difference]: With dead ends: 319 [2023-12-02 08:25:07,854 INFO L226 Difference]: Without dead ends: 194 [2023-12-02 08:25:07,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 743 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=540, Invalid=1530, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 08:25:07,856 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 481 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:25:07,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 418 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 08:25:07,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-02 08:25:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 126. [2023-12-02 08:25:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 104 states have internal predecessors, (125), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:25:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2023-12-02 08:25:07,884 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 128 [2023-12-02 08:25:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:25:07,884 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2023-12-02 08:25:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 9.157894736842104) internal successors, (174), 22 states have internal predecessors, (174), 9 states have call successors, (49), 6 states have call predecessors, (49), 9 states have return successors, (49), 6 states have call predecessors, (49), 9 states have call successors, (49) [2023-12-02 08:25:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2023-12-02 08:25:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:25:07,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:25:07,885 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:07,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 08:25:08,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 08:25:08,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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)] Ended with exit code 0 [2023-12-02 08:25:08,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:25:08,486 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:25:08,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:25:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1039674853, now seen corresponding path program 1 times [2023-12-02 08:25:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:25:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805406556] [2023-12-02 08:25:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:08,487 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 08:25:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:25:08,488 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:25:08,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (28)] Waiting until timeout for monitored process [2023-12-02 08:25:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:08,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-02 08:25:08,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:25:08,948 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 08:25:09,099 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 31 treesize of output 15 [2023-12-02 08:25:10,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:10,001 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 53 treesize of output 34 [2023-12-02 08:25:10,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:10,241 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 53 treesize of output 34 [2023-12-02 08:25:10,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:10,533 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 53 treesize of output 34 [2023-12-02 08:25:10,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:10,834 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 53 treesize of output 34 [2023-12-02 08:25:11,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:11,133 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 48 treesize of output 44 [2023-12-02 08:25:11,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:11,686 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 91 treesize of output 71 [2023-12-02 08:25:11,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:11,935 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 89 treesize of output 79 [2023-12-02 08:25:12,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:12,065 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 89 treesize of output 79 [2023-12-02 08:25:12,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:12,196 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 89 treesize of output 88 [2023-12-02 08:25:12,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:12,903 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 120 treesize of output 58 [2023-12-02 08:25:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 237 proven. 54 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-02 08:25:13,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:25:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:25:18,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:25:18,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805406556] [2023-12-02 08:25:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805406556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:25:18,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [840852488] [2023-12-02 08:25:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:18,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:25:18,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:25:18,670 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:25:18,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 08:25:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:20,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 08:25:20,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:25:20,569 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 15 treesize of output 1 [2023-12-02 08:25:21,437 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 25 treesize of output 13 [2023-12-02 08:25:23,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:23,534 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 1 case distinctions, treesize of input 43 treesize of output 30 [2023-12-02 08:25:23,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:23,813 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 1 case distinctions, treesize of input 43 treesize of output 30 [2023-12-02 08:25:24,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:24,142 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 1 case distinctions, treesize of input 43 treesize of output 30 [2023-12-02 08:25:24,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:24,474 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 1 case distinctions, treesize of input 43 treesize of output 30 [2023-12-02 08:25:24,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:24,819 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 1 case distinctions, treesize of input 43 treesize of output 30 [2023-12-02 08:25:25,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:25,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 46 [2023-12-02 08:25:25,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:25,505 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 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-02 08:25:25,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:25,609 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 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-02 08:25:25,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:25,691 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 6 case distinctions, treesize of input 58 treesize of output 58 [2023-12-02 08:25:26,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:26,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 45 [2023-12-02 08:25:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 205 proven. 54 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-02 08:25:26,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:25:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:25:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [840852488] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:25:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468895276] [2023-12-02 08:25:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:25:29,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:25:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:25:29,141 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:25:29,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 08:25:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:25:29,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 08:25:29,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:25:29,453 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 31 treesize of output 15 [2023-12-02 08:25:29,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:29,706 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 53 treesize of output 34 [2023-12-02 08:25:29,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:29,936 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 53 treesize of output 34 [2023-12-02 08:25:30,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:30,221 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 53 treesize of output 34 [2023-12-02 08:25:30,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:30,515 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 53 treesize of output 34 [2023-12-02 08:25:30,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:30,821 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 53 treesize of output 34 [2023-12-02 08:25:31,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:31,151 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 77 treesize of output 54 [2023-12-02 08:25:31,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:31,520 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 70 treesize of output 57 [2023-12-02 08:25:31,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:31,616 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 70 treesize of output 57 [2023-12-02 08:25:31,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:31,709 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 70 treesize of output 66 [2023-12-02 08:25:32,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:25:32,721 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 101 treesize of output 45 [2023-12-02 08:25:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 184 proven. 84 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-02 08:25:32,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:25:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 48 proven. 60 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 08:25:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468895276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:25:35,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:25:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 21, 20, 21, 20] total 57 [2023-12-02 08:25:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036521921] [2023-12-02 08:25:35,403 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:25:35,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-02 08:25:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:25:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-02 08:25:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2655, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 08:25:35,409 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 57 states, 48 states have (on average 4.0625) internal successors, (195), 52 states have internal predecessors, (195), 15 states have call successors, (39), 9 states have call predecessors, (39), 14 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2023-12-02 08:25:44,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:25:48,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:26:00,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:26:02,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:26:04,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:26:08,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 08:26:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:12,952 INFO L93 Difference]: Finished difference Result 359 states and 433 transitions. [2023-12-02 08:26:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 08:26:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 48 states have (on average 4.0625) internal successors, (195), 52 states have internal predecessors, (195), 15 states have call successors, (39), 9 states have call predecessors, (39), 14 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) Word has length 128 [2023-12-02 08:26:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:12,956 INFO L225 Difference]: With dead ends: 359 [2023-12-02 08:26:12,956 INFO L226 Difference]: Without dead ends: 234 [2023-12-02 08:26:12,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 705 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=1439, Invalid=5701, Unknown=0, NotChecked=0, Total=7140 [2023-12-02 08:26:12,961 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 829 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 223 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:12,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1066 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2261 Invalid, 2 Unknown, 0 Unchecked, 32.8s Time] [2023-12-02 08:26:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-02 08:26:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 132. [2023-12-02 08:26:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.2) internal successors, (132), 110 states have internal predecessors, (132), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2023-12-02 08:26:13,003 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 128 [2023-12-02 08:26:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2023-12-02 08:26:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 48 states have (on average 4.0625) internal successors, (195), 52 states have internal predecessors, (195), 15 states have call successors, (39), 9 states have call predecessors, (39), 14 states have return successors, (40), 11 states have call predecessors, (40), 15 states have call successors, (40) [2023-12-02 08:26:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2023-12-02 08:26:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:13,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:13,006 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:13,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (28)] Forceful destruction successful, exit code 0 [2023-12-02 08:26:13,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-02 08:26:13,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 08:26:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:26:13,607 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:13,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1864694629, now seen corresponding path program 1 times [2023-12-02 08:26:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531001836] [2023-12-02 08:26:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:13,608 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 08:26:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:13,609 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:13,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (31)] Waiting until timeout for monitored process [2023-12-02 08:26:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:14,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:26:14,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:14,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 9 [2023-12-02 08:26:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:26:14,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:26:14,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531001836] [2023-12-02 08:26:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531001836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:14,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:14,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:26:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186244919] [2023-12-02 08:26:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:26:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:26:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:26:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:26:14,067 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:14,482 INFO L93 Difference]: Finished difference Result 263 states and 318 transitions. [2023-12-02 08:26:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:26:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:26:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:14,484 INFO L225 Difference]: With dead ends: 263 [2023-12-02 08:26:14,484 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 08:26:14,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:26:14,485 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:14,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 221 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 08:26:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 08:26:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2023-12-02 08:26:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.180952380952381) internal successors, (124), 105 states have internal predecessors, (124), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2023-12-02 08:26:14,510 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 128 [2023-12-02 08:26:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:14,511 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2023-12-02 08:26:14,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2023-12-02 08:26:14,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:14,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:14,512 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:14,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (31)] Ended with exit code 0 [2023-12-02 08:26:14,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:14,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:14,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:14,713 INFO L85 PathProgramCache]: Analyzing trace with hash 873532105, now seen corresponding path program 1 times [2023-12-02 08:26:14,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:14,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105435796] [2023-12-02 08:26:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:14,713 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 08:26:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:14,714 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:14,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (32)] Waiting until timeout for monitored process [2023-12-02 08:26:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:15,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 08:26:15,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:15,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:15,529 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 37 treesize of output 13 [2023-12-02 08:26:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:26:15,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:26:15,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105435796] [2023-12-02 08:26:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105435796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:15,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:15,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 08:26:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153141511] [2023-12-02 08:26:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:15,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:26:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:26:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:26:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:26:15,602 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:19,302 INFO L93 Difference]: Finished difference Result 258 states and 309 transitions. [2023-12-02 08:26:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 08:26:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:26:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:19,304 INFO L225 Difference]: With dead ends: 258 [2023-12-02 08:26:19,304 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 08:26:19,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:26:19,305 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 40 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:19,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 398 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 08:26:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 08:26:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2023-12-02 08:26:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 105 states have internal predecessors, (123), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2023-12-02 08:26:19,343 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 128 [2023-12-02 08:26:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:19,343 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2023-12-02 08:26:19,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2023-12-02 08:26:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:19,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:19,344 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:19,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (32)] Forceful destruction successful, exit code 0 [2023-12-02 08:26:19,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:19,545 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:19,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1574596683, now seen corresponding path program 1 times [2023-12-02 08:26:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:19,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568686289] [2023-12-02 08:26:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:19,546 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 08:26:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:19,547 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:19,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (33)] Waiting until timeout for monitored process [2023-12-02 08:26:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:20,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:26:20,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:20,939 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 08:26:20,946 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 21 treesize of output 21 [2023-12-02 08:26:20,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:20,981 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 37 treesize of output 13 [2023-12-02 08:26:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:26:21,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:26:21,032 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:21,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568686289] [2023-12-02 08:26:21,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568686289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:21,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:21,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:26:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100282749] [2023-12-02 08:26:21,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:26:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:26:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:26:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:26:21,034 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:23,527 INFO L93 Difference]: Finished difference Result 330 states and 392 transitions. [2023-12-02 08:26:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:26:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:26:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:23,531 INFO L225 Difference]: With dead ends: 330 [2023-12-02 08:26:23,531 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 08:26:23,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:26:23,532 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 100 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:23,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 326 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 08:26:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 08:26:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2023-12-02 08:26:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.161904761904762) internal successors, (122), 105 states have internal predecessors, (122), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2023-12-02 08:26:23,558 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 128 [2023-12-02 08:26:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:23,559 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2023-12-02 08:26:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2023-12-02 08:26:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:23,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:23,560 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:23,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (33)] Ended with exit code 0 [2023-12-02 08:26:23,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:23,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:23,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1793451401, now seen corresponding path program 1 times [2023-12-02 08:26:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:23,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634547923] [2023-12-02 08:26:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:23,762 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 08:26:23,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:23,762 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:23,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (34)] Waiting until timeout for monitored process [2023-12-02 08:26:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:24,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 08:26:24,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:24,365 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 47 treesize of output 34 [2023-12-02 08:26:24,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:24,416 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 56 treesize of output 40 [2023-12-02 08:26:24,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:24,460 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 56 treesize of output 40 [2023-12-02 08:26:24,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:24,509 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 56 treesize of output 58 [2023-12-02 08:26:24,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:24,999 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 93 treesize of output 35 [2023-12-02 08:26:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:26:25,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:26:25,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634547923] [2023-12-02 08:26:25,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634547923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:25,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 08:26:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236696255] [2023-12-02 08:26:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:25,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:26:25,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:26:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:26:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:26:25,067 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:29,971 INFO L93 Difference]: Finished difference Result 376 states and 443 transitions. [2023-12-02 08:26:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 08:26:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:26:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:29,974 INFO L225 Difference]: With dead ends: 376 [2023-12-02 08:26:29,974 INFO L226 Difference]: Without dead ends: 250 [2023-12-02 08:26:29,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:26:29,976 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 160 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:29,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 473 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 08:26:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-02 08:26:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 129. [2023-12-02 08:26:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.158878504672897) internal successors, (124), 107 states have internal predecessors, (124), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2023-12-02 08:26:30,010 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 128 [2023-12-02 08:26:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:30,011 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2023-12-02 08:26:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2023-12-02 08:26:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:30,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:30,012 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:30,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (34)] Ended with exit code 0 [2023-12-02 08:26:30,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:30,212 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:30,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1793391819, now seen corresponding path program 1 times [2023-12-02 08:26:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:30,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369174618] [2023-12-02 08:26:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:30,213 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 08:26:30,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:30,214 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (35)] Waiting until timeout for monitored process [2023-12-02 08:26:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:30,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 08:26:30,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:30,804 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 08:26:30,811 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 47 treesize of output 34 [2023-12-02 08:26:30,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:30,867 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 56 treesize of output 40 [2023-12-02 08:26:30,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:30,920 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 56 treesize of output 40 [2023-12-02 08:26:30,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:30,968 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 56 treesize of output 58 [2023-12-02 08:26:31,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:31,732 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 97 treesize of output 39 [2023-12-02 08:26:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:26:31,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:26:31,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369174618] [2023-12-02 08:26:31,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369174618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:31,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:31,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 08:26:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849814209] [2023-12-02 08:26:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:31,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 08:26:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:26:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 08:26:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:26:31,825 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:37,219 INFO L93 Difference]: Finished difference Result 255 states and 298 transitions. [2023-12-02 08:26:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 08:26:37,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:26:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:37,223 INFO L225 Difference]: With dead ends: 255 [2023-12-02 08:26:37,223 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 08:26:37,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:26:37,224 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 158 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:37,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 504 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 08:26:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 08:26:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 131. [2023-12-02 08:26:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 109 states have internal predecessors, (126), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:26:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2023-12-02 08:26:37,253 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 128 [2023-12-02 08:26:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:37,253 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2023-12-02 08:26:37,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:26:37,253 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2023-12-02 08:26:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:26:37,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:37,254 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:37,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (35)] Ended with exit code 0 [2023-12-02 08:26:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:37,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:37,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1850709703, now seen corresponding path program 1 times [2023-12-02 08:26:37,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:26:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043999029] [2023-12-02 08:26:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:37,456 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 08:26:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:26:37,457 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:26:37,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (36)] Waiting until timeout for monitored process [2023-12-02 08:26:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:38,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 08:26:38,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:38,512 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 08:26:39,371 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 78 treesize of output 32 [2023-12-02 08:26:39,581 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 78 treesize of output 32 [2023-12-02 08:26:39,787 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 73 treesize of output 42 [2023-12-02 08:26:40,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:40,259 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 167 treesize of output 102 [2023-12-02 08:26:40,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:40,530 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 175 treesize of output 99 [2023-12-02 08:26:40,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:40,787 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 175 treesize of output 99 [2023-12-02 08:26:41,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:41,060 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 175 treesize of output 117 [2023-12-02 08:26:42,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:42,291 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 270 treesize of output 98 [2023-12-02 08:26:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-02 08:26:42,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:26:42,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:26:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043999029] [2023-12-02 08:26:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043999029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:26:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1650484562] [2023-12-02 08:26:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:42,896 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:26:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:26:42,897 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:26:42,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-02 08:26:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:45,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 08:26:45,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:47,127 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 15 treesize of output 1 [2023-12-02 08:26:48,355 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 62 treesize of output 30 [2023-12-02 08:26:52,475 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 108 treesize of output 59 [2023-12-02 08:26:58,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:26:58,709 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 3 case distinctions, treesize of input 151 treesize of output 96 [2023-12-02 08:27:00,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:00,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 126 [2023-12-02 08:27:01,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:01,566 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 10 case distinctions, treesize of input 201 treesize of output 121 [2023-12-02 08:27:01,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:01,814 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 10 case distinctions, treesize of input 201 treesize of output 121 [2023-12-02 08:27:02,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:02,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 137 [2023-12-02 08:27:16,156 WARN L293 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:27:30,054 WARN L293 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:27:41,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:27:41,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 417 treesize of output 189 [2023-12-02 08:27:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 204 proven. 12 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-02 08:27:48,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:28:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 08:28:30,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1650484562] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 08:28:30,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:28:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 31] total 48 [2023-12-02 08:28:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196554250] [2023-12-02 08:28:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:28:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 08:28:30,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:28:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 08:28:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 08:28:30,946 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:28:40,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:45,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:47,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:52,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:54,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:57,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:28:59,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:01,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:03,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:04,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:05,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:06,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:11,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:12,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:14,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:15,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:19,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:21,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:23,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:26,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:27,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:28,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:34,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:36,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:43,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:45,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:46,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:48,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:50,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:29:52,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:00,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:16,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:19,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:21,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:23,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:26,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:32,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:39,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:43,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 08:30:44,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:44,679 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2023-12-02 08:30:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 08:30:44,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 128 [2023-12-02 08:30:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:44,682 INFO L225 Difference]: With dead ends: 334 [2023-12-02 08:30:44,682 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 08:30:44,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 354 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=507, Invalid=2685, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 08:30:44,684 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 126 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 49 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:44,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 572 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 430 Invalid, 7 Unknown, 0 Unchecked, 119.7s Time] [2023-12-02 08:30:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 08:30:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 153. [2023-12-02 08:30:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.1526717557251909) internal successors, (151), 131 states have internal predecessors, (151), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 08:30:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2023-12-02 08:30:44,712 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 128 [2023-12-02 08:30:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:44,712 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2023-12-02 08:30:44,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 08:30:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2023-12-02 08:30:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 08:30:44,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:44,714 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:44,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (36)] Ended with exit code 0 [2023-12-02 08:30:44,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-12-02 08:30:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:30:45,115 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:30:45,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1041363077, now seen corresponding path program 1 times [2023-12-02 08:30:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:30:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735993448] [2023-12-02 08:30:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:45,115 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 08:30:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:30:45,116 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 08:30:45,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a40ae4-2bcb-45ac-9dec-e0b1c322dfab/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 (38)] Waiting until timeout for monitored process