./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 7890c23c10ec8ec7c90a7fd60cc6528379567eebc90a6016927e1bc9b6376553 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:28:28,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:28:29,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:28:29,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:28:29,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:28:29,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:28:29,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:28:29,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:28:29,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:28:29,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:28:29,035 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:28:29,035 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:28:29,036 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:28:29,036 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:28:29,037 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:28:29,037 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:28:29,038 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:28:29,038 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:28:29,038 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:28:29,039 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:28:29,040 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:28:29,044 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:28:29,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:28:29,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:28:29,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:28:29,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:28:29,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:28:29,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:28:29,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:28:29,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:28:29,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:28:29,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:28:29,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:28:29,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:28:29,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:28:29,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:28:29,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:28:29,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:28:29,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:28:29,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:28:29,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:28:29,050 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:28:29,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:28:29,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:28:29,051 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:28:29,051 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:28:29,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:28:29,051 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7890c23c10ec8ec7c90a7fd60cc6528379567eebc90a6016927e1bc9b6376553 [2023-12-02 08:28:29,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:28:29,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:28:29,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:28:29,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:28:29,304 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:28:29,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i [2023-12-02 08:28:32,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:28:32,345 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:28:32,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i [2023-12-02 08:28:32,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/b53d922b2/6fd8ebb072044590b3fc63963ac7fc0a/FLAG7b87d2acc [2023-12-02 08:28:32,387 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/b53d922b2/6fd8ebb072044590b3fc63963ac7fc0a [2023-12-02 08:28:32,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:28:32,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:28:32,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:28:32,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:28:32,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:28:32,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:28:32" (1/1) ... [2023-12-02 08:28:32,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8fa2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:32, skipping insertion in model container [2023-12-02 08:28:32,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:28:32" (1/1) ... [2023-12-02 08:28:32,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:28:33,322 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:251) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:3086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2927) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:142) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1156) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:386) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2441) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 08:28:33,326 INFO L158 Benchmark]: Toolchain (without parser) took 933.85ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 99.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 08:28:33,326 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:28:33,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 931.63ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 99.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 08:28:33,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 931.63ms. Allocated memory is still 159.4MB. Free memory was 120.0MB in the beginning and 99.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 7890c23c10ec8ec7c90a7fd60cc6528379567eebc90a6016927e1bc9b6376553 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:28:35,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:28:35,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 08:28:35,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:28:35,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:28:35,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:28:35,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:28:35,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:28:35,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:28:35,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:28:35,238 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:28:35,238 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:28:35,239 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:28:35,239 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:28:35,240 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:28:35,240 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:28:35,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:28:35,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:28:35,242 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:28:35,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:28:35,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:28:35,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:28:35,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:28:35,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:28:35,245 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:28:35,246 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 08:28:35,246 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 08:28:35,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:28:35,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:28:35,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:28:35,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:28:35,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 08:28:35,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:28:35,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:28:35,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:28:35,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:28:35,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:28:35,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:28:35,250 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 08:28:35,250 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 08:28:35,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:28:35,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:28:35,251 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:28:35,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:28:35,252 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7890c23c10ec8ec7c90a7fd60cc6528379567eebc90a6016927e1bc9b6376553 [2023-12-02 08:28:35,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:28:35,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:28:35,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:28:35,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:28:35,597 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:28:35,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i [2023-12-02 08:28:38,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:28:38,686 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:28:38,686 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i [2023-12-02 08:28:38,711 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/0cadfd1bd/01e59a2425b54f10b4c6a5119cd06275/FLAG77085568e [2023-12-02 08:28:38,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/data/0cadfd1bd/01e59a2425b54f10b4c6a5119cd06275 [2023-12-02 08:28:38,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:28:38,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:28:38,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:28:38,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:28:38,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:28:38,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:28:38" (1/1) ... [2023-12-02 08:28:38,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec2ad9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:38, skipping insertion in model container [2023-12-02 08:28:38,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:28:38" (1/1) ... [2023-12-02 08:28:38,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:28:39,631 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i[71451,71464] [2023-12-02 08:28:39,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:28:39,930 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 08:28:39,958 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:28:39,988 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i[71451,71464] [2023-12-02 08:28:40,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:28:40,081 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:28:40,137 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_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/sv-benchmarks/c/neural-networks/poly_16_16_thresh_5_unsafe.c-amalgamation.i[71451,71464] [2023-12-02 08:28:40,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:28:40,436 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:28:40,437 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:28:40,437 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:28:40,437 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:28:40,443 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:28:40,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40 WrapperNode [2023-12-02 08:28:40,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:28:40,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:28:40,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:28:40,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:28:40,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,607 INFO L138 Inliner]: procedures = 779, calls = 724, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1303 [2023-12-02 08:28:40,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:28:40,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:28:40,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:28:40,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:28:40,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:28:40,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:28:40,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:28:40,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:28:40,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (1/1) ... [2023-12-02 08:28:40,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:28:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:28:40,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:28:40,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:28:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 08:28:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 08:28:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:28:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 08:28:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:28:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:28:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 08:28:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 08:28:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 08:28:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 08:28:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 08:28:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 08:28:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 08:28:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 08:28:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:28:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 08:28:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 08:28:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 08:28:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 08:28:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 08:28:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 08:28:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 08:28:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 08:28:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 08:28:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 08:28:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 08:28:41,025 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:28:41,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:29:05,459 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:29:05,594 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:29:05,594 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 08:29:05,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:05 BoogieIcfgContainer [2023-12-02 08:29:05,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:29:05,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:29:05,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:29:05,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:29:05,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:28:38" (1/3) ... [2023-12-02 08:29:05,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a588a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:05, skipping insertion in model container [2023-12-02 08:29:05,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:28:40" (2/3) ... [2023-12-02 08:29:05,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a588a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:05, skipping insertion in model container [2023-12-02 08:29:05,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:05" (3/3) ... [2023-12-02 08:29:05,603 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_16_16_thresh_5_unsafe.c-amalgamation.i [2023-12-02 08:29:05,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:29:05,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:29:05,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:29:05,684 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;@3fe8f94a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:29:05,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:29:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:29:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 08:29:05,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:05,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:05,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:29:05,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 239548369, now seen corresponding path program 1 times [2023-12-02 08:29:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:29:05,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808549449] [2023-12-02 08:29:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:05,742 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 08:29:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:29:05,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:05,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:09,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 08:29:09,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:29:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 08:29:09,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:29:09,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:29:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808549449] [2023-12-02 08:29:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808549449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:09,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:29:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739239369] [2023-12-02 08:29:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:29:09,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:29:09,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:29:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:29:09,661 INFO L87 Difference]: Start difference. First operand has 161 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 08:29:11,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:13,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:14,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:17,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:19,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:21,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:23,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:23,361 INFO L93 Difference]: Finished difference Result 320 states and 558 transitions. [2023-12-02 08:29:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:29:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 72 [2023-12-02 08:29:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:23,375 INFO L225 Difference]: With dead ends: 320 [2023-12-02 08:29:23,375 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 08:29:23,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 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 08:29:23,386 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:23,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2023-12-02 08:29:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 08:29:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 08:29:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:29:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 228 transitions. [2023-12-02 08:29:23,433 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 228 transitions. Word has length 72 [2023-12-02 08:29:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:23,433 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 228 transitions. [2023-12-02 08:29:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 08:29:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 228 transitions. [2023-12-02 08:29:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 08:29:23,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:23,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:23,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:23,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:29:23,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -727802285, now seen corresponding path program 1 times [2023-12-02 08:29:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:29:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41501216] [2023-12-02 08:29:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:23,644 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 08:29:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:29:23,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:23,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:28,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:29:28,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:29:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 08:29:29,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:29:29,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:29:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41501216] [2023-12-02 08:29:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41501216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:29,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:29:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598907439] [2023-12-02 08:29:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:29,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:29:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:29:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:29:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:29:29,127 INFO L87 Difference]: Start difference. First operand 159 states and 228 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:29:31,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:33,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:35,099 WARN L539 Checker$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 [] [2023-12-02 08:29:37,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:39,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:46,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:48,320 WARN L539 Checker$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 [] [2023-12-02 08:29:51,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:29:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:51,964 INFO L93 Difference]: Finished difference Result 320 states and 460 transitions. [2023-12-02 08:29:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:29:51,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2023-12-02 08:29:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:51,969 INFO L225 Difference]: With dead ends: 320 [2023-12-02 08:29:51,969 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 08:29:51,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:29:51,971 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 196 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:51,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 499 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 4 Unknown, 0 Unchecked, 22.7s Time] [2023-12-02 08:29:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 08:29:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 08:29:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:29:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 08:29:51,990 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 72 [2023-12-02 08:29:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:51,991 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 08:29:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:29:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 08:29:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 08:29:51,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:51,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:52,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:52,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:29:52,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 359569721, now seen corresponding path program 1 times [2023-12-02 08:29:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:29:52,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093599666] [2023-12-02 08:29:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:52,200 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 08:29:52,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:29:52,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:52,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:29:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:57,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:29:57,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:29:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 08:29:57,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:29:57,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:29:57,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093599666] [2023-12-02 08:29:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093599666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:57,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:57,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:29:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696880500] [2023-12-02 08:29:57,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:57,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:29:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:29:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:29:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:29:57,567 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:29:59,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:01,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:03,933 WARN L539 Checker$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 [] [2023-12-02 08:30:06,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:07,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:12,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:15,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:17,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:21,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:22,048 INFO L93 Difference]: Finished difference Result 332 states and 474 transitions. [2023-12-02 08:30:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:30:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 74 [2023-12-02 08:30:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:22,052 INFO L225 Difference]: With dead ends: 332 [2023-12-02 08:30:22,052 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 08:30:22,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:30:22,053 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 192 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 508 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 279 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2023-12-02 08:30:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 08:30:22,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2023-12-02 08:30:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:30:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 08:30:22,076 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 74 [2023-12-02 08:30:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:22,077 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 08:30:22,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:30:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 08:30:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 08:30:22,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:22,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:22,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:22,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:22,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:30:22,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash -227081128, now seen corresponding path program 1 times [2023-12-02 08:30:22,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:30:22,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743117071] [2023-12-02 08:30:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:22,285 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 08:30:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:30:22,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:22,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:27,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:30:27,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:30:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 08:30:27,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:30:27,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:30:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743117071] [2023-12-02 08:30:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743117071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:30:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171915410] [2023-12-02 08:30:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:30:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:30:27,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:30:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:30:27,581 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:30:28,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:30,883 WARN L539 Checker$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 [] [2023-12-02 08:30:32,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:36,081 WARN L539 Checker$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 [] [2023-12-02 08:30:40,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:41,668 WARN L539 Checker$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 [] [2023-12-02 08:30:44,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:46,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:49,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:30:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:50,742 INFO L93 Difference]: Finished difference Result 332 states and 474 transitions. [2023-12-02 08:30:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:30:50,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 81 [2023-12-02 08:30:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:50,767 INFO L225 Difference]: With dead ends: 332 [2023-12-02 08:30:50,767 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 08:30:50,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:30:50,770 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 190 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:50,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 508 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 4 Unknown, 0 Unchecked, 23.1s Time] [2023-12-02 08:30:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 08:30:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2023-12-02 08:30:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:30:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 08:30:50,791 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 81 [2023-12-02 08:30:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:50,791 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 08:30:50,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:30:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 08:30:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 08:30:50,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:50,793 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:50,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:50,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:50,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:30:50,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1363740941, now seen corresponding path program 1 times [2023-12-02 08:30:50,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:30:50,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392973201] [2023-12-02 08:30:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:50,997 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 08:30:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:30:50,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:50,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:30:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:55,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:30:55,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:30:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 08:30:56,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:30:56,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:30:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392973201] [2023-12-02 08:30:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392973201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:30:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222731316] [2023-12-02 08:30:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:30:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:30:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:30:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:30:56,259 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:30:58,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:00,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:01,923 WARN L539 Checker$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 [] [2023-12-02 08:31:04,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:13,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:15,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:17,062 WARN L539 Checker$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 [] [2023-12-02 08:31:20,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:31:20,612 INFO L93 Difference]: Finished difference Result 332 states and 474 transitions. [2023-12-02 08:31:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:31:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-02 08:31:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:31:20,615 INFO L225 Difference]: With dead ends: 332 [2023-12-02 08:31:20,615 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 08:31:20,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:31:20,617 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 314 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:31:20,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 508 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 4 Unknown, 0 Unchecked, 24.3s Time] [2023-12-02 08:31:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 08:31:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2023-12-02 08:31:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:31:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 08:31:20,634 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 80 [2023-12-02 08:31:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:31:20,635 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 08:31:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:31:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 08:31:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 08:31:20,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:31:20,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:31:20,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-02 08:31:20,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:20,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:31:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:31:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 278229593, now seen corresponding path program 1 times [2023-12-02 08:31:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:31:20,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133130518] [2023-12-02 08:31:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:31:20,841 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 08:31:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:31:20,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:20,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:31:25,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 08:31:25,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:31:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 08:31:26,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:31:26,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:31:26,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133130518] [2023-12-02 08:31:26,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133130518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:31:26,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:31:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:31:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057987086] [2023-12-02 08:31:26,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:31:26,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:31:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:31:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:31:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:31:26,516 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:31:28,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:31,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:36,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:39,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:41,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:43,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:45,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:31:47,067 INFO L93 Difference]: Finished difference Result 332 states and 474 transitions. [2023-12-02 08:31:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:31:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 82 [2023-12-02 08:31:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:31:47,091 INFO L225 Difference]: With dead ends: 332 [2023-12-02 08:31:47,091 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 08:31:47,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:31:47,092 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 355 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:31:47,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 476 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 255 Invalid, 2 Unknown, 0 Unchecked, 20.5s Time] [2023-12-02 08:31:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 08:31:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2023-12-02 08:31:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:31:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 08:31:47,107 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 82 [2023-12-02 08:31:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:31:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 08:31:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 08:31:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 08:31:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 08:31:47,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:31:47,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:31:47,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:47,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:31:47,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:31:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash -554765999, now seen corresponding path program 1 times [2023-12-02 08:31:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:31:47,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208676055] [2023-12-02 08:31:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:31:47,313 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 08:31:47,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:31:47,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:47,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:31:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:31:52,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:31:52,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:31:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 08:31:53,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:31:53,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:31:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208676055] [2023-12-02 08:31:53,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208676055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:31:53,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:31:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:31:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916375467] [2023-12-02 08:31:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:31:53,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:31:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:31:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:31:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:31:53,444 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:31:55,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:57,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:31:59,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:05,837 WARN L539 Checker$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 [] [2023-12-02 08:32:08,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:10,886 WARN L539 Checker$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 [] [2023-12-02 08:32:11,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:15,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:32:15,719 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2023-12-02 08:32:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:32:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-12-02 08:32:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:32:15,745 INFO L225 Difference]: With dead ends: 175 [2023-12-02 08:32:15,745 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 08:32:15,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:32:15,746 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 184 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:32:15,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 505 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 267 Invalid, 4 Unknown, 0 Unchecked, 22.2s Time] [2023-12-02 08:32:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 08:32:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 08:32:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (14), 13 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 08:32:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2023-12-02 08:32:15,767 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 84 [2023-12-02 08:32:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:32:15,768 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2023-12-02 08:32:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:32:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2023-12-02 08:32:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 08:32:15,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:32:15,779 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:32:15,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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)] Forceful destruction successful, exit code 0 [2023-12-02 08:32:15,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:32:15,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:32:15,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:32:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 314600752, now seen corresponding path program 1 times [2023-12-02 08:32:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:32:15,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034642196] [2023-12-02 08:32:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:32:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:32:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:32:15,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:32:15,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 08:32:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:32:21,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:32:21,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:32:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 08:32:22,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:32:22,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:32:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034642196] [2023-12-02 08:32:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034642196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:32:22,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:32:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:32:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971795216] [2023-12-02 08:32:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:32:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:32:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:32:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:32:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:32:22,125 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:32:24,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:26,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:28,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:31,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:33,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:34,525 WARN L539 Checker$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 [] [2023-12-02 08:32:37,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:39,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:42,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:44,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:45,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:48,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:50,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:32:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:32:50,816 INFO L93 Difference]: Finished difference Result 167 states and 234 transitions. [2023-12-02 08:32:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:32:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2023-12-02 08:32:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:32:50,842 INFO L225 Difference]: With dead ends: 167 [2023-12-02 08:32:50,842 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 08:32:50,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:32:50,843 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 180 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:32:50,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 503 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 260 Invalid, 7 Unknown, 0 Unchecked, 28.6s Time] [2023-12-02 08:32:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 08:32:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 08:32:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 08:32:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2023-12-02 08:32:50,865 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 90 [2023-12-02 08:32:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:32:50,866 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2023-12-02 08:32:50,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:32:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2023-12-02 08:32:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 08:32:50,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:32:50,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:32:50,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 08:32:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:32:51,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:32:51,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:32:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -166601157, now seen corresponding path program 1 times [2023-12-02 08:32:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:32:51,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582438789] [2023-12-02 08:32:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:32:51,072 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 08:32:51,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:32:51,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:32:51,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 08:32:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:32:56,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:32:56,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:32:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 08:32:57,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:32:57,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:32:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582438789] [2023-12-02 08:32:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582438789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:32:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:32:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:32:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94019430] [2023-12-02 08:32:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:32:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:32:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:32:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:32:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:32:57,237 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:32:58,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:00,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:04,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:09,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:12,429 WARN L539 Checker$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 [] [2023-12-02 08:33:14,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:17,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:33:17,602 INFO L93 Difference]: Finished difference Result 173 states and 240 transitions. [2023-12-02 08:33:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:33:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-12-02 08:33:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:33:17,628 INFO L225 Difference]: With dead ends: 173 [2023-12-02 08:33:17,628 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 08:33:17,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:33:17,629 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 181 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:33:17,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 498 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 259 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2023-12-02 08:33:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 08:33:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 08:33:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 08:33:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2023-12-02 08:33:17,650 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 85 [2023-12-02 08:33:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:33:17,650 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2023-12-02 08:33:17,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:33:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2023-12-02 08:33:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 08:33:17,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:33:17,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:33:17,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 08:33:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:17,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:33:17,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:33:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2012739232, now seen corresponding path program 1 times [2023-12-02 08:33:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:33:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781737132] [2023-12-02 08:33:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:33:17,857 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 08:33:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:33:17,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:17,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:33:23,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 2626 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:33:23,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:33:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 08:33:23,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:33:23,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:33:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781737132] [2023-12-02 08:33:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781737132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:33:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:33:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:33:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114508609] [2023-12-02 08:33:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:33:23,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:33:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:33:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:33:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:33:23,917 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:33:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:28,278 WARN L539 Checker$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 [] [2023-12-02 08:33:30,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:35,400 WARN L539 Checker$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 [] [2023-12-02 08:33:39,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:33:43,934 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2023-12-02 08:33:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:33:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2023-12-02 08:33:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:33:43,959 INFO L225 Difference]: With dead ends: 171 [2023-12-02 08:33:43,959 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 08:33:43,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:33:43,960 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 177 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:33:43,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 491 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 3 Unknown, 0 Unchecked, 20.0s Time] [2023-12-02 08:33:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 08:33:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 08:33:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 08:33:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2023-12-02 08:33:43,974 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 87 [2023-12-02 08:33:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:33:43,974 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2023-12-02 08:33:43,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:33:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2023-12-02 08:33:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 08:33:43,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:33:43,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:33:44,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:44,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:33:44,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:33:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash 560573153, now seen corresponding path program 1 times [2023-12-02 08:33:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:33:44,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617258390] [2023-12-02 08:33:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:33:44,181 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 08:33:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:33:44,181 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:33:44,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 08:33:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:33:49,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:33:49,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:33:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 08:33:50,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:33:50,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:33:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617258390] [2023-12-02 08:33:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617258390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:33:50,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:33:50,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:33:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169061589] [2023-12-02 08:33:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:33:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:33:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:33:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:33:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:33:50,329 INFO L87 Difference]: Start difference. First operand 159 states and 222 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:33:52,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:53,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:33:55,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:00,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:01,200 WARN L539 Checker$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 [] [2023-12-02 08:34:02,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:05,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:06,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:08,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:11,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:12,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:34:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:12,743 INFO L93 Difference]: Finished difference Result 169 states and 232 transitions. [2023-12-02 08:34:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:34:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2023-12-02 08:34:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:12,768 INFO L225 Difference]: With dead ends: 169 [2023-12-02 08:34:12,768 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 08:34:12,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:34:12,769 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 294 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:12,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 484 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 242 Invalid, 2 Unknown, 0 Unchecked, 22.3s Time] [2023-12-02 08:34:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 08:34:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-02 08:34:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 08:34:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 218 transitions. [2023-12-02 08:34:12,786 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 218 transitions. Word has length 88 [2023-12-02 08:34:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 218 transitions. [2023-12-02 08:34:12,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:34:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 218 transitions. [2023-12-02 08:34:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 08:34:12,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:12,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:12,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 08:34:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:34:12,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:12,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash 639000370, now seen corresponding path program 1 times [2023-12-02 08:34:12,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:34:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56317781] [2023-12-02 08:34:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:12,993 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 08:34:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:34:12,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/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 08:34:12,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93cdcc4b-4d5e-4f3d-8511-866d9c87c4b4/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 08:35:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:35:33,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-02 08:35:33,145 INFO L285 TraceCheckSpWp]: Computing forward predicates...