./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_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_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/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_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/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_2877e7d4-8120-41a9-8ea4-1277b5288888/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 420465b4160ed82ad66ee38db211a67558da31154a8d696ca661ca97b6cc589d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:31:29,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:31:29,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:31:29,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:31:29,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:31:29,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:31:29,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:31:29,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:31:29,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:31:29,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:31:29,513 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:31:29,514 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:31:29,514 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:31:29,514 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:31:29,515 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:31:29,515 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:31:29,516 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:31:29,516 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:31:29,517 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:31:29,517 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:31:29,518 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:31:29,518 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:31:29,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:31:29,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:31:29,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:31:29,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:31:29,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:31:29,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:31:29,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:31:29,523 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:31:29,523 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:31:29,523 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:31:29,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:31:29,524 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:31:29,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:31:29,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:31:29,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:31:29,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:31:29,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:31:29,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:31:29,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:31:29,526 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:31:29,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:31:29,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:31:29,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:31:29,527 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:31:29,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:31:29,527 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_2877e7d4-8120-41a9-8ea4-1277b5288888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 420465b4160ed82ad66ee38db211a67558da31154a8d696ca661ca97b6cc589d [2023-12-02 17:31:29,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:31:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:31:29,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:31:29,797 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:31:29,797 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:31:29,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 17:31:32,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:31:32,883 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:31:32,883 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 17:31:32,910 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/9620add8d/d4ca1a119a1b4c45955443a31cd60ccd/FLAG65cb84df7 [2023-12-02 17:31:32,925 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/9620add8d/d4ca1a119a1b4c45955443a31cd60ccd [2023-12-02 17:31:32,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:31:32,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:31:32,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:31:32,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:31:32,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:31:32,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:32" (1/1) ... [2023-12-02 17:31:32,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c02adc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:32, skipping insertion in model container [2023-12-02 17:31:32,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:32" (1/1) ... [2023-12-02 17:31:33,049 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:31:33,924 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 17:31:33,929 INFO L158 Benchmark]: Toolchain (without parser) took 998.82ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 85.4MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:31:33,930 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:31:33,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 996.57ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 85.4MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:31:33,932 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 151.0MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 996.57ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 85.4MB in the end (delta: 20.2MB). 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_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/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_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/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_2877e7d4-8120-41a9-8ea4-1277b5288888/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 420465b4160ed82ad66ee38db211a67558da31154a8d696ca661ca97b6cc589d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:31:35,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:31:35,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:31:35,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:31:35,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:31:35,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:31:35,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:31:35,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:31:35,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:31:35,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:31:35,801 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:31:35,802 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:31:35,802 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:31:35,803 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:31:35,803 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:31:35,804 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:31:35,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:31:35,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:31:35,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:31:35,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:31:35,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:31:35,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:31:35,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:31:35,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:31:35,808 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:31:35,809 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:31:35,809 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:31:35,810 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:31:35,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:31:35,811 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:31:35,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:31:35,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:31:35,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:31:35,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:31:35,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:31:35,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:31:35,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:31:35,813 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:31:35,813 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:31:35,814 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:31:35,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:31:35,814 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:31:35,814 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:31:35,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:31:35,815 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_2877e7d4-8120-41a9-8ea4-1277b5288888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 420465b4160ed82ad66ee38db211a67558da31154a8d696ca661ca97b6cc589d [2023-12-02 17:31:36,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:31:36,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:31:36,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:31:36,110 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:31:36,110 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:31:36,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 17:31:38,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:31:39,260 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:31:39,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 17:31:39,292 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/4d6f93ea2/b15dd366d3e94507873e5deb18935663/FLAGf2bde434e [2023-12-02 17:31:39,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/data/4d6f93ea2/b15dd366d3e94507873e5deb18935663 [2023-12-02 17:31:39,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:31:39,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:31:39,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:31:39,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:31:39,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:31:39,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:39" (1/1) ... [2023-12-02 17:31:39,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b24f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:39, skipping insertion in model container [2023-12-02 17:31:39,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:31:39" (1/1) ... [2023-12-02 17:31:39,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:31:40,477 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_2877e7d4-8120-41a9-8ea4-1277b5288888/sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i[71467,71480] [2023-12-02 17:31:40,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:31:40,817 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:31:40,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:31:40,862 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_2877e7d4-8120-41a9-8ea4-1277b5288888/sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i[71467,71480] [2023-12-02 17:31:40,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:31:40,954 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:31:40,990 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_2877e7d4-8120-41a9-8ea4-1277b5288888/sv-benchmarks/c/neural-networks/poly_8_8_8_thresh_4_unsafe.c-amalgamation.i[71467,71480] [2023-12-02 17:31:41,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:31:41,292 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:31:41,292 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:31:41,292 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:31:41,292 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:31:41,299 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:31:41,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41 WrapperNode [2023-12-02 17:31:41,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:31:41,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:31:41,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:31:41,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:31:41,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,441 INFO L138 Inliner]: procedures = 779, calls = 642, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1226 [2023-12-02 17:31:41,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:31:41,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:31:41,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:31:41,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:31:41,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:31:41,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:31:41,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:31:41,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:31:41,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (1/1) ... [2023-12-02 17:31:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:31:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:31:41,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:31:41,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:31:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 17:31:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 17:31:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:31:41,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:31:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:31:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:31:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:31:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:31:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:31:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:31:41,636 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 17:31:41,636 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 17:31:41,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:31:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 17:31:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 17:31:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 17:31:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:31:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:31:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 17:31:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 17:31:41,890 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:31:41,893 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:32:04,664 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:32:04,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:32:04,795 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 17:32:04,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:32:04 BoogieIcfgContainer [2023-12-02 17:32:04,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:32:04,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:32:04,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:32:04,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:32:04,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:31:39" (1/3) ... [2023-12-02 17:32:04,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4496fb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:32:04, skipping insertion in model container [2023-12-02 17:32:04,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:31:41" (2/3) ... [2023-12-02 17:32:04,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4496fb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:32:04, skipping insertion in model container [2023-12-02 17:32:04,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:32:04" (3/3) ... [2023-12-02 17:32:04,803 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 17:32:04,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:32:04,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:32:04,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:32:04,883 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;@49406d2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:32:04,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:32:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 17:32:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 17:32:04,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:32:04,907 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:32:04,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:32:04,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:32:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1122699388, now seen corresponding path program 1 times [2023-12-02 17:32:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:32:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657061662] [2023-12-02 17:32:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:32:04,936 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 17:32:04,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:32:04,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:04,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:32:07,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 17:32:07,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:32:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 17:32:07,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:32:07,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:32:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657061662] [2023-12-02 17:32:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657061662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:32:07,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:32:07,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:32:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602706285] [2023-12-02 17:32:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:32:07,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:32:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:32:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:32:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:32:07,979 INFO L87 Difference]: Start difference. First operand has 162 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 17:32:10,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:11,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:13,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:18,508 WARN L539 Checker$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 17:32:21,329 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 17:32:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:32:21,354 INFO L93 Difference]: Finished difference Result 322 states and 563 transitions. [2023-12-02 17:32:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:32:21,364 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 94 [2023-12-02 17:32:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:32:21,375 INFO L225 Difference]: With dead ends: 322 [2023-12-02 17:32:21,375 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 17:32:21,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 93 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 17:32:21,386 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:32:21,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2023-12-02 17:32:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 17:32:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 17:32:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 17:32:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 230 transitions. [2023-12-02 17:32:21,436 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 230 transitions. Word has length 94 [2023-12-02 17:32:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:32:21,437 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 230 transitions. [2023-12-02 17:32:21,437 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 17:32:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 230 transitions. [2023-12-02 17:32:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 17:32:21,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:32:21,444 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:32:21,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:21,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:32:21,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:32:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 239190398, now seen corresponding path program 1 times [2023-12-02 17:32:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:32:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583799222] [2023-12-02 17:32:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:32:21,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:32:21,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:32:21,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:21,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:32:26,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:32:26,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:32:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 17:32:26,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:32:26,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:32:26,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583799222] [2023-12-02 17:32:26,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583799222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:32:26,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:32:26,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:32:26,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340245319] [2023-12-02 17:32:26,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:32:26,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:32:26,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:32:26,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:32:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:32:26,640 INFO L87 Difference]: Start difference. First operand 160 states and 230 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:32:29,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:31,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:33,049 WARN L539 Checker$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 17:32:36,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:39,261 WARN L539 Checker$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 17:32:44,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:46,198 WARN L539 Checker$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 17:32:47,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:51,800 WARN L539 Checker$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 17:32:53,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:55,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:32:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:32:55,373 INFO L93 Difference]: Finished difference Result 322 states and 465 transitions. [2023-12-02 17:32:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:32:55,374 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2023-12-02 17:32:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:32:55,378 INFO L225 Difference]: With dead ends: 322 [2023-12-02 17:32:55,378 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 17:32:55,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 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 17:32:55,380 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 323 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:32:55,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 500 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 28.6s Time] [2023-12-02 17:32:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 17:32:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 17:32:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:32:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 17:32:55,400 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 94 [2023-12-02 17:32:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:32:55,401 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 17:32:55,401 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:32:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 17:32:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 17:32:55,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:32:55,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:32:55,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:55,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:32:55,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:32:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 45256858, now seen corresponding path program 1 times [2023-12-02 17:32:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:32:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599487371] [2023-12-02 17:32:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:32:55,609 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 17:32:55,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:32:55,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:55,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:32:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:32:59,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:32:59,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 17:33:00,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:00,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:33:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599487371] [2023-12-02 17:33:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599487371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:00,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:33:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672458596] [2023-12-02 17:33:00,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:00,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:33:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:00,374 INFO L87 Difference]: Start difference. First operand 166 states and 237 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:33:02,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:04,783 WARN L539 Checker$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 17:33:06,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:09,516 WARN L539 Checker$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 17:33:11,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:12,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:17,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:19,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:21,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:23,638 WARN L539 Checker$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 17:33:25,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:28,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:28,700 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 17:33:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:33:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 98 [2023-12-02 17:33:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:28,704 INFO L225 Difference]: With dead ends: 334 [2023-12-02 17:33:28,704 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 17:33:28,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 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 17:33:28,706 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 194 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:28,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 28.2s Time] [2023-12-02 17:33:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 17:33:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 17:33:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:33:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 17:33:28,722 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 98 [2023-12-02 17:33:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:28,722 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 17:33:28,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:33:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 17:33:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 17:33:28,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:28,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:33:28,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:33:28,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:33:28,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:33:28,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:33:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash -722511758, now seen corresponding path program 1 times [2023-12-02 17:33:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:33:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804447485] [2023-12-02 17:33:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:33:28,928 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 17:33:28,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:33:28,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:33:28,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:33:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:33:33,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:33:33,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:33:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 17:33:33,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:33:33,734 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:33:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804447485] [2023-12-02 17:33:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804447485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:33:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:33:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:33:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873066338] [2023-12-02 17:33:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:33:33,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:33:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:33:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:33:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:33:33,738 INFO L87 Difference]: Start difference. First operand 166 states and 237 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:33:36,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:38,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:40,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:42,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:45,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:49,452 WARN L539 Checker$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 17:33:52,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:54,362 WARN L539 Checker$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 17:33:58,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:59,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:33:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:33:59,957 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 17:33:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:33:59,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2023-12-02 17:33:59,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:33:59,962 INFO L225 Difference]: With dead ends: 334 [2023-12-02 17:33:59,962 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 17:33:59,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 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 17:33:59,964 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 316 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:33:59,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 5 Unknown, 0 Unchecked, 26.1s Time] [2023-12-02 17:33:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 17:33:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 17:33:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:33:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 17:33:59,986 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 103 [2023-12-02 17:33:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:33:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 17:33:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:33:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 17:33:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 17:33:59,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:33:59,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:00,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:00,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:00,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:00,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash -668130015, now seen corresponding path program 1 times [2023-12-02 17:34:00,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:34:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716873430] [2023-12-02 17:34:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:00,194 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 17:34:00,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:34:00,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:00,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:04,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:34:04,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 17:34:04,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:34:04,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:34:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716873430] [2023-12-02 17:34:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716873430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:04,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:34:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539062709] [2023-12-02 17:34:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:04,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:34:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:34:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:34:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:34:04,985 INFO L87 Difference]: Start difference. First operand 166 states and 237 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:34:07,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:09,488 WARN L539 Checker$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 17:34:11,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:14,687 WARN L539 Checker$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 17:34:17,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:19,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:21,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:23,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:24,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:26,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:30,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:32,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:33,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:33,747 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 17:34:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:34:33,748 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2023-12-02 17:34:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:33,750 INFO L225 Difference]: With dead ends: 334 [2023-12-02 17:34:33,750 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 17:34:33,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 17:34:33,752 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 191 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:33,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 5 Unknown, 0 Unchecked, 28.7s Time] [2023-12-02 17:34:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 17:34:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 17:34:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:34:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 17:34:33,765 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 106 [2023-12-02 17:34:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:33,765 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 17:34:33,765 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:34:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 17:34:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 17:34:33,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:33,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:33,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 17:34:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:33,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1014599974, now seen corresponding path program 1 times [2023-12-02 17:34:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:34:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613606361] [2023-12-02 17:34:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:33,971 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 17:34:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:34:33,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:33,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:34:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:38,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 2227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:34:38,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 17:34:39,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:34:39,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:34:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613606361] [2023-12-02 17:34:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613606361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:34:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493712235] [2023-12-02 17:34:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:34:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:34:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:34:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:34:39,236 INFO L87 Difference]: Start difference. First operand 166 states and 237 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:34:41,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:43,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:44,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:47,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:49,517 WARN L539 Checker$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 17:34:52,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:53,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:55,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:34:58,530 WARN L539 Checker$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 17:35:00,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:03,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:04,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:06,895 WARN L539 Checker$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 17:35:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:06,929 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 17:35:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:35:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 114 [2023-12-02 17:35:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:06,956 INFO L225 Difference]: With dead ends: 334 [2023-12-02 17:35:06,956 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 17:35:06,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 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 17:35:06,958 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 356 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:06,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 477 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 262 Invalid, 2 Unknown, 0 Unchecked, 27.6s Time] [2023-12-02 17:35:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 17:35:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 17:35:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:35:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 17:35:06,978 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 114 [2023-12-02 17:35:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:06,978 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 17:35:06,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:35:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 17:35:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 17:35:06,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:06,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:07,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:07,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:07,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:35:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -181194373, now seen corresponding path program 1 times [2023-12-02 17:35:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:35:07,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867415401] [2023-12-02 17:35:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,184 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 17:35:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:35:07,185 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:07,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:12,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:35:12,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-02 17:35:13,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:13,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:35:13,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867415401] [2023-12-02 17:35:13,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867415401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:13,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:13,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:35:13,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809651438] [2023-12-02 17:35:13,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:13,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:35:13,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:35:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:35:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:35:13,060 INFO L87 Difference]: Start difference. First operand 166 states and 237 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:15,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:17,597 WARN L539 Checker$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 17:35:19,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:21,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:24,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:27,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:30,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:32,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:36,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:37,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:37,934 INFO L93 Difference]: Finished difference Result 176 states and 247 transitions. [2023-12-02 17:35:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:35:37,959 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2023-12-02 17:35:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:37,961 INFO L225 Difference]: With dead ends: 176 [2023-12-02 17:35:37,961 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 17:35:37,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 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 17:35:37,962 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 305 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:37,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 506 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 273 Invalid, 5 Unknown, 0 Unchecked, 24.8s Time] [2023-12-02 17:35:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 17:35:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-02 17:35:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 17:35:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 233 transitions. [2023-12-02 17:35:37,976 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 233 transitions. Word has length 112 [2023-12-02 17:35:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:37,977 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 233 transitions. [2023-12-02 17:35:37,977 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 233 transitions. [2023-12-02 17:35:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 17:35:37,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:37,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:38,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 17:35:38,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:38,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:35:38,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2128304122, now seen corresponding path program 1 times [2023-12-02 17:35:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:35:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080218515] [2023-12-02 17:35:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:38,182 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 17:35:38,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:35:38,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:35:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:43,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:35:43,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-02 17:35:44,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:44,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:35:44,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080218515] [2023-12-02 17:35:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080218515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:44,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:44,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:35:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733284971] [2023-12-02 17:35:44,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:35:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:35:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:35:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:35:44,159 INFO L87 Difference]: Start difference. First operand 164 states and 233 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:46,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:48,566 WARN L539 Checker$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 17:35:50,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:35:53,544 WARN L539 Checker$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 17:35:59,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:01,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:03,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:04,818 WARN L539 Checker$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 17:36:07,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:07,643 INFO L93 Difference]: Finished difference Result 168 states and 236 transitions. [2023-12-02 17:36:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:36:07,667 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2023-12-02 17:36:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:07,668 INFO L225 Difference]: With dead ends: 168 [2023-12-02 17:36:07,668 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 17:36:07,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 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 17:36:07,670 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 305 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:07,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 504 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 5 Unknown, 0 Unchecked, 23.4s Time] [2023-12-02 17:36:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 17:36:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-02 17:36:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 17:36:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-12-02 17:36:07,686 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 118 [2023-12-02 17:36:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:07,687 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-12-02 17:36:07,687 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:36:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-12-02 17:36:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 17:36:07,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:07,689 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:36:07,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:07,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:07,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:36:07,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -710146819, now seen corresponding path program 1 times [2023-12-02 17:36:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:36:07,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521298925] [2023-12-02 17:36:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:07,892 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 17:36:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:36:07,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:07,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:12,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:36:12,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 17:36:13,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:36:13,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:36:13,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521298925] [2023-12-02 17:36:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521298925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:36:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:36:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:36:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922619056] [2023-12-02 17:36:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:36:13,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:36:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:36:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:36:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:36:13,808 INFO L87 Difference]: Start difference. First operand 164 states and 232 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:36:15,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:18,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:21,839 WARN L539 Checker$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 17:36:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:27,877 WARN L539 Checker$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 17:36:29,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:31,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:35,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:36,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:36,485 INFO L93 Difference]: Finished difference Result 174 states and 242 transitions. [2023-12-02 17:36:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:36:36,510 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2023-12-02 17:36:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:36,512 INFO L225 Difference]: With dead ends: 174 [2023-12-02 17:36:36,512 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 17:36:36,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 17:36:36,513 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 180 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:36,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 499 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 3 Unknown, 0 Unchecked, 22.6s Time] [2023-12-02 17:36:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 17:36:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-02 17:36:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 17:36:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 228 transitions. [2023-12-02 17:36:36,528 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 228 transitions. Word has length 113 [2023-12-02 17:36:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:36,528 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 228 transitions. [2023-12-02 17:36:36,529 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:36:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 228 transitions. [2023-12-02 17:36:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 17:36:36,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:36,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:36:36,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:36,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:36:36,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1881937551, now seen corresponding path program 1 times [2023-12-02 17:36:36,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:36:36,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785125221] [2023-12-02 17:36:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:36,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:36:36,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:36:36,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:36,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:36:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:41,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:36:41,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-02 17:36:42,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:36:42,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:36:42,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785125221] [2023-12-02 17:36:42,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785125221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:36:42,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:36:42,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:36:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509871983] [2023-12-02 17:36:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:36:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:36:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:36:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:36:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:36:42,577 INFO L87 Difference]: Start difference. First operand 162 states and 228 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:36:44,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:48,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:51,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:54,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:36:57,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:00,173 WARN L539 Checker$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 17:37:03,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:03,184 INFO L93 Difference]: Finished difference Result 172 states and 238 transitions. [2023-12-02 17:37:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:37:03,208 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2023-12-02 17:37:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:03,210 INFO L225 Difference]: With dead ends: 172 [2023-12-02 17:37:03,210 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 17:37:03,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 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 17:37:03,211 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 299 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:03,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 492 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 258 Invalid, 2 Unknown, 0 Unchecked, 20.5s Time] [2023-12-02 17:37:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 17:37:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 17:37:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 17:37:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2023-12-02 17:37:03,235 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 115 [2023-12-02 17:37:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:03,235 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2023-12-02 17:37:03,235 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:37:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2023-12-02 17:37:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 17:37:03,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:03,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:03,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:03,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:03,438 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:03,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash 845312988, now seen corresponding path program 1 times [2023-12-02 17:37:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:37:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918530656] [2023-12-02 17:37:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:03,440 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 17:37:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:37:03,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:08,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:37:08,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:37:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 17:37:09,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:37:09,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:37:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918530656] [2023-12-02 17:37:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918530656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:09,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:09,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:37:09,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451355834] [2023-12-02 17:37:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:09,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:37:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:37:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:37:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:37:09,712 INFO L87 Difference]: Start difference. First operand 160 states and 224 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:37:12,104 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 17:37:14,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:16,117 WARN L539 Checker$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 17:37:23,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:25,933 WARN L539 Checker$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 17:37:27,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:29,939 WARN L539 Checker$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 17:37:33,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:35,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:37:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:35,151 INFO L93 Difference]: Finished difference Result 170 states and 234 transitions. [2023-12-02 17:37:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:37:35,174 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2023-12-02 17:37:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:35,176 INFO L225 Difference]: With dead ends: 170 [2023-12-02 17:37:35,176 INFO L226 Difference]: Without dead ends: 158 [2023-12-02 17:37:35,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 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 17:37:35,177 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 172 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:35,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 485 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 25.4s Time] [2023-12-02 17:37:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-02 17:37:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-02 17:37:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 17:37:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2023-12-02 17:37:35,189 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 116 [2023-12-02 17:37:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2023-12-02 17:37:35,189 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:37:35,190 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2023-12-02 17:37:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 17:37:35,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:35,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:35,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:35,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:35,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:37:35,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash 682398772, now seen corresponding path program 1 times [2023-12-02 17:37:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:37:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274062026] [2023-12-02 17:37:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:35,394 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 17:37:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:37:35,395 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:37:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2877e7d4-8120-41a9-8ea4-1277b5288888/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 17:39:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:39:26,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 2254 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-02 17:39:26,240 INFO L285 TraceCheckSpWp]: Computing forward predicates...