./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_8_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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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 752492cf9ece07a339fa9c1a328626b19c929eb5baed3983ac296ba1326b9b8f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:44:17,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:44:17,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:44:17,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:44:17,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:44:17,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:44:17,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:44:17,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:44:17,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:44:17,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:44:17,489 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:44:17,489 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:44:17,490 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:44:17,490 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:44:17,491 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:44:17,492 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:44:17,492 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:44:17,493 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:44:17,493 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:44:17,494 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:44:17,495 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:44:17,495 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:44:17,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:44:17,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:44:17,497 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:44:17,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:44:17,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:44:17,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:44:17,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:44:17,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:44:17,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:44:17,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:44:17,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:44:17,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:44:17,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:44:17,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:44:17,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:44:17,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:17,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:44:17,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:44:17,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:44:17,502 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:44:17,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:44:17,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:44:17,503 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:44:17,503 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:44:17,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:44:17,503 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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752492cf9ece07a339fa9c1a328626b19c929eb5baed3983ac296ba1326b9b8f [2023-12-02 16:44:17,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:44:17,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:44:17,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:44:17,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:44:17,765 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:44:17,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 16:44:20,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:44:20,827 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:44:20,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 16:44:20,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/f132ad51c/9f034cdf2dfe429baf41802cefa143e1/FLAG41e32d8cc [2023-12-02 16:44:20,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/f132ad51c/9f034cdf2dfe429baf41802cefa143e1 [2023-12-02 16:44:20,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:44:20,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:44:20,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:20,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:44:20,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:44:20,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:20" (1/1) ... [2023-12-02 16:44:20,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e74f100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:20, skipping insertion in model container [2023-12-02 16:44:20,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:20" (1/1) ... [2023-12-02 16:44:20,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:21,816 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 16:44:21,820 INFO L158 Benchmark]: Toolchain (without parser) took 945.87ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 80.4MB in the end (delta: 21.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 16:44:21,820 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:44:21,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 943.71ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 80.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 16:44:21,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 943.71ms. Allocated memory is still 136.3MB. Free memory was 101.4MB in the beginning and 80.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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 752492cf9ece07a339fa9c1a328626b19c929eb5baed3983ac296ba1326b9b8f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:44:23,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:44:23,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:44:23,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:44:23,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:44:23,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:44:23,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:44:23,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:44:23,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:44:23,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:44:23,737 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:44:23,737 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:44:23,738 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:44:23,738 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:44:23,739 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:44:23,739 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:44:23,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:44:23,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:44:23,741 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:44:23,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:44:23,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:44:23,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:44:23,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:44:23,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:44:23,743 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:44:23,744 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:44:23,744 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:44:23,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:44:23,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:44:23,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:44:23,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:44:23,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:44:23,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:44:23,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:44:23,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:23,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:44:23,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:44:23,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:44:23,748 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:44:23,748 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:44:23,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:44:23,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:44:23,749 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:44:23,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:44:23,749 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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 752492cf9ece07a339fa9c1a328626b19c929eb5baed3983ac296ba1326b9b8f [2023-12-02 16:44:24,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:44:24,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:44:24,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:44:24,079 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:44:24,079 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:44:24,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 16:44:26,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:44:27,306 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:44:27,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 16:44:27,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/97ec862e8/50d3edeeb8344c3588cd769c2316f627/FLAG8c369355c [2023-12-02 16:44:27,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/data/97ec862e8/50d3edeeb8344c3588cd769c2316f627 [2023-12-02 16:44:27,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:44:27,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:44:27,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:27,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:44:27,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:44:27,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:27" (1/1) ... [2023-12-02 16:44:27,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce52092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:27, skipping insertion in model container [2023-12-02 16:44:27,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:44:27" (1/1) ... [2023-12-02 16:44:27,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:28,267 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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 16:44:28,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:28,543 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 16:44:28,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:44:28,592 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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 16:44:28,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:28,689 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:44:28,728 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_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 16:44:28,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:44:29,003 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:44:29,003 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:44:29,003 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:44:29,003 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:44:29,010 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:44:29,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29 WrapperNode [2023-12-02 16:44:29,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:44:29,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:44:29,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:44:29,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:44:29,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,157 INFO L138 Inliner]: procedures = 779, calls = 762, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1354 [2023-12-02 16:44:29,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:44:29,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:44:29,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:44:29,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:44:29,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:44:29,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:44:29,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:44:29,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:44:29,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (1/1) ... [2023-12-02 16:44:29,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:44:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:44:29,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:44:29,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:44:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 16:44:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 16:44:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:44:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:44:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:44:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:44:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:44:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 16:44:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 16:44:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 16:44:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 16:44:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:44:29,348 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 16:44:29,348 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 16:44:29,598 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:44:29,600 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:44:51,629 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:44:51,754 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:44:51,754 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 16:44:51,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:44:51 BoogieIcfgContainer [2023-12-02 16:44:51,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:44:51,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:44:51,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:44:51,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:44:51,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:44:27" (1/3) ... [2023-12-02 16:44:51,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b7b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:44:51, skipping insertion in model container [2023-12-02 16:44:51,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:44:29" (2/3) ... [2023-12-02 16:44:51,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b7b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:44:51, skipping insertion in model container [2023-12-02 16:44:51,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:44:51" (3/3) ... [2023-12-02 16:44:51,764 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_8_8_8_8_thresh_4_unsafe.c-amalgamation.i [2023-12-02 16:44:51,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:44:51,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:44:51,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:44:51,837 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;@1dbd53a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:44:51,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:44:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 16:44:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:44:51,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:44:51,871 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:44:51,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:44:51,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:44:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1083831927, now seen corresponding path program 1 times [2023-12-02 16:44:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:44:51,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742451364] [2023-12-02 16:44:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:44:51,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:44:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:44:51,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:44:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 16:44:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:44:55,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:44:55,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:44:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:44:55,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:44:55,986 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:44:55,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742451364] [2023-12-02 16:44:55,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742451364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:44:55,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:44:55,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:44:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263601362] [2023-12-02 16:44:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:44:55,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:44:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:44:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:44:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:44:56,028 INFO L87 Difference]: Start difference. First operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 16:44:58,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:04,539 WARN L539 Checker$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 16:45:07,055 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 16:45:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:07,080 INFO L93 Difference]: Finished difference Result 324 states and 568 transitions. [2023-12-02 16:45:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:45:07,082 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 116 [2023-12-02 16:45:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:07,091 INFO L225 Difference]: With dead ends: 324 [2023-12-02 16:45:07,091 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 16:45:07,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:45:07,102 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:07,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 16:45:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 16:45:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 16:45:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 16:45:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 232 transitions. [2023-12-02 16:45:07,158 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 232 transitions. Word has length 116 [2023-12-02 16:45:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:07,159 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 232 transitions. [2023-12-02 16:45:07,159 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, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 16:45:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 232 transitions. [2023-12-02 16:45:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:45:07,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:07,166 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:07,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:45:07,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:07,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:07,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash 845100299, now seen corresponding path program 1 times [2023-12-02 16:45:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:07,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333318575] [2023-12-02 16:45:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:07,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:07,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:07,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:45:07,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 16:45:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:13,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:45:13,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 16:45:14,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:14,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333318575] [2023-12-02 16:45:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333318575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:14,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:14,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:45:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333213133] [2023-12-02 16:45:14,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:14,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:45:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:45:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:45:14,359 INFO L87 Difference]: Start difference. First operand 161 states and 232 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:45:16,710 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 16:45:18,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:20,723 WARN L539 Checker$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 16:45:22,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:31,178 WARN L539 Checker$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 16:45:33,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:35,212 WARN L539 Checker$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 16:45:37,893 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 16:45:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:37,969 INFO L93 Difference]: Finished difference Result 324 states and 470 transitions. [2023-12-02 16:45:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:45:37,989 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 116 [2023-12-02 16:45:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:37,993 INFO L225 Difference]: With dead ends: 324 [2023-12-02 16:45:37,993 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 16:45:37,994 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 16:45:37,996 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 199 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:37,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 501 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 285 Invalid, 6 Unknown, 0 Unchecked, 23.5s Time] [2023-12-02 16:45:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 16:45:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-02 16:45:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:45:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:45:38,019 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 116 [2023-12-02 16:45:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:38,019 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:45:38,020 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:45:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:45:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 16:45:38,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:38,023 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:38,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 16:45:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:38,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1991736503, now seen corresponding path program 1 times [2023-12-02 16:45:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:45:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115330376] [2023-12-02 16:45:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:38,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:45:38,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:45:38,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:45:38,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 16:45:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:44,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:45:44,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 16:45:44,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:45:44,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:45:44,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115330376] [2023-12-02 16:45:44,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115330376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:44,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:44,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:45:44,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103810030] [2023-12-02 16:45:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:44,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:45:44,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:45:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:45:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:45:44,915 INFO L87 Difference]: Start difference. First operand 167 states and 239 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:45:47,254 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 16:45:49,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:52,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:58,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:45:59,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:02,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:04,365 WARN L539 Checker$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 16:46:06,373 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 16:46:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:08,587 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 16:46:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:08,607 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 121 [2023-12-02 16:46:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:08,608 INFO L225 Difference]: With dead ends: 336 [2023-12-02 16:46:08,609 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:46:08,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 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 16:46:08,611 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 319 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:08,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 510 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 4 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 16:46:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:46:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 16:46:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:46:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:46:08,630 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 121 [2023-12-02 16:46:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:08,630 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:46:08,630 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:46:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:46:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 16:46:08,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:08,633 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:46:08,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 16:46:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:08,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:46:08,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1618438674, now seen corresponding path program 1 times [2023-12-02 16:46:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145931981] [2023-12-02 16:46:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:08,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:08,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:08,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:46:08,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 16:46:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:15,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:46:15,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 16:46:15,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:15,456 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145931981] [2023-12-02 16:46:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145931981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:15,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:46:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036386069] [2023-12-02 16:46:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:15,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:46:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:46:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:15,459 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:46:17,137 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 16:46:19,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:20,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:22,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:28,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:30,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:32,787 WARN L539 Checker$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 16:46:34,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:38,117 WARN L539 Checker$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 16:46:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:46:39,115 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 16:46:39,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:46:39,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 131 [2023-12-02 16:46:39,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:46:39,118 INFO L225 Difference]: With dead ends: 336 [2023-12-02 16:46:39,118 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:46:39,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 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 16:46:39,120 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 317 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:46:39,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 5 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 16:46:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:46:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 16:46:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:46:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:46:39,138 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 131 [2023-12-02 16:46:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:46:39,138 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:46:39,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:46:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:46:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 16:46:39,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:46:39,141 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:46:39,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 16:46:39,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:39,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:46:39,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:46:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash 516918859, now seen corresponding path program 1 times [2023-12-02 16:46:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:46:39,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492575377] [2023-12-02 16:46:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:46:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:46:39,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:46:39,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:46:39,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 16:46:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:46:45,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:46:45,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:46:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 16:46:45,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:46:45,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:46:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492575377] [2023-12-02 16:46:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492575377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:46:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:46:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:46:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283654813] [2023-12-02 16:46:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:46:45,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:46:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:46:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:46:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:46:45,936 INFO L87 Difference]: Start difference. First operand 167 states and 239 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:46:48,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:50,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:52,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:46:54,548 WARN L539 Checker$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 16:46:56,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:02,227 WARN L539 Checker$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 16:47:04,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:06,256 WARN L539 Checker$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 16:47:09,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:47:09,638 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 16:47:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:47:09,660 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 132 [2023-12-02 16:47:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:47:09,662 INFO L225 Difference]: With dead ends: 336 [2023-12-02 16:47:09,662 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:47:09,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 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 16:47:09,664 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 191 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:47:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 510 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 289 Invalid, 6 Unknown, 0 Unchecked, 23.6s Time] [2023-12-02 16:47:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:47:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 16:47:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:47:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:47:09,679 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 132 [2023-12-02 16:47:09,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:47:09,679 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:47:09,680 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:47:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:47:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:47:09,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:09,683 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:47:09,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 16:47:09,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:09,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:47:09,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1316936704, now seen corresponding path program 1 times [2023-12-02 16:47:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484399447] [2023-12-02 16:47:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:09,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:09,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:47:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 16:47:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:16,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:47:16,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 16:47:16,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:47:16,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:47:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484399447] [2023-12-02 16:47:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484399447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:47:16,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:47:16,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:47:16,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483087573] [2023-12-02 16:47:16,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:47:16,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:47:16,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:47:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:47:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:47:16,798 INFO L87 Difference]: Start difference. First operand 167 states and 239 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:47:19,143 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 16:47:21,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:23,154 WARN L539 Checker$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 16:47:26,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:33,331 WARN L539 Checker$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 16:47:35,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:37,370 WARN L539 Checker$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 16:47:39,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:47:39,866 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 16:47:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:47:39,867 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 141 [2023-12-02 16:47:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:47:39,868 INFO L225 Difference]: With dead ends: 336 [2023-12-02 16:47:39,869 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:47:39,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 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 16:47:39,870 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 356 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:47:39,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 478 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 269 Invalid, 6 Unknown, 0 Unchecked, 23.0s Time] [2023-12-02 16:47:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:47:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 16:47:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:47:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:47:39,896 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 141 [2023-12-02 16:47:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:47:39,897 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:47:39,897 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, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:47:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:47:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 16:47:39,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:39,900 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:47:39,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 16:47:40,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:40,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:47:40,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:40,101 INFO L85 PathProgramCache]: Analyzing trace with hash -934649, now seen corresponding path program 1 times [2023-12-02 16:47:40,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:40,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314582847] [2023-12-02 16:47:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:40,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:47:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:40,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:47:40,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 16:47:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:47,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:47:47,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-02 16:47:48,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:47:48,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:47:48,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314582847] [2023-12-02 16:47:48,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314582847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:47:48,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:47:48,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:47:48,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515432608] [2023-12-02 16:47:48,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:47:48,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:47:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:47:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:47:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:47:48,525 INFO L87 Difference]: Start difference. First operand 167 states and 239 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:47:50,909 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 16:47:52,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:47:54,915 WARN L539 Checker$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 16:47:58,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:04,900 WARN L539 Checker$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 16:48:06,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:08,925 WARN L539 Checker$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 16:48:12,809 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 16:48:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:48:13,198 INFO L93 Difference]: Finished difference Result 177 states and 249 transitions. [2023-12-02 16:48:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:48:13,221 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 140 [2023-12-02 16:48:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:48:13,223 INFO L225 Difference]: With dead ends: 177 [2023-12-02 16:48:13,224 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 16:48:13,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 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 16:48:13,225 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 184 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:48:13,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 507 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 7 Unknown, 0 Unchecked, 24.6s Time] [2023-12-02 16:48:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 16:48:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 16:48:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:48:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 16:48:13,243 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 140 [2023-12-02 16:48:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:48:13,244 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 16:48:13,244 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:48:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 16:48:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:48:13,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:48:13,246 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:48:13,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 16:48:13,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:48:13,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:48:13,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:48:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2127001393, now seen corresponding path program 1 times [2023-12-02 16:48:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:48:13,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410845904] [2023-12-02 16:48:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:13,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:48:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:48:13,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:48:13,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 16:48:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:20,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:48:20,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 16:48:22,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:48:22,057 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:48:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410845904] [2023-12-02 16:48:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410845904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:48:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:48:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:48:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248170694] [2023-12-02 16:48:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:48:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:48:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:48:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:48:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:48:22,060 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:48:24,433 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 16:48:26,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:28,450 WARN L539 Checker$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 16:48:30,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:37,045 WARN L539 Checker$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 16:48:39,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:41,072 WARN L539 Checker$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 16:48:44,081 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 16:48:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:48:44,171 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2023-12-02 16:48:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:48:44,195 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 141 [2023-12-02 16:48:44,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:48:44,196 INFO L225 Difference]: With dead ends: 175 [2023-12-02 16:48:44,196 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 16:48:44,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 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 16:48:44,197 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 303 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:48:44,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 500 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 6 Unknown, 0 Unchecked, 22.0s Time] [2023-12-02 16:48:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 16:48:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 16:48:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:48:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2023-12-02 16:48:44,209 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 141 [2023-12-02 16:48:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:48:44,209 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2023-12-02 16:48:44,210 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:48:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2023-12-02 16:48:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:48:44,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:48:44,212 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:48:44,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 16:48:44,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:48:44,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:48:44,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:48:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1374826726, now seen corresponding path program 1 times [2023-12-02 16:48:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:48:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238555972] [2023-12-02 16:48:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:48:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:48:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:48:44,417 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:48:44,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 16:48:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:48:51,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:48:51,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:48:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:48:53,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:48:53,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:48:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238555972] [2023-12-02 16:48:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238555972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:48:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:48:53,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:48:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459953502] [2023-12-02 16:48:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:48:53,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:48:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:48:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:48:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:48:53,141 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:48:55,507 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 16:48:57,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:48:59,522 WARN L539 Checker$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 16:49:07,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:09,566 WARN L539 Checker$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 16:49:11,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:14,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:14,561 INFO L93 Difference]: Finished difference Result 167 states and 234 transitions. [2023-12-02 16:49:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:49:14,587 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 146 [2023-12-02 16:49:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:14,588 INFO L225 Difference]: With dead ends: 167 [2023-12-02 16:49:14,589 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 16:49:14,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 16:49:14,590 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 301 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:14,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 498 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 6 Unknown, 0 Unchecked, 21.4s Time] [2023-12-02 16:49:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 16:49:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 16:49:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:49:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2023-12-02 16:49:14,605 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 146 [2023-12-02 16:49:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:14,605 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2023-12-02 16:49:14,606 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:49:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2023-12-02 16:49:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:49:14,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:14,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:14,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 16:49:14,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:49:14,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:49:14,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash -712448106, now seen corresponding path program 1 times [2023-12-02 16:49:14,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:49:14,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282396602] [2023-12-02 16:49:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:14,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:49:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:49:14,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:49:14,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 16:49:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:22,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:49:22,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 16:49:23,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:49:23,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:49:23,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282396602] [2023-12-02 16:49:23,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282396602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:23,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:23,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:49:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16147523] [2023-12-02 16:49:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:23,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:49:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:49:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:49:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:49:23,512 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:49:25,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:27,886 WARN L539 Checker$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 16:49:29,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:35,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:39,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:41,274 WARN L539 Checker$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 16:49:43,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:45,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:49:46,048 INFO L93 Difference]: Finished difference Result 173 states and 240 transitions. [2023-12-02 16:49:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:49:46,071 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 143 [2023-12-02 16:49:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:49:46,073 INFO L225 Difference]: With dead ends: 173 [2023-12-02 16:49:46,073 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 16:49:46,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 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 16:49:46,074 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 177 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:49:46,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 493 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 22.5s Time] [2023-12-02 16:49:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 16:49:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 16:49:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:49:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2023-12-02 16:49:46,089 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 143 [2023-12-02 16:49:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:49:46,089 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2023-12-02 16:49:46,090 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:49:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2023-12-02 16:49:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 16:49:46,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:49:46,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:49:46,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 16:49:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:49:46,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:49:46,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:49:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash -11155817, now seen corresponding path program 1 times [2023-12-02 16:49:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:49:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300128674] [2023-12-02 16:49:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:49:46,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:49:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:49:46,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:49:46,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 16:49:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:49:53,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:49:53,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:49:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-02 16:49:55,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:49:55,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:49:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300128674] [2023-12-02 16:49:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300128674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:49:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:49:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:49:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933349409] [2023-12-02 16:49:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:49:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:49:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:49:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:49:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:49:55,161 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:49:57,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:49:59,626 WARN L539 Checker$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 16:50:01,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:50:08,747 WARN L539 Checker$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 16:50:10,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:50:12,775 WARN L539 Checker$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 16:50:16,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:50:17,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:50:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:50:17,598 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2023-12-02 16:50:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:50:17,624 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 144 [2023-12-02 16:50:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:50:17,626 INFO L225 Difference]: With dead ends: 171 [2023-12-02 16:50:17,626 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 16:50:17,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 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 16:50:17,627 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 295 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:50:17,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 486 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 251 Invalid, 7 Unknown, 0 Unchecked, 22.4s Time] [2023-12-02 16:50:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 16:50:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 16:50:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:50:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2023-12-02 16:50:17,647 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 144 [2023-12-02 16:50:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:50:17,647 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2023-12-02 16:50:17,648 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, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:50:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2023-12-02 16:50:17,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 16:50:17,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:50:17,650 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:50:17,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 16:50:17,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:50:17,850 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:50:17,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:50:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1894995928, now seen corresponding path program 1 times [2023-12-02 16:50:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:50:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270543399] [2023-12-02 16:50:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:50:17,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:50:17,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:50:17,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:50:17,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee3972e0-371f-464b-96e4-9c2a1c3d6d00/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 16:52:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:52:22,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 16:52:22,806 INFO L285 TraceCheckSpWp]: Computing forward predicates...