./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:49,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:49,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:14:49,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:49,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:49,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:49,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:49,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:49,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:49,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:49,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:49,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:49,781 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:49,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:49,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:49,782 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:49,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:49,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:49,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:49,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:49,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:49,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:49,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:49,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:49,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:49,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:49,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:49,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:49,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:49,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:49,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:49,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:49,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:49,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:14:49,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:49,797 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:49,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:49,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:49,798 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:49,798 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2023-11-12 02:14:50,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:50,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:50,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:50,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:50,117 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:50,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-12 02:14:53,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:53,564 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:53,565 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-12 02:14:53,587 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/da1a870b2/93f7f64f5bc44e38abe7d721e77d3bbd/FLAGc0fb4607d [2023-11-12 02:14:53,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/da1a870b2/93f7f64f5bc44e38abe7d721e77d3bbd [2023-11-12 02:14:53,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:53,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:53,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:53,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:53,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:53,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:53" (1/1) ... [2023-11-12 02:14:53,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427d5d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:53, skipping insertion in model container [2023-11-12 02:14:53,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:53" (1/1) ... [2023-11-12 02:14:53,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:54,250 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: fpclassify 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:2241) 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:1472) 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:1137) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:278) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2467) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:724) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2467) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2467) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1658) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:231) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1084) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1069) 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:383) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1499) 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:3388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2409) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:608) 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) [2023-11-12 02:14:54,256 INFO L158 Benchmark]: Toolchain (without parser) took 639.92ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 111.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:14:54,257 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:14:54,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.36ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 111.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:14:54,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.36ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 111.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. 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: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:56,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:56,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-12 02:14:56,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:56,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:56,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:56,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:56,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:56,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:56,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:56,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:56,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:56,793 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:56,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:56,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:56,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:56,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:56,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:56,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:56,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:56,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:56,799 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:14:56,799 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:14:56,800 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:14:56,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:56,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:56,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:56,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:56,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:56,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:56,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:56,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:56,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:56,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:56,804 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:14:56,805 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:14:56,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:56,805 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:56,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:56,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:56,806 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:14:56,807 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:56,807 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2023-11-12 02:14:57,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:57,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:57,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:57,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:57,269 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:57,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-12 02:15:00,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:00,955 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:00,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i [2023-11-12 02:15:00,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/123638045/109326235a3e432198cf33e4bb978813/FLAGa329161ef [2023-11-12 02:15:00,997 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/data/123638045/109326235a3e432198cf33e4bb978813 [2023-11-12 02:15:01,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:01,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:01,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:01,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:01,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:01,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:00" (1/1) ... [2023-11-12 02:15:01,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8a0874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01, skipping insertion in model container [2023-11-12 02:15:01,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:00" (1/1) ... [2023-11-12 02:15:01,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:01,700 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2023-11-12 02:15:01,709 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2023-11-12 02:15:01,711 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2023-11-12 02:15:01,718 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2023-11-12 02:15:01,719 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2023-11-12 02:15:01,720 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2023-11-12 02:15:01,721 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2023-11-12 02:15:01,721 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2023-11-12 02:15:01,723 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2023-11-12 02:15:01,725 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2023-11-12 02:15:01,727 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2023-11-12 02:15:01,729 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2023-11-12 02:15:01,734 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2023-11-12 02:15:01,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:01,759 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:01,791 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2023-11-12 02:15:01,793 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2023-11-12 02:15:01,795 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2023-11-12 02:15:01,797 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2023-11-12 02:15:01,798 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2023-11-12 02:15:01,799 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2023-11-12 02:15:01,800 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2023-11-12 02:15:01,801 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2023-11-12 02:15:01,802 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2023-11-12 02:15:01,803 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2023-11-12 02:15:01,804 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2023-11-12 02:15:01,805 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2023-11-12 02:15:01,807 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_ba9308b7-aab5-434e-8f7b-77386af690ce/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2023-11-12 02:15:01,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:01,980 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:01,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01 WrapperNode [2023-11-12 02:15:01,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:01,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:01,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:01,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:01,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,074 INFO L138 Inliner]: procedures = 449, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2023-11-12 02:15:02,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:02,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:02,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:02,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:02,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:02,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:02,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:02,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:02,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (1/1) ... [2023-11-12 02:15:02,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:02,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:02,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:15:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:15:02,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:15:02,361 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:02,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:12,631 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:12,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:12,637 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:15:12,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:12 BoogieIcfgContainer [2023-11-12 02:15:12,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:12,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:12,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:12,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:12,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:00" (1/3) ... [2023-11-12 02:15:12,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f079546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:12, skipping insertion in model container [2023-11-12 02:15:12,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:01" (2/3) ... [2023-11-12 02:15:12,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f079546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:12, skipping insertion in model container [2023-11-12 02:15:12,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:12" (3/3) ... [2023-11-12 02:15:12,667 INFO L112 eAbstractionObserver]: Analyzing ICFG float21.i [2023-11-12 02:15:12,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:12,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-12 02:15:12,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:12,759 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=PETRI_NET, 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;@2360d3c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:12,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:15:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 02:15:12,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:12,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 02:15:12,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:12,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2023-11-12 02:15:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:12,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740626517] [2023-11-12 02:15:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:12,791 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 [2023-11-12 02:15:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:12,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:12,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:15:12,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:12,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:13,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740626517] [2023-11-12 02:15:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740626517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:13,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521123089] [2023-11-12 02:15:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:13,057 INFO L87 Difference]: Start difference. First operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:15,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:18,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:18,054 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2023-11-12 02:15:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 02:15:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:18,066 INFO L225 Difference]: With dead ends: 103 [2023-11-12 02:15:18,067 INFO L226 Difference]: Without dead ends: 47 [2023-11-12 02:15:18,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:18,074 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:18,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-11-12 02:15:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-12 02:15:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-12 02:15:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 42 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2023-11-12 02:15:18,122 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 4 [2023-11-12 02:15:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:18,123 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2023-11-12 02:15:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2023-11-12 02:15:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:15:18,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:18,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:18,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:18,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:15:18,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:18,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:18,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1079818240, now seen corresponding path program 1 times [2023-11-12 02:15:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11084193] [2023-11-12 02:15:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:18,347 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 [2023-11-12 02:15:18,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:18,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:18,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:18,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:18,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:18,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:18,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:18,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11084193] [2023-11-12 02:15:18,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11084193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:18,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:18,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:15:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236107995] [2023-11-12 02:15:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:18,708 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:15:22,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:24,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:25,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:27,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:29,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:31,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:33,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:33,838 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-11-12 02:15:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:33,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-12 02:15:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:33,855 INFO L225 Difference]: With dead ends: 47 [2023-11-12 02:15:33,856 INFO L226 Difference]: Without dead ends: 45 [2023-11-12 02:15:33,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:33,858 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:33,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 100 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 4 Unknown, 0 Unchecked, 15.1s Time] [2023-11-12 02:15:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-12 02:15:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-12 02:15:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 40 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2023-11-12 02:15:33,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 11 [2023-11-12 02:15:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:33,872 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2023-11-12 02:15:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:15:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2023-11-12 02:15:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 02:15:33,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:33,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:33,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:34,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:15:34,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:34,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash -885368843, now seen corresponding path program 1 times [2023-11-12 02:15:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:34,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482253612] [2023-11-12 02:15:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:34,085 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 [2023-11-12 02:15:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:34,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:34,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:34,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:15:34,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:34,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:34,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482253612] [2023-11-12 02:15:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482253612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396796355] [2023-11-12 02:15:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:34,213 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:15:37,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:39,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:40,082 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2023-11-12 02:15:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-12 02:15:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:40,091 INFO L225 Difference]: With dead ends: 45 [2023-11-12 02:15:40,091 INFO L226 Difference]: Without dead ends: 41 [2023-11-12 02:15:40,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:40,093 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:40,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-12 02:15:40,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-12 02:15:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-12 02:15:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 36 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2023-11-12 02:15:40,101 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 12 [2023-11-12 02:15:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:40,102 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2023-11-12 02:15:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:15:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2023-11-12 02:15:40,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 02:15:40,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:40,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:40,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:15:40,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:40,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1435316947, now seen corresponding path program 1 times [2023-11-12 02:15:40,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:40,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800519228] [2023-11-12 02:15:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:40,311 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 [2023-11-12 02:15:40,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:40,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:40,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:40,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:15:40,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:15:40,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:40,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800519228] [2023-11-12 02:15:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800519228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:15:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471420660] [2023-11-12 02:15:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:40,798 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:15:44,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 02:15:46,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 02:15:48,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 02:15:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:50,315 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2023-11-12 02:15:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:50,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-12 02:15:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:50,332 INFO L225 Difference]: With dead ends: 41 [2023-11-12 02:15:50,332 INFO L226 Difference]: Without dead ends: 39 [2023-11-12 02:15:50,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:50,333 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:50,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 53 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2023-11-12 02:15:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-12 02:15:50,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-12 02:15:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 34 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-11-12 02:15:50,346 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 19 [2023-11-12 02:15:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:50,347 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-11-12 02:15:50,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:15:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-11-12 02:15:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 02:15:50,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:50,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:50,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:15:50,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:50,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1545156500, now seen corresponding path program 1 times [2023-11-12 02:15:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341319963] [2023-11-12 02:15:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:50,565 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 [2023-11-12 02:15:50,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:50,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:50,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:15:50,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:15:50,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:50,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341319963] [2023-11-12 02:15:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341319963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:50,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661923242] [2023-11-12 02:15:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:50,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:50,796 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:15:53,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:55,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:15:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:55,563 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-11-12 02:15:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:55,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-12 02:15:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:55,573 INFO L225 Difference]: With dead ends: 39 [2023-11-12 02:15:55,573 INFO L226 Difference]: Without dead ends: 35 [2023-11-12 02:15:55,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:55,574 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:55,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-12 02:15:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-12 02:15:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-12 02:15:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 30 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:15:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-11-12 02:15:55,581 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 20 [2023-11-12 02:15:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:55,581 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-11-12 02:15:55,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:15:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-11-12 02:15:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 02:15:55,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:55,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:55,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:15:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:15:55,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-11-12 02:15:55,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1163156356, now seen corresponding path program 1 times [2023-11-12 02:15:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:15:55,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810688794] [2023-11-12 02:15:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:55,785 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 [2023-11-12 02:15:55,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:15:55,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:15:55,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9308b7-aab5-434e-8f7b-77386af690ce/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:15:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:55,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:15:55,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:15:56,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:15:56,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:15:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810688794] [2023-11-12 02:15:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810688794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:56,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163831774] [2023-11-12 02:15:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:15:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:56,067 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:15:58,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []