./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3abc8a0ec3bb73998f9a0961a925bbe407f21d350b560d47850c8da8957643f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:58:45,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:58:45,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:58:45,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:58:45,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:58:45,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:58:45,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:58:45,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:58:45,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:58:45,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:58:45,910 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:58:45,910 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:58:45,911 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:58:45,911 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:58:45,912 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:58:45,912 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:58:45,913 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:58:45,913 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:58:45,914 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:58:45,914 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:58:45,915 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:58:45,915 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:58:45,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:58:45,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:58:45,917 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:58:45,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:58:45,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:58:45,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:58:45,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:58:45,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:58:45,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:58:45,920 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:58:45,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:58:45,921 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:58:45,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:58:45,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:58:45,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:58:45,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:45,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:58:45,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:58:45,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:58:45,923 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:58:45,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:58:45,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:58:45,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:58:45,924 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:58:45,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:58:45,924 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3abc8a0ec3bb73998f9a0961a925bbe407f21d350b560d47850c8da8957643f7 [2023-12-02 17:58:46,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:58:46,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:58:46,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:58:46,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:58:46,174 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:58:46,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i [2023-12-02 17:58:49,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:58:49,363 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:58:49,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i [2023-12-02 17:58:49,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/f60a9338c/c61d0bd37c2b416f9e51c94862463078/FLAG2b0ce2588 [2023-12-02 17:58:49,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/f60a9338c/c61d0bd37c2b416f9e51c94862463078 [2023-12-02 17:58:49,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:58:49,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:58:49,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:49,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:58:49,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:58:49,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:49" (1/1) ... [2023-12-02 17:58:49,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbd79d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:49, skipping insertion in model container [2023-12-02 17:58:49,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:49" (1/1) ... [2023-12-02 17:58:49,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:58:50,394 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:251) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:3086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2927) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:142) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1156) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:386) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2441) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 17:58:50,399 INFO L158 Benchmark]: Toolchain (without parser) took 985.75ms. Allocated memory is still 148.9MB. Free memory was 106.5MB in the beginning and 85.9MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 17:58:50,400 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:58:50,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 983.36ms. Allocated memory is still 148.9MB. Free memory was 106.5MB in the beginning and 85.9MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 17:58:50,401 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 983.36ms. Allocated memory is still 148.9MB. Free memory was 106.5MB in the beginning and 85.9MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3abc8a0ec3bb73998f9a0961a925bbe407f21d350b560d47850c8da8957643f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:58:52,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:58:52,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:58:52,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:58:52,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:58:52,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:58:52,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:58:52,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:58:52,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:58:52,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:58:52,232 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:58:52,232 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:58:52,233 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:58:52,233 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:58:52,234 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:58:52,234 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:58:52,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:58:52,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:58:52,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:58:52,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:58:52,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:58:52,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:58:52,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:58:52,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:58:52,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:58:52,239 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:58:52,240 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:58:52,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:58:52,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:58:52,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:58:52,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:58:52,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:58:52,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:58:52,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:58:52,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:52,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:58:52,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:58:52,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:58:52,244 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:58:52,244 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:58:52,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:58:52,246 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:58:52,247 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:58:52,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:58:52,247 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3abc8a0ec3bb73998f9a0961a925bbe407f21d350b560d47850c8da8957643f7 [2023-12-02 17:58:52,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:58:52,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:58:52,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:58:52,563 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:58:52,563 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:58:52,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i [2023-12-02 17:58:53,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:58:57,842 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:58:57,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i [2023-12-02 17:58:57,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/11a21c877/0a7cfb27e5fd4db487d90b64a69d4de7/FLAGf5986c235 [2023-12-02 17:58:57,887 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/data/11a21c877/0a7cfb27e5fd4db487d90b64a69d4de7 [2023-12-02 17:58:57,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:58:57,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:58:57,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:57,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:58:57,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:58:57,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:57" (1/1) ... [2023-12-02 17:58:57,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b3833f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:57, skipping insertion in model container [2023-12-02 17:58:57,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:58:57" (1/1) ... [2023-12-02 17:58:57,996 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:58:58,816 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_9df3198b-846a-4ff9-8c79-025a77510ab0/sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 17:58:59,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:59,067 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:58:59,085 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:58:59,112 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_9df3198b-846a-4ff9-8c79-025a77510ab0/sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 17:58:59,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:59,197 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:58:59,241 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_9df3198b-846a-4ff9-8c79-025a77510ab0/sv-benchmarks/c/neural-networks/poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i[71475,71488] [2023-12-02 17:58:59,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:58:59,599 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:59,599 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:59,599 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:59,600 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:58:59,607 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:58:59,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59 WrapperNode [2023-12-02 17:58:59,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:58:59,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:59,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:58:59,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:58:59,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,764 INFO L138 Inliner]: procedures = 779, calls = 581, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1172 [2023-12-02 17:58:59,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:58:59,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:58:59,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:58:59,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:58:59,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:58:59,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:58:59,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:58:59,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:58:59,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (1/1) ... [2023-12-02 17:58:59,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:58:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:59,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:58:59,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:58:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 17:58:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 17:58:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:58:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:58:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:58:59,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:58:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 17:58:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 17:58:59,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 17:58:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 17:58:59,960 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 17:58:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:58:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:58:59,961 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 17:58:59,961 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 17:59:00,217 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:59:00,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:59:22,949 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:59:23,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:59:23,062 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 17:59:23,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:59:23 BoogieIcfgContainer [2023-12-02 17:59:23,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:59:23,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:59:23,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:59:23,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:59:23,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:58:57" (1/3) ... [2023-12-02 17:59:23,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113c2a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:59:23, skipping insertion in model container [2023-12-02 17:59:23,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:58:59" (2/3) ... [2023-12-02 17:59:23,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113c2a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:59:23, skipping insertion in model container [2023-12-02 17:59:23,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:59:23" (3/3) ... [2023-12-02 17:59:23,072 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_4_4_4_4_thresh_3_unsafe.c-amalgamation.i [2023-12-02 17:59:23,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:59:23,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:59:23,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:59:23,142 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@464ba00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:59:23,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:59:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:59:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 17:59:23,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:23,174 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:23,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:59:23,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1083831927, now seen corresponding path program 1 times [2023-12-02 17:59:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:59:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27961563] [2023-12-02 17:59:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:23,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:59:23,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:59:23,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 17:59:23,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 17:59:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:25,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 17:59:25,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 17:59:25,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:25,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:59:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27961563] [2023-12-02 17:59:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27961563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:25,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:59:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165888548] [2023-12-02 17:59:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:59:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:59:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:59:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:59:25,804 INFO L87 Difference]: Start difference. First operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 17:59:28,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:30,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:31,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:35,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:37,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:37,195 INFO L93 Difference]: Finished difference Result 324 states and 568 transitions. [2023-12-02 17:59:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:59:37,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 116 [2023-12-02 17:59:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:37,209 INFO L225 Difference]: With dead ends: 324 [2023-12-02 17:59:37,210 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 17:59:37,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:59:37,223 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:37,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 17:59:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 17:59:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 17:59:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:59:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 232 transitions. [2023-12-02 17:59:37,275 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 232 transitions. Word has length 116 [2023-12-02 17:59:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:37,275 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 232 transitions. [2023-12-02 17:59:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 17:59:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 232 transitions. [2023-12-02 17:59:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 17:59:37,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:37,284 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:37,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:59:37,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:59:37,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:59:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 845100299, now seen corresponding path program 1 times [2023-12-02 17:59:37,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:59:37,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122285584] [2023-12-02 17:59:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:37,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:59:37,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:59:37,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 17:59:37,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 17:59:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:41,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:59:41,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 17:59:41,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:59:41,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:59:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122285584] [2023-12-02 17:59:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122285584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:59:41,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:59:41,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:59:41,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960874045] [2023-12-02 17:59:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:59:41,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:59:41,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:59:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:59:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:59:41,671 INFO L87 Difference]: Start difference. First operand 161 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:59:44,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:46,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:48,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:50,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:59:58,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:00,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:02,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:05,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:06,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:06,865 INFO L93 Difference]: Finished difference Result 324 states and 470 transitions. [2023-12-02 18:00:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:00:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 116 [2023-12-02 18:00:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:06,871 INFO L225 Difference]: With dead ends: 324 [2023-12-02 18:00:06,871 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 18:00:06,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:00:06,874 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 199 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:06,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 501 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 289 Invalid, 6 Unknown, 0 Unchecked, 25.1s Time] [2023-12-02 18:00:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 18:00:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-02 18:00:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:00:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 18:00:06,897 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 116 [2023-12-02 18:00:06,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:06,898 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 18:00:06,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:00:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 18:00:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 18:00:06,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:06,901 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:06,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 18:00:07,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:07,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:00:07,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash 697486831, now seen corresponding path program 1 times [2023-12-02 18:00:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:00:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954914617] [2023-12-02 18:00:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:07,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:00:07,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:00:07,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 18:00:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:10,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:00:10,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 18:00:11,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:00:11,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:00:11,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954914617] [2023-12-02 18:00:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954914617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:00:11,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:00:11,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:00:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110958414] [2023-12-02 18:00:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:00:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:00:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:00:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:00:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:00:11,150 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:00:13,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:15,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:17,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:19,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:20,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:26,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:28,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:29,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:32,831 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 18:00:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:00:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 120 [2023-12-02 18:00:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:32,836 INFO L225 Difference]: With dead ends: 336 [2023-12-02 18:00:32,836 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 18:00:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:00:32,839 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 319 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:32,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 296 Invalid, 3 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 18:00:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 18:00:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 18:00:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:00:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 18:00:32,862 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 120 [2023-12-02 18:00:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:32,863 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 18:00:32,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:00:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 18:00:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 18:00:32,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:32,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:32,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 18:00:33,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:33,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:00:33,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 864054703, now seen corresponding path program 1 times [2023-12-02 18:00:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:00:33,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501836346] [2023-12-02 18:00:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:33,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:33,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:00:33,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:00:33,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 18:00:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:36,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:00:36,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-12-02 18:00:37,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:00:37,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:00:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501836346] [2023-12-02 18:00:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501836346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:00:37,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:00:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:00:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007606148] [2023-12-02 18:00:37,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:00:37,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:00:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:00:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:00:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:00:37,055 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:00:39,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:41,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:43,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:46,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:53,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:55,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:59,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:00:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:59,221 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 18:00:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:00:59,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 128 [2023-12-02 18:00:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:59,246 INFO L225 Difference]: With dead ends: 336 [2023-12-02 18:00:59,246 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 18:00:59,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:00:59,249 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 193 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:59,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 510 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2023-12-02 18:00:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 18:00:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 18:00:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:00:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 18:00:59,278 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 128 [2023-12-02 18:00:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:59,279 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 18:00:59,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:00:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 18:00:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 18:00:59,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:59,282 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:59,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 18:00:59,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:59,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:00:59,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -324971045, now seen corresponding path program 1 times [2023-12-02 18:00:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:00:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238407170] [2023-12-02 18:00:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:59,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:00:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:00:59,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:00:59,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 18:01:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:03,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:01:03,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 18:01:03,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:03,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:03,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238407170] [2023-12-02 18:01:03,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238407170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:03,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:01:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833030835] [2023-12-02 18:01:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:01:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:01:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:01:03,530 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:01:05,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:07,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:09,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:12,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:20,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:22,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:24,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:27,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:28,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:28,874 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 18:01:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:01:28,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 136 [2023-12-02 18:01:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:28,877 INFO L225 Difference]: With dead ends: 336 [2023-12-02 18:01:28,877 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 18:01:28,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:01:28,879 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 316 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:28,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 293 Invalid, 6 Unknown, 0 Unchecked, 25.3s Time] [2023-12-02 18:01:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 18:01:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 18:01:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:01:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 18:01:28,897 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 136 [2023-12-02 18:01:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:28,898 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 18:01:28,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:01:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 18:01:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:01:28,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:28,902 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:28,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 18:01:29,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:01:29,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:29,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1316936704, now seen corresponding path program 1 times [2023-12-02 18:01:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:29,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462225875] [2023-12-02 18:01:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:01:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:29,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:01:29,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 18:01:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:32,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:01:32,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 18:01:33,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:33,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:33,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462225875] [2023-12-02 18:01:33,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462225875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:33,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:01:33,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747901782] [2023-12-02 18:01:33,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:33,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:01:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:01:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:01:33,592 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:01:35,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:38,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:40,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:46,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:49,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:51,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:53,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:55,381 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 18:01:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:01:55,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 141 [2023-12-02 18:01:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:55,406 INFO L225 Difference]: With dead ends: 336 [2023-12-02 18:01:55,407 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 18:01:55,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:01:55,408 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 356 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:55,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 478 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 21.7s Time] [2023-12-02 18:01:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 18:01:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 18:01:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:01:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 18:01:55,424 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 141 [2023-12-02 18:01:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:55,425 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 18:01:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:01:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 18:01:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 18:01:55,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:55,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:55,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 18:01:55,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:01:55,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:55,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -934649, now seen corresponding path program 1 times [2023-12-02 18:01:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712411354] [2023-12-02 18:01:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:55,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:01:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:55,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:01:55,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 18:01:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:59,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:01:59,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-02 18:02:01,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:02:01,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:02:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712411354] [2023-12-02 18:02:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712411354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:02:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:02:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:02:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515719898] [2023-12-02 18:02:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:02:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:02:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:02:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:02:01,147 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:02:03,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:05,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:07,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:16,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:18,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:20,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:23,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:23,687 INFO L93 Difference]: Finished difference Result 177 states and 249 transitions. [2023-12-02 18:02:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:02:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 140 [2023-12-02 18:02:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:23,720 INFO L225 Difference]: With dead ends: 177 [2023-12-02 18:02:23,720 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 18:02:23,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:02:23,721 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 184 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:23,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 507 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 279 Invalid, 6 Unknown, 0 Unchecked, 22.5s Time] [2023-12-02 18:02:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 18:02:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 18:02:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 18:02:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 18:02:23,735 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 140 [2023-12-02 18:02:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:23,736 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 18:02:23,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:02:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 18:02:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 18:02:23,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:23,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:02:23,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 18:02:23,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:02:23,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:02:23,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1374826726, now seen corresponding path program 1 times [2023-12-02 18:02:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:02:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800862902] [2023-12-02 18:02:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:23,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:02:23,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:02:23,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:02:23,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 18:02:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:28,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:02:28,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 18:02:29,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:02:29,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:02:29,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800862902] [2023-12-02 18:02:29,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800862902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:02:29,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:02:29,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:02:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099860021] [2023-12-02 18:02:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:02:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:02:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:02:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:02:29,422 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:02:31,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:33,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:35,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:39,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:45,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:47,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:51,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:02:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:51,784 INFO L93 Difference]: Finished difference Result 169 states and 238 transitions. [2023-12-02 18:02:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:02:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 146 [2023-12-02 18:02:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:51,808 INFO L225 Difference]: With dead ends: 169 [2023-12-02 18:02:51,808 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 18:02:51,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:02:51,809 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 305 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:51,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 505 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 276 Invalid, 5 Unknown, 0 Unchecked, 22.3s Time] [2023-12-02 18:02:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 18:02:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 18:02:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 18:02:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 234 transitions. [2023-12-02 18:02:51,822 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 234 transitions. Word has length 146 [2023-12-02 18:02:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:51,823 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 234 transitions. [2023-12-02 18:02:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:02:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 234 transitions. [2023-12-02 18:02:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:02:51,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:51,826 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:02:51,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 18:02:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:02:52,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:02:52,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2127001393, now seen corresponding path program 1 times [2023-12-02 18:02:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:02:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101326824] [2023-12-02 18:02:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:52,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:02:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:02:52,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:02:52,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 18:02:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:56,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:02:56,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 18:02:57,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:02:57,462 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:02:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101326824] [2023-12-02 18:02:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101326824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:02:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:02:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:02:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580673636] [2023-12-02 18:02:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:02:57,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:02:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:02:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:02:57,465 INFO L87 Difference]: Start difference. First operand 165 states and 234 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:02:59,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:01,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:03,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:05,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:13,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:14,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:16,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:19,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:19,165 INFO L93 Difference]: Finished difference Result 175 states and 244 transitions. [2023-12-02 18:03:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:03:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 141 [2023-12-02 18:03:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:19,192 INFO L225 Difference]: With dead ends: 175 [2023-12-02 18:03:19,192 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 18:03:19,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:03:19,193 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 302 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:19,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 500 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 273 Invalid, 3 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 18:03:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 18:03:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 18:03:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 18:03:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2023-12-02 18:03:19,207 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 141 [2023-12-02 18:03:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:19,207 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2023-12-02 18:03:19,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:03:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2023-12-02 18:03:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 18:03:19,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:19,210 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:19,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 18:03:19,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:03:19,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:19,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash -712448106, now seen corresponding path program 1 times [2023-12-02 18:03:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:03:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45681174] [2023-12-02 18:03:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:19,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:03:19,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:03:19,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:03:19,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 18:03:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:23,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 2027 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:03:23,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:03:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 18:03:24,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:03:24,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:03:24,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45681174] [2023-12-02 18:03:24,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45681174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:03:24,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:03:24,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:03:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120719554] [2023-12-02 18:03:24,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:03:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:03:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:03:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:03:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:03:24,885 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:03:27,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:29,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:31,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:39,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:41,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:43,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:47,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:48,158 INFO L93 Difference]: Finished difference Result 173 states and 240 transitions. [2023-12-02 18:03:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:03:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 143 [2023-12-02 18:03:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:48,184 INFO L225 Difference]: With dead ends: 173 [2023-12-02 18:03:48,184 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 18:03:48,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:03:48,185 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 176 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 493 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 23.2s Time] [2023-12-02 18:03:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 18:03:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 18:03:48,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 18:03:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2023-12-02 18:03:48,200 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 143 [2023-12-02 18:03:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:48,201 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2023-12-02 18:03:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:03:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2023-12-02 18:03:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 18:03:48,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:48,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:48,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 18:03:48,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:03:48,405 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:03:48,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash -11155817, now seen corresponding path program 1 times [2023-12-02 18:03:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:03:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782485177] [2023-12-02 18:03:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:48,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:03:48,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:03:48,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:03:48,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 18:03:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:52,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:03:52,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:03:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-02 18:03:53,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:03:53,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:03:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782485177] [2023-12-02 18:03:53,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782485177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:03:53,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:03:53,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:03:53,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533740947] [2023-12-02 18:03:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:03:53,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:03:53,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:03:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:03:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:03:53,881 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:03:56,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:03:58,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:00,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:07,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:09,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:11,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:14,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:04:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:14,705 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2023-12-02 18:04:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:04:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 144 [2023-12-02 18:04:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:14,727 INFO L225 Difference]: With dead ends: 171 [2023-12-02 18:04:14,727 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 18:04:14,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:04:14,728 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 173 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:14,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 486 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 5 Unknown, 0 Unchecked, 20.8s Time] [2023-12-02 18:04:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 18:04:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 18:04:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 18:04:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2023-12-02 18:04:14,743 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 144 [2023-12-02 18:04:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:14,744 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2023-12-02 18:04:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 18:04:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2023-12-02 18:04:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 18:04:14,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:14,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:14,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 18:04:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:04:14,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:04:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1894995928, now seen corresponding path program 1 times [2023-12-02 18:04:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:04:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397239905] [2023-12-02 18:04:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:04:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:04:14,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:04:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 18:05:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:13,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 18:05:13,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:05:13,706 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-12-02 18:05:13,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2023-12-02 18:05:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 18:05:16,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:05:20,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:05:20,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397239905] [2023-12-02 18:05:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397239905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:05:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185958823] [2023-12-02 18:05:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:20,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:05:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:05:20,125 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:05:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9df3198b-846a-4ff9-8c79-025a77510ab0/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process