./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/softmax_4_safe.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_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91 --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 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:07,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:07,073 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:56:07,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:07,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:07,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:07,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:07,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:07,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:07,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:07,120 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:07,121 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:07,122 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:07,124 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:07,125 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:07,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:07,126 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:07,131 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:07,131 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:07,132 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:07,132 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:07,133 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:07,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:07,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:07,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:07,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:07,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:07,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:07,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:07,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:07,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:07,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:07,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:07,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:07,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:07,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:07,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:07,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:07,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:07,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:07,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:07,143 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:07,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:07,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:07,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:07,144 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:07,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:07,144 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_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac [2023-11-24 23:56:07,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:07,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:07,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:07,432 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:07,433 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:07,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-24 23:56:10,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:10,872 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:10,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-24 23:56:10,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/71ac54d34/c92761d8eadc45e5a4c5c74d6969da12/FLAGc79d394c1 [2023-11-24 23:56:10,923 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/71ac54d34/c92761d8eadc45e5a4c5c74d6969da12 [2023-11-24 23:56:10,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:10,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:10,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:10,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:10,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:10,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:10" (1/1) ... [2023-11-24 23:56:10,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8059f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:10, skipping insertion in model container [2023-11-24 23:56:10,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:10" (1/1) ... [2023-11-24 23:56:11,015 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:11,720 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: isnan 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.lambda$76(StandardFunctionHandler.java:455) 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:2499) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2499) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2499) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:305) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1671) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:231) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java: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) [2023-11-24 23:56:11,727 INFO L158 Benchmark]: Toolchain (without parser) took 794.93ms. Allocated memory is still 213.9MB. Free memory was 165.3MB in the beginning and 150.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:56:11,727 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:11,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.18ms. Allocated memory is still 213.9MB. Free memory was 164.7MB in the beginning and 150.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:56:11,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.18ms. Allocated memory is still 213.9MB. Free memory was 164.7MB in the beginning and 150.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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: isnan de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: isnan: 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_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91 --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 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:14,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:14,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:56:14,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:14,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:14,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:14,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:14,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:14,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:14,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:14,462 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:14,463 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:14,463 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:14,464 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:14,465 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:14,465 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:14,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:14,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:14,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:14,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:14,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:14,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:14,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:14,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:14,469 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:56:14,470 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:56:14,470 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:56:14,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:14,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:14,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:14,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:14,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:56:14,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:14,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:14,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:14,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:14,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:14,475 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:14,476 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:56:14,477 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:14,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:14,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:14,478 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:14,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:14,478 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_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40e574a11ca12b49ca5e943c34828a2bb84417bee7d51d8768967fd824c71eac [2023-11-24 23:56:14,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:14,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:14,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:14,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:14,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:14,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-24 23:56:18,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:18,478 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:18,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i [2023-11-24 23:56:18,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/7f304b1fb/886b25be1df1468cb756cb6cf1617674/FLAGd6f7f41a4 [2023-11-24 23:56:18,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/data/7f304b1fb/886b25be1df1468cb756cb6cf1617674 [2023-11-24 23:56:18,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:18,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:18,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:18,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:18,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:18,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:18" (1/1) ... [2023-11-24 23:56:18,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10282293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:18, skipping insertion in model container [2023-11-24 23:56:18,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:18" (1/1) ... [2023-11-24 23:56:18,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:19,811 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_ff25bd6a-9223-491b-8d85-209a5298e30e/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-24 23:56:19,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:19,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:19,942 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_ff25bd6a-9223-491b-8d85-209a5298e30e/sv-benchmarks/c/neural-networks/softmax_4_safe.c-amalgamation.i[63646,63659] [2023-11-24 23:56:19,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:20,164 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:20,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20 WrapperNode [2023-11-24 23:56:20,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:20,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:20,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:20,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:20,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,250 INFO L138 Inliner]: procedures = 562, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2023-11-24 23:56:20,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:20,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:20,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:20,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:20,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:20,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:20,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:20,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:20,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (1/1) ... [2023-11-24 23:56:20,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:20,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:20,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-24 23:56:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:56:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:56:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-24 23:56:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:56:20,546 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:20,548 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:23,304 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:23,349 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:23,350 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:56:23,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:23 BoogieIcfgContainer [2023-11-24 23:56:23,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:23,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:23,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:23,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:23,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:18" (1/3) ... [2023-11-24 23:56:23,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31453758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:23, skipping insertion in model container [2023-11-24 23:56:23,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:20" (2/3) ... [2023-11-24 23:56:23,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31453758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:23, skipping insertion in model container [2023-11-24 23:56:23,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:23" (3/3) ... [2023-11-24 23:56:23,361 INFO L112 eAbstractionObserver]: Analyzing ICFG softmax_4_safe.c-amalgamation.i [2023-11-24 23:56:23,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:23,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:56:23,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:23,475 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;@185d91ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:23,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:56:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:56:23,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:23,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:23,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:23,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 271052457, now seen corresponding path program 1 times [2023-11-24 23:56:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292855042] [2023-11-24 23:56:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:23,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:23,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:23,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:56:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:23,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:56:23,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:23,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:23,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:23,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292855042] [2023-11-24 23:56:23,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292855042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:23,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:23,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:56:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164062517] [2023-11-24 23:56:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:56:23,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:56:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:56:23,817 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:24,451 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2023-11-24 23:56:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:56:24,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 23:56:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:24,463 INFO L225 Difference]: With dead ends: 42 [2023-11-24 23:56:24,463 INFO L226 Difference]: Without dead ends: 20 [2023-11-24 23:56:24,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:56:24,470 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:24,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:56:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-24 23:56:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-24 23:56:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-24 23:56:24,505 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2023-11-24 23:56:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:24,506 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-24 23:56:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-24 23:56:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:56:24,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:24,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:24,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:24,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:24,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:24,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1895994719, now seen corresponding path program 1 times [2023-11-24 23:56:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:24,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575360881] [2023-11-24 23:56:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:24,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:24,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:24,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:24,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:56:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:24,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:56:24,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:24,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:24,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575360881] [2023-11-24 23:56:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575360881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399324099] [2023-11-24 23:56:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:24,992 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:26,238 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-24 23:56:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:26,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 23:56:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:26,242 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:56:26,242 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 23:56:26,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:26,245 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:26,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:56:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 23:56:26,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-11-24 23:56:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-11-24 23:56:26,253 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2023-11-24 23:56:26,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:26,253 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-11-24 23:56:26,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:26,254 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-24 23:56:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:56:26,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:26,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:26,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:56:26,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:26,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:26,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1676818693, now seen corresponding path program 1 times [2023-11-24 23:56:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677742466] [2023-11-24 23:56:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:26,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:26,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 23:56:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:26,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:26,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:26,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:26,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677742466] [2023-11-24 23:56:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677742466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1091357572] [2023-11-24 23:56:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:26,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:26,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:56:27,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:56:27,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-24 23:56:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:27,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:27,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:27,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1091357572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:27,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549502308] [2023-11-24 23:56:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:27,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:27,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:27,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:56:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:27,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:56:27,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:27,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549502308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-24 23:56:27,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4, 4] total 8 [2023-11-24 23:56:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414579874] [2023-11-24 23:56:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:27,937 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:28,503 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-11-24 23:56:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:56:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 23:56:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:28,512 INFO L225 Difference]: With dead ends: 29 [2023-11-24 23:56:28,512 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 23:56:28,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:28,514 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:56:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 23:56:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-24 23:56:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-24 23:56:28,534 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2023-11-24 23:56:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:28,536 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-24 23:56:28,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-24 23:56:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:56:28,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:28,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:28,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:28,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:28,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:29,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:29,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:29,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:29,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1282618631, now seen corresponding path program 1 times [2023-11-24 23:56:29,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:29,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771728440] [2023-11-24 23:56:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:29,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:29,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:29,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:29,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 23:56:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:29,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:29,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:29,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:29,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771728440] [2023-11-24 23:56:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771728440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1988854462] [2023-11-24 23:56:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:29,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:56:29,831 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:56:29,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-24 23:56:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:30,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:30,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:30,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1988854462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083633683] [2023-11-24 23:56:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:30,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:30,667 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:30,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:56:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:31,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:31,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:31,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083633683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:31,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:56:31,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-11-24 23:56:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203800642] [2023-11-24 23:56:31,128 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:31,130 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,793 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2023-11-24 23:56:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:56:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-24 23:56:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,795 INFO L225 Difference]: With dead ends: 39 [2023-11-24 23:56:31,795 INFO L226 Difference]: Without dead ends: 29 [2023-11-24 23:56:31,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:31,797 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 48 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:56:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-24 23:56:31,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-24 23:56:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-24 23:56:31,804 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 22 [2023-11-24 23:56:31,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,804 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-24 23:56:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-24 23:56:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:56:31,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:31,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:32,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:32,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:32,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:32,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1525709447, now seen corresponding path program 2 times [2023-11-24 23:56:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413892348] [2023-11-24 23:56:32,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:56:32,413 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 [2023-11-24 23:56:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:32,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:32,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:56:32,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:56:32,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:32,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:32,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:33,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:33,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:56:33,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413892348] [2023-11-24 23:56:33,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413892348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:33,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [990147156] [2023-11-24 23:56:33,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:56:33,425 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:56:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:56:33,427 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:56:33,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-24 23:56:34,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:56:34,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:34,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:34,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:34,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [990147156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416038980] [2023-11-24 23:56:34,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:56:34,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:34,589 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:34,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:56:34,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:56:34,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:35,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:35,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:35,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:56:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416038980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:35,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:56:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-24 23:56:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617777048] [2023-11-24 23:56:35,268 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:56:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:35,271 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:37,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:39,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:39,611 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2023-11-24 23:56:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:56:39,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-24 23:56:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:39,613 INFO L225 Difference]: With dead ends: 42 [2023-11-24 23:56:39,613 INFO L226 Difference]: Without dead ends: 35 [2023-11-24 23:56:39,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:56:39,617 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:39,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 44 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-24 23:56:39,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-24 23:56:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-24 23:56:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-24 23:56:39,648 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2023-11-24 23:56:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:39,649 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-24 23:56:39,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-24 23:56:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:56:39,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:39,652 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:39,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:39,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:40,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:40,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:40,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:40,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1619969659, now seen corresponding path program 3 times [2023-11-24 23:56:40,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:56:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283564863] [2023-11-24 23:56:40,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:56:40,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:56:40,262 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:56:40,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:56:42,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-24 23:56:42,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-24 23:56:42,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:56:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:56:45,337 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-24 23:56:45,337 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:56:45,338 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:56:45,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -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)] Ended with exit code 0 [2023-11-24 23:56:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:56:45,543 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-11-24 23:56:45,546 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:56:45,581 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-11-24 23:56:45,584 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem103 could not be translated [2023-11-24 23:56:45,584 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated [2023-11-24 23:56:45,584 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem107 could not be translated [2023-11-24 23:56:45,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-24 23:56:45,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-24 23:56:45,587 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-11-24 23:56:45,594 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 23:56:45,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem109 could not be translated [2023-11-24 23:56:45,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:56:45 BoogieIcfgContainer [2023-11-24 23:56:45,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:56:45,611 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:56:45,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:56:45,611 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:56:45,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:23" (3/4) ... [2023-11-24 23:56:45,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:56:45,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:56:45,616 INFO L158 Benchmark]: Toolchain (without parser) took 27071.92ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 71.8MB in the beginning and 71.6MB in the end (delta: 215.3kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-24 23:56:45,616 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 71.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 72.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:45,616 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1617.41ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 64.2MB in the end (delta: 7.5MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2023-11-24 23:56:45,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.90ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 60.6MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:56:45,617 INFO L158 Benchmark]: Boogie Preprocessor took 78.63ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 59.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:56:45,618 INFO L158 Benchmark]: RCFGBuilder took 3018.10ms. Allocated memory is still 98.6MB. Free memory was 58.5MB in the beginning and 41.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 23:56:45,618 INFO L158 Benchmark]: TraceAbstraction took 22257.47ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 41.1MB in the beginning and 71.6MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:45,618 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 119.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:45,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 71.3MB. Free memory was 48.0MB in the beginning and 47.9MB in the end (delta: 72.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1617.41ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 64.2MB in the end (delta: 7.5MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.90ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 60.6MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.63ms. Allocated memory is still 98.6MB. Free memory was 60.6MB in the beginning and 59.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3018.10ms. Allocated memory is still 98.6MB. Free memory was 58.5MB in the beginning and 41.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22257.47ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 41.1MB in the beginning and 71.6MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 119.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem105 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem107 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem109 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 873]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of expf at line 854, overapproximation of __builtin_isinf_sign at line 871. Possible FailurePath: [L863] float x[4], y[4]; [L864] x[0] = __VERIFIER_nondet_float() [L865] x[1] = __VERIFIER_nondet_float() [L866] x[2] = __VERIFIER_nondet_float() [L867] x[3] = __VERIFIER_nondet_float() [L868] EXPR x[0] VAL [x={5:0}, y={3:0}] [L868] COND FALSE !(!(!__builtin_isnan (x[0]) && !__builtin_isinf_sign (x[0]))) [L869] EXPR x[1] VAL [x={5:0}, y={3:0}] [L869] COND FALSE !(!(!__builtin_isnan (x[1]) && !__builtin_isinf_sign (x[1]))) [L870] EXPR x[2] VAL [x={5:0}, y={3:0}] [L870] COND FALSE !(!(!__builtin_isnan (x[2]) && !__builtin_isinf_sign (x[2]))) [L871] EXPR x[3] VAL [x={5:0}, y={3:0}] [L871] COND FALSE !(!(!__builtin_isnan (x[3]) && !__builtin_isinf_sign (x[3]))) [L872] CALL softmax(x, y, 4) [L847] int i; [L848] EXPR x[0] [L848] float max = x[0]; [L849] i = 1 VAL [\old(n)=4, i=1, max=0.0, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=1, max=0.0, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=2, max=2.0, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=2, max=2.0, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=3, max=36893488147419103000, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L849] COND TRUE i < n [L850] EXPR x[i] VAL [\old(n)=4, i=3, max=36893488147419103000, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L850] COND TRUE x[i] > max [L851] EXPR x[i] [L851] max = x[i] [L849] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L849] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L852] float sum = 0.0f; [L853] i = 0 VAL [\old(n)=4, i=0, max=158456325028528680000000000000, n=4, sum=0.0, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=1, max=158456325028528680000000000000, n=4, sum=-0.00000000000000009022935090820689, x={5:0}, x={5:0}, y={3:0}, y={3:0}, z=-0.00000000000000009022935090820689] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=2, max=158456325028528680000000000000, n=4, sum=0.000000000000003550978955324524, x={5:0}, x={5:0}, y={3:0}, y={3:0}, z=0.000000000000003641208292997841] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=3, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017359940253976885, x={5:0}, x={5:0}, y={3:0}, y={3:0}, z=-0.000000000000003552714949349922] [L853] COND TRUE i < n [L854] EXPR x[i] [L854] float z = expf(x[i] - max); [L855] sum += z [L856] y[i] = z [L853] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}, z=0.000000000000000000008046864697704138] [L853] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}, z=0.000000000000000000008046864697704138] [L858] i = 0 VAL [\old(n)=4, i=0, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=1, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=2, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=3, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L858] COND TRUE i < n [L859] EXPR y[i] [L859] y[i] /= sum [L858] ++i VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L858] COND FALSE !(i < n) VAL [\old(n)=4, i=4, max=158456325028528680000000000000, n=4, sum=-0.0000000000000000017279472123987727, x={5:0}, x={5:0}, y={3:0}, y={3:0}] [L872] RET softmax(x, y, 4) [L873] EXPR y[2] VAL [x={5:0}, y={3:0}] [L873] COND TRUE !(__builtin_islessequal(y[2], 1.0f)) [L873] reach_error() VAL [x={5:0}, y={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 86 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 417 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 813 SizeOfPredicates, 10 NumberOfNonLiveVariables, 936 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 91/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:56:45,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff25bd6a-9223-491b-8d85-209a5298e30e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample