./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf4cf7048927b9d4b57c94a7020b5b256c9c5df8e0bc64b8664ff84a8f16bc96 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:56:38,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:56:38,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:56:38,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:56:38,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:56:38,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:56:38,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:56:38,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:56:38,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:56:38,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:56:38,998 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:56:38,999 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:56:38,999 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:56:39,000 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:56:39,000 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:56:39,001 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:56:39,001 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:56:39,002 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:56:39,002 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:56:39,003 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:56:39,003 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:56:39,008 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:56:39,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:56:39,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:56:39,010 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:56:39,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:56:39,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:56:39,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:56:39,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:56:39,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:56:39,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:56:39,012 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:56:39,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:56:39,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:56:39,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:56:39,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:56:39,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:56:39,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:56:39,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:56:39,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:56:39,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:56:39,014 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:56:39,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:56:39,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:56:39,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:56:39,015 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:56:39,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:56:39,015 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_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf4cf7048927b9d4b57c94a7020b5b256c9c5df8e0bc64b8664ff84a8f16bc96 [2023-12-02 15:56:39,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:56:39,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:56:39,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:56:39,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:56:39,269 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:56:39,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i [2023-12-02 15:56:42,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:56:42,354 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:56:42,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i [2023-12-02 15:56:42,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/56ad2dbbe/d3573ad6299e4e22a2e091a7329fba24/FLAG8c28a3f31 [2023-12-02 15:56:42,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/56ad2dbbe/d3573ad6299e4e22a2e091a7329fba24 [2023-12-02 15:56:42,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:56:42,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:56:42,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:56:42,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:56:42,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:56:42,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:56:42" (1/1) ... [2023-12-02 15:56:42,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e911e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:42, skipping insertion in model container [2023-12-02 15:56:42,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:56:42" (1/1) ... [2023-12-02 15:56:42,490 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:56:43,429 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:245) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1486) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:269) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:251) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:3086) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2927) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:142) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1156) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1088) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1073) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:386) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1512) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:157) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3421) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2441) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:611) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 15:56:43,434 INFO L158 Benchmark]: Toolchain (without parser) took 1030.18ms. Allocated memory is still 178.3MB. Free memory was 133.2MB in the beginning and 111.3MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 15:56:43,435 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:56:43,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1027.94ms. Allocated memory is still 178.3MB. Free memory was 132.9MB in the beginning and 111.3MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 15:56:43,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1027.94ms. Allocated memory is still 178.3MB. Free memory was 132.9MB in the beginning and 111.3MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf4cf7048927b9d4b57c94a7020b5b256c9c5df8e0bc64b8664ff84a8f16bc96 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:56:45,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:56:45,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:56:45,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:56:45,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:56:45,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:56:45,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:56:45,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:56:45,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:56:45,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:56:45,336 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:56:45,336 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:56:45,337 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:56:45,337 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:56:45,338 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:56:45,338 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:56:45,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:56:45,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:56:45,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:56:45,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:56:45,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:56:45,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:56:45,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:56:45,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:56:45,343 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:56:45,344 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:56:45,344 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:56:45,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:56:45,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:56:45,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:56:45,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:56:45,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:56:45,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:56:45,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:56:45,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:56:45,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:56:45,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:56:45,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:56:45,348 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:56:45,348 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:45,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:56:45,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:56:45,349 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:56:45,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:56:45,350 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_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf4cf7048927b9d4b57c94a7020b5b256c9c5df8e0bc64b8664ff84a8f16bc96 [2023-12-02 15:56:45,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:56:45,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:56:45,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:56:45,654 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:56:45,655 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:56:45,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i [2023-12-02 15:56:48,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:56:48,911 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:56:48,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i [2023-12-02 15:56:48,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/51b3af722/59f719f0adb2442aae7302aa8c650598/FLAG447858060 [2023-12-02 15:56:48,956 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/data/51b3af722/59f719f0adb2442aae7302aa8c650598 [2023-12-02 15:56:48,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:56:48,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:56:48,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:56:48,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:56:48,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:56:48,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:56:48" (1/1) ... [2023-12-02 15:56:48,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c68760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:48, skipping insertion in model container [2023-12-02 15:56:48,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:56:48" (1/1) ... [2023-12-02 15:56:49,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:56:49,922 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_019c1982-5cd9-45d0-a320-f881778256ea/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i[71475,71488] [2023-12-02 15:56:50,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:56:50,226 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:56:50,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:56:50,279 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_019c1982-5cd9-45d0-a320-f881778256ea/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i[71475,71488] [2023-12-02 15:56:50,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:56:50,375 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:56:50,440 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_019c1982-5cd9-45d0-a320-f881778256ea/sv-benchmarks/c/neural-networks/poly_8_8_8_8_thresh_0_safe.c-amalgamation.i[71475,71488] [2023-12-02 15:56:50,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:56:50,837 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:56:50,837 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:56:50,837 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:56:50,837 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:56:50,843 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:56:50,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50 WrapperNode [2023-12-02 15:56:50,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:56:50,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:56:50,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:56:50,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:56:50,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:50,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:50,992 INFO L138 Inliner]: procedures = 779, calls = 762, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1354 [2023-12-02 15:56:50,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:56:50,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:56:50,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:56:50,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:56:51,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:56:51,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:56:51,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:56:51,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:56:51,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (1/1) ... [2023-12-02 15:56:51,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:56:51,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:56:51,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:56:51,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:56:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 15:56:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 15:56:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:56:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:56:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:56:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:56:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:56:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:56:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:56:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:56:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 15:56:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 15:56:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 15:56:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:56:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 15:56:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 15:56:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 15:56:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:56:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:56:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 15:56:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 15:56:51,445 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:56:51,448 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:57:13,033 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:57:13,145 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:57:13,146 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 15:57:13,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:57:13 BoogieIcfgContainer [2023-12-02 15:57:13,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:57:13,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:57:13,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:57:13,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:57:13,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:56:48" (1/3) ... [2023-12-02 15:57:13,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c8c1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:57:13, skipping insertion in model container [2023-12-02 15:57:13,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:56:50" (2/3) ... [2023-12-02 15:57:13,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c8c1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:57:13, skipping insertion in model container [2023-12-02 15:57:13,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:57:13" (3/3) ... [2023-12-02 15:57:13,154 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_8_8_8_8_thresh_0_safe.c-amalgamation.i [2023-12-02 15:57:13,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:57:13,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:57:13,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:57:13,221 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;@680eeb29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:57:13,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:57:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 15:57:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 15:57:13,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:13,252 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:13,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:57:13,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1083831927, now seen corresponding path program 1 times [2023-12-02 15:57:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261350375] [2023-12-02 15:57:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:57:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:13,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:57:13,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:57:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:16,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:57:17,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:57:17,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:17,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261350375] [2023-12-02 15:57:17,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261350375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:17,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:57:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640610126] [2023-12-02 15:57:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:57:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:57:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:57:17,084 INFO L87 Difference]: Start difference. First operand has 163 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 15:57:19,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:21,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:24,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:28,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:30,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:30,852 INFO L93 Difference]: Finished difference Result 324 states and 568 transitions. [2023-12-02 15:57:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:57:30,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 116 [2023-12-02 15:57:30,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:30,866 INFO L225 Difference]: With dead ends: 324 [2023-12-02 15:57:30,866 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 15:57:30,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:57:30,879 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:30,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 15:57:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 15:57:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 15:57:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 15:57:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 232 transitions. [2023-12-02 15:57:30,935 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 232 transitions. Word has length 116 [2023-12-02 15:57:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:30,936 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 232 transitions. [2023-12-02 15:57:30,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 15:57:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 232 transitions. [2023-12-02 15:57:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 15:57:30,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:30,942 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:31,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:57:31,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:57:31,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:57:31,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 845100299, now seen corresponding path program 1 times [2023-12-02 15:57:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095311079] [2023-12-02 15:57:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:31,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:57:31,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:31,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:57:31,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:57:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:38,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:57:38,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 15:57:38,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:38,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:38,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095311079] [2023-12-02 15:57:38,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095311079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:38,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:57:38,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:57:38,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043910708] [2023-12-02 15:57:38,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:38,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:57:38,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:57:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:57:38,781 INFO L87 Difference]: Start difference. First operand 161 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:57:40,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:41,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:45,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:48,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:51,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:59,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:59,463 INFO L93 Difference]: Finished difference Result 324 states and 470 transitions. [2023-12-02 15:57:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:57:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 116 [2023-12-02 15:57:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:59,469 INFO L225 Difference]: With dead ends: 324 [2023-12-02 15:57:59,469 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 15:57:59,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:57:59,472 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 199 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:59,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 501 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 1 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 15:57:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 15:57:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-02 15:57:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:57:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 15:57:59,498 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 116 [2023-12-02 15:57:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:59,499 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 15:57:59,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:57:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 15:57:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 15:57:59,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:59,503 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:59,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:57:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:57:59,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:57:59,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1991736503, now seen corresponding path program 1 times [2023-12-02 15:57:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:57:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930531720] [2023-12-02 15:57:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:59,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:57:59,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:57:59,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:57:59,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:58:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:58:06,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:58:06,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:58:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 15:58:07,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:58:07,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:58:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930531720] [2023-12-02 15:58:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930531720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:58:07,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:58:07,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:58:07,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504495394] [2023-12-02 15:58:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:58:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:58:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:58:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:58:07,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:58:07,167 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:58:09,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:10,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:12,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:14,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:15,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:18,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:21,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:26,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:28,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:32,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:34,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:58:34,582 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 15:58:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:58:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 121 [2023-12-02 15:58:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:58:34,586 INFO L225 Difference]: With dead ends: 336 [2023-12-02 15:58:34,586 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 15:58:34,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:58:34,589 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 319 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:58:34,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 295 Invalid, 4 Unknown, 0 Unchecked, 27.3s Time] [2023-12-02 15:58:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 15:58:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 15:58:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:58:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 15:58:34,613 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 121 [2023-12-02 15:58:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:58:34,613 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 15:58:34,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:58:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 15:58:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 15:58:34,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:58:34,617 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:58:34,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:58:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:58:34,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:58:34,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:58:34,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1618438674, now seen corresponding path program 1 times [2023-12-02 15:58:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:58:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697822113] [2023-12-02 15:58:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:58:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:58:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:58:34,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:58:34,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:58:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:58:41,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:58:41,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:58:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 15:58:42,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:58:42,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:58:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697822113] [2023-12-02 15:58:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697822113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:58:42,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:58:42,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:58:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548291960] [2023-12-02 15:58:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:58:42,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:58:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:58:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:58:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:58:42,120 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:58:44,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:46,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:51,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:55,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:58:59,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:00,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:05,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:06,213 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 15:59:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:59:06,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 131 [2023-12-02 15:59:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:06,242 INFO L225 Difference]: With dead ends: 336 [2023-12-02 15:59:06,242 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 15:59:06,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:59:06,245 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 317 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:06,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 510 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 4 Unknown, 0 Unchecked, 24.0s Time] [2023-12-02 15:59:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 15:59:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 15:59:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:59:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 15:59:06,267 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 131 [2023-12-02 15:59:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 15:59:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:59:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 15:59:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 15:59:06,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:06,272 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:06,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:59:06,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:06,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:06,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash 516918859, now seen corresponding path program 1 times [2023-12-02 15:59:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586187583] [2023-12-02 15:59:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:06,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:06,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:06,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:59:06,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 15:59:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:13,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:59:13,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 15:59:13,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:13,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586187583] [2023-12-02 15:59:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586187583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:13,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:59:13,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:59:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509364536] [2023-12-02 15:59:13,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:13,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:59:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:59:13,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:59:13,741 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:59:16,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:17,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:19,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:22,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:25,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:29,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:30,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:32,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:35,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:37,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:39,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:42,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:43,081 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 15:59:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:59:43,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 132 [2023-12-02 15:59:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:43,085 INFO L225 Difference]: With dead ends: 336 [2023-12-02 15:59:43,085 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 15:59:43,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:59:43,087 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 191 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:43,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 294 Invalid, 5 Unknown, 0 Unchecked, 29.3s Time] [2023-12-02 15:59:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 15:59:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 15:59:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 15:59:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 15:59:43,107 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 132 [2023-12-02 15:59:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:43,107 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 15:59:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:59:43,108 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 15:59:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:59:43,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:43,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:43,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 15:59:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:43,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1316936704, now seen corresponding path program 1 times [2023-12-02 15:59:43,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547443636] [2023-12-02 15:59:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:43,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:43,317 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:59:43,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 15:59:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:50,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:59:50,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 15:59:51,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:51,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547443636] [2023-12-02 15:59:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547443636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:51,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:59:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:59:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837564119] [2023-12-02 15:59:51,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:51,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:59:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:51,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:59:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:59:51,138 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:59:53,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:54,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:56,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:59:58,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:03,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:08,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:09,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:14,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:15,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:16,222 INFO L93 Difference]: Finished difference Result 336 states and 484 transitions. [2023-12-02 16:00:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:00:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 141 [2023-12-02 16:00:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:16,246 INFO L225 Difference]: With dead ends: 336 [2023-12-02 16:00:16,246 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:00:16,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:00:16,248 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 356 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:16,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 478 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 267 Invalid, 4 Unknown, 0 Unchecked, 25.0s Time] [2023-12-02 16:00:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:00:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-02 16:00:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:00:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 239 transitions. [2023-12-02 16:00:16,262 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 239 transitions. Word has length 141 [2023-12-02 16:00:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:16,262 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 239 transitions. [2023-12-02 16:00:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:00:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 239 transitions. [2023-12-02 16:00:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 16:00:16,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:16,265 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:16,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 16:00:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:16,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:00:16,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -934649, now seen corresponding path program 1 times [2023-12-02 16:00:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:00:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859359247] [2023-12-02 16:00:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:16,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:16,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:00:16,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:00:16,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 16:00:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:24,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:00:24,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:00:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-02 16:00:25,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:00:25,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:00:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859359247] [2023-12-02 16:00:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859359247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:00:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132470257] [2023-12-02 16:00:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:25,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:00:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:00:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:00:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:00:25,413 INFO L87 Difference]: Start difference. First operand 167 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:00:27,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:29,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:32,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:35,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:39,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:40,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:45,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:47,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:51,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:52,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:00:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:52,887 INFO L93 Difference]: Finished difference Result 177 states and 249 transitions. [2023-12-02 16:00:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:00:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 140 [2023-12-02 16:00:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:52,913 INFO L225 Difference]: With dead ends: 177 [2023-12-02 16:00:52,913 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 16:00:52,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:00:52,914 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 184 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:52,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 507 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 279 Invalid, 6 Unknown, 0 Unchecked, 27.4s Time] [2023-12-02 16:00:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 16:00:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 16:00:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:00:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 235 transitions. [2023-12-02 16:00:52,945 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 235 transitions. Word has length 140 [2023-12-02 16:00:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:52,946 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 235 transitions. [2023-12-02 16:00:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:00:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 235 transitions. [2023-12-02 16:00:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:00:52,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:52,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:53,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 16:00:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:53,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:00:53,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2127001393, now seen corresponding path program 1 times [2023-12-02 16:00:53,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:00:53,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792205242] [2023-12-02 16:00:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:53,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:00:53,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:00:53,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 16:01:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:01:00,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:01:01,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:01:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-02 16:01:02,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:01:02,205 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:01:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792205242] [2023-12-02 16:01:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792205242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:01:02,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:01:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:01:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885013200] [2023-12-02 16:01:02,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:01:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:01:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:01:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:01:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:01:02,207 INFO L87 Difference]: Start difference. First operand 165 states and 235 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:01:04,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:06,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:07,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:09,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:17,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:19,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:23,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:01:23,617 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2023-12-02 16:01:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:01:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 141 [2023-12-02 16:01:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:01:23,643 INFO L225 Difference]: With dead ends: 175 [2023-12-02 16:01:23,644 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 16:01:23,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:01:23,645 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 303 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:01:23,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 500 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 273 Invalid, 3 Unknown, 0 Unchecked, 21.3s Time] [2023-12-02 16:01:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 16:01:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 16:01:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 15 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 16:01:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 231 transitions. [2023-12-02 16:01:23,659 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 231 transitions. Word has length 141 [2023-12-02 16:01:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:01:23,659 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 231 transitions. [2023-12-02 16:01:23,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:01:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 231 transitions. [2023-12-02 16:01:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:01:23,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:01:23,662 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:01:23,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 16:01:23,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:23,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:01:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:01:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1374826726, now seen corresponding path program 1 times [2023-12-02 16:01:23,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:01:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089104860] [2023-12-02 16:01:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:01:23,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:01:23,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:01:23,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 16:01:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:01:31,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:01:31,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:01:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:01:32,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:01:32,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:01:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089104860] [2023-12-02 16:01:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089104860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:01:32,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:01:32,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:01:32,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369936245] [2023-12-02 16:01:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:01:32,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:01:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:01:32,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:01:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:01:32,988 INFO L87 Difference]: Start difference. First operand 163 states and 231 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:01:35,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:36,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:37,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:40,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:47,108 WARN L539 Checker$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 [] [2023-12-02 16:01:49,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:50,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:53,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:55,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:01:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:01:55,418 INFO L93 Difference]: Finished difference Result 167 states and 234 transitions. [2023-12-02 16:01:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:01:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 146 [2023-12-02 16:01:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:01:55,444 INFO L225 Difference]: With dead ends: 167 [2023-12-02 16:01:55,444 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 16:01:55,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:01:55,445 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 301 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:01:55,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 498 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 3 Unknown, 0 Unchecked, 22.4s Time] [2023-12-02 16:01:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 16:01:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-02 16:01:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:01:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2023-12-02 16:01:55,471 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 146 [2023-12-02 16:01:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:01:55,472 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2023-12-02 16:01:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:01:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2023-12-02 16:01:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:01:55,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:01:55,474 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:01:55,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 16:01:55,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:55,675 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:01:55,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:01:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -712448106, now seen corresponding path program 1 times [2023-12-02 16:01:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:01:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710865385] [2023-12-02 16:01:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:01:55,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:01:55,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:01:55,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 16:02:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:02:03,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:02:03,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:02:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 16:02:04,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:02:04,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:02:04,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710865385] [2023-12-02 16:02:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710865385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:02:04,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:02:04,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:02:04,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711257386] [2023-12-02 16:02:04,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:02:04,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:02:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:02:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:02:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:02:04,901 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:02:07,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:09,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:10,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:13,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:18,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:20,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:22,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:24,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:28,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:30,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:31,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:33,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:02:33,338 INFO L93 Difference]: Finished difference Result 173 states and 240 transitions. [2023-12-02 16:02:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:02:33,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 143 [2023-12-02 16:02:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:02:33,364 INFO L225 Difference]: With dead ends: 173 [2023-12-02 16:02:33,364 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 16:02:33,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:02:33,365 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 177 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:02:33,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 493 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 28.4s Time] [2023-12-02 16:02:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 16:02:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 16:02:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:02:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2023-12-02 16:02:33,378 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 143 [2023-12-02 16:02:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:02:33,379 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2023-12-02 16:02:33,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:02:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2023-12-02 16:02:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 16:02:33,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:02:33,380 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:02:33,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 16:02:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:02:33,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:02:33,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:02:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash -11155817, now seen corresponding path program 1 times [2023-12-02 16:02:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:02:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69959337] [2023-12-02 16:02:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:02:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:02:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:02:33,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:02:33,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 16:02:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:02:41,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:02:41,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:02:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-02 16:02:42,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:02:42,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:02:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69959337] [2023-12-02 16:02:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69959337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:02:42,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:02:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:02:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682183344] [2023-12-02 16:02:42,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:02:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:02:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:02:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:02:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:02:42,871 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:02:45,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:46,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:47,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:56,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:58,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:03:00,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:03:02,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:03:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:03:02,115 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2023-12-02 16:03:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:03:02,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 144 [2023-12-02 16:03:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:03:02,138 INFO L225 Difference]: With dead ends: 171 [2023-12-02 16:03:02,138 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 16:03:02,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:03:02,139 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 295 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:03:02,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 486 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 4 Unknown, 0 Unchecked, 19.2s Time] [2023-12-02 16:03:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 16:03:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 16:03:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (15), 15 states have call predecessors, (15), 13 states have call successors, (15) [2023-12-02 16:03:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2023-12-02 16:03:02,163 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 144 [2023-12-02 16:03:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:03:02,164 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2023-12-02 16:03:02,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 16:03:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2023-12-02 16:03:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 16:03:02,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:03:02,166 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:03:02,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 16:03:02,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:03:02,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:03:02,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:03:02,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1894995928, now seen corresponding path program 1 times [2023-12-02 16:03:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:03:02,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279628866] [2023-12-02 16:03:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:03:02,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:03:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:03:02,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:03:02,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019c1982-5cd9-45d0-a320-f881778256ea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 16:05:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:05:13,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-02 16:05:13,642 INFO L285 TraceCheckSpWp]: Computing forward predicates...