./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/poly_16_16_16_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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 cd2991f1dfbcaa83cb667171e0a72bee3be166208dbc01c9e27a220814db3d16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:39:32,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:39:32,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:39:32,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:39:32,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:39:32,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:39:32,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:39:32,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:39:32,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:39:32,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:39:32,136 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:39:32,136 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:39:32,137 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:39:32,137 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:39:32,138 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:39:32,138 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:39:32,139 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:39:32,139 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:39:32,140 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:39:32,140 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:39:32,141 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:39:32,142 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:39:32,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:39:32,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:39:32,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:39:32,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:39:32,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:39:32,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:39:32,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:39:32,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:39:32,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:39:32,146 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:39:32,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:39:32,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:39:32,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:39:32,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:39:32,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:39:32,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:39:32,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:39:32,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:39:32,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:39:32,148 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:39:32,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:39:32,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:39:32,149 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:39:32,149 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:39:32,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:39:32,149 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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd2991f1dfbcaa83cb667171e0a72bee3be166208dbc01c9e27a220814db3d16 [2023-12-02 15:39:32,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:39:32,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:39:32,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:39:32,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:39:32,409 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:39:32,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i [2023-12-02 15:39:35,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:39:35,481 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:39:35,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i [2023-12-02 15:39:35,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/0ea4baf81/4990f61d1ef14ab7b451bb761ca5c618/FLAG47769d7ae [2023-12-02 15:39:35,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/0ea4baf81/4990f61d1ef14ab7b451bb761ca5c618 [2023-12-02 15:39:35,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:39:35,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:39:35,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:39:35,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:39:35,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:39:35,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:39:35" (1/1) ... [2023-12-02 15:39:35,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3b0cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:35, skipping insertion in model container [2023-12-02 15:39:35,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:39:35" (1/1) ... [2023-12-02 15:39:35,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:39:36,354 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 15:39:36,357 INFO L158 Benchmark]: Toolchain (without parser) took 838.09ms. Allocated memory is still 157.3MB. Free memory was 108.0MB in the beginning and 87.6MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:39:36,358 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:39:36,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 836.30ms. Allocated memory is still 157.3MB. Free memory was 108.0MB in the beginning and 87.6MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:39:36,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 836.30ms. Allocated memory is still 157.3MB. Free memory was 108.0MB in the beginning and 87.6MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fabs: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 cd2991f1dfbcaa83cb667171e0a72bee3be166208dbc01c9e27a220814db3d16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:39:38,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:39:38,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:39:38,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:39:38,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:39:38,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:39:38,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:39:38,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:39:38,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:39:38,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:39:38,128 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:39:38,129 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:39:38,130 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:39:38,130 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:39:38,131 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:39:38,131 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:39:38,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:39:38,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:39:38,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:39:38,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:39:38,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:39:38,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:39:38,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:39:38,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:39:38,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:39:38,137 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:39:38,138 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:39:38,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:39:38,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:39:38,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:39:38,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:39:38,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:39:38,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:39:38,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:39:38,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:39:38,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:39:38,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:39:38,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:39:38,142 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:39:38,142 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:39:38,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:39:38,143 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:39:38,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:39:38,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:39:38,144 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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd2991f1dfbcaa83cb667171e0a72bee3be166208dbc01c9e27a220814db3d16 [2023-12-02 15:39:38,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:39:38,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:39:38,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:39:38,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:39:38,464 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:39:38,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i [2023-12-02 15:39:41,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:39:41,583 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:39:41,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i [2023-12-02 15:39:41,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/86101f5da/fe4ee8c995194732adbb57d09ac1b0a0/FLAGc8fe5056e [2023-12-02 15:39:41,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/data/86101f5da/fe4ee8c995194732adbb57d09ac1b0a0 [2023-12-02 15:39:41,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:39:41,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:39:41,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:39:41,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:39:41,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:39:41,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:39:41" (1/1) ... [2023-12-02 15:39:41,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713bdf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:41, skipping insertion in model container [2023-12-02 15:39:41,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:39:41" (1/1) ... [2023-12-02 15:39:41,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:39:42,537 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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i[71465,71478] [2023-12-02 15:39:42,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:39:42,834 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:39:42,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:39:42,887 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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i[71465,71478] [2023-12-02 15:39:42,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:39:42,980 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:39:43,019 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_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/sv-benchmarks/c/neural-networks/poly_16_16_16_thresh_0_safe.c-amalgamation.i[71465,71478] [2023-12-02 15:39:43,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:39:43,334 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:39:43,334 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:39:43,334 WARN L675 CHandler]: The function feof is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:39:43,335 WARN L675 CHandler]: The function activation is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:39:43,340 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:39:43,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43 WrapperNode [2023-12-02 15:39:43,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:39:43,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:39:43,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:39:43,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:39:43,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,506 INFO L138 Inliner]: procedures = 779, calls = 1037, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1625 [2023-12-02 15:39:43,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:39:43,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:39:43,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:39:43,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:39:43,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:39:43,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:39:43,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:39:43,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:39:43,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (1/1) ... [2023-12-02 15:39:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:39:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:39:43,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:39:43,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:39:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 15:39:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2023-12-02 15:39:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:39:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:39:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:39:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:39:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:39:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:39:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:39:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:39:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_idx2sub [2023-12-02 15:39:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_idx2sub [2023-12-02 15:39:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 15:39:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~TO~VOID [2023-12-02 15:39:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:39:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:39:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 15:39:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 15:39:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:39:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_dense [2023-12-02 15:39:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_dense [2023-12-02 15:39:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 15:39:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:39:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:39:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure k2c_sub2idx [2023-12-02 15:39:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure k2c_sub2idx [2023-12-02 15:39:43,957 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:39:43,960 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:40:05,499 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:40:05,611 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:40:05,611 INFO L309 CfgBuilder]: Removed 44 assume(true) statements. [2023-12-02 15:40:05,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:40:05 BoogieIcfgContainer [2023-12-02 15:40:05,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:40:05,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:40:05,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:40:05,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:40:05,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:39:41" (1/3) ... [2023-12-02 15:40:05,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341f78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:40:05, skipping insertion in model container [2023-12-02 15:40:05,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:39:43" (2/3) ... [2023-12-02 15:40:05,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341f78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:40:05, skipping insertion in model container [2023-12-02 15:40:05,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:40:05" (3/3) ... [2023-12-02 15:40:05,619 INFO L112 eAbstractionObserver]: Analyzing ICFG poly_16_16_16_thresh_0_safe.c-amalgamation.i [2023-12-02 15:40:05,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:40:05,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:40:05,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:40:05,679 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;@247dbb3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:40:05,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:40:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:40:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 15:40:05,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:05,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:05,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:05,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1473653052, now seen corresponding path program 1 times [2023-12-02 15:40:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:40:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419348628] [2023-12-02 15:40:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:05,730 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 15:40:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:40:05,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:05,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:12,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 4269 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:40:12,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-02 15:40:12,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:40:12,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:40:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419348628] [2023-12-02 15:40:12,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419348628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:12,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:40:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694147495] [2023-12-02 15:40:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:12,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:40:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:40:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:40:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:40:12,170 INFO L87 Difference]: Start difference. First operand has 162 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 144 states have internal predecessors, (254), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:40:14,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:15,826 WARN L539 Checker$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 15:40:19,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:22,301 WARN L539 Checker$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 15:40:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:23,555 INFO L93 Difference]: Finished difference Result 322 states and 563 transitions. [2023-12-02 15:40:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:40:23,558 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 94 [2023-12-02 15:40:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:23,568 INFO L225 Difference]: With dead ends: 322 [2023-12-02 15:40:23,568 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 15:40:23,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 93 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 15:40:23,578 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:23,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 15:40:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 15:40:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 15:40:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 142 states have (on average 1.4507042253521127) internal successors, (206), 142 states have internal predecessors, (206), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:40:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 230 transitions. [2023-12-02 15:40:23,619 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 230 transitions. Word has length 94 [2023-12-02 15:40:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:23,619 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 230 transitions. [2023-12-02 15:40:23,620 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, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 15:40:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 230 transitions. [2023-12-02 15:40:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 15:40:23,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:23,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:23,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:23,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:23,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1937805254, now seen corresponding path program 1 times [2023-12-02 15:40:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:40:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883447544] [2023-12-02 15:40:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:23,837 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 15:40:23,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:40:23,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:23,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:34,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 4270 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:40:34,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:40:34,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:40:34,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:40:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883447544] [2023-12-02 15:40:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883447544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:34,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:40:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301694816] [2023-12-02 15:40:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:40:34,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:40:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:40:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:40:34,866 INFO L87 Difference]: Start difference. First operand 160 states and 230 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:40:37,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:39,253 WARN L539 Checker$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 15:40:41,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:47,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:50,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:52,340 WARN L539 Checker$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 15:40:53,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:56,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:40:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:57,019 INFO L93 Difference]: Finished difference Result 322 states and 465 transitions. [2023-12-02 15:40:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:40:57,020 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2023-12-02 15:40:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:57,025 INFO L225 Difference]: With dead ends: 322 [2023-12-02 15:40:57,025 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 15:40:57,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 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 15:40:57,028 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 323 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:57,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 500 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 283 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2023-12-02 15:40:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 15:40:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 15:40:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 15:40:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 15:40:57,050 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 94 [2023-12-02 15:40:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:57,051 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 15:40:57,051 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:40:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 15:40:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 15:40:57,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:57,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:57,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:57,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:57,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:57,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1416041335, now seen corresponding path program 1 times [2023-12-02 15:40:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:40:57,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716658138] [2023-12-02 15:40:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:57,262 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 15:40:57,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:40:57,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:40:57,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:41:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:07,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 4273 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:41:07,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:41:07,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:07,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716658138] [2023-12-02 15:41:07,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716658138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:07,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:07,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:41:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028535423] [2023-12-02 15:41:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:41:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:41:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:41:07,966 INFO L87 Difference]: Start difference. First operand 166 states and 237 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:41:09,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:11,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:13,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:16,908 WARN L539 Checker$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 15:41:20,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:23,785 WARN L539 Checker$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 15:41:25,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:27,198 WARN L539 Checker$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 15:41:30,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:30,370 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 15:41:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:41:30,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2023-12-02 15:41:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:30,374 INFO L225 Difference]: With dead ends: 334 [2023-12-02 15:41:30,374 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 15:41:30,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 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 15:41:30,376 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 194 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:30,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 3 Unknown, 0 Unchecked, 22.3s Time] [2023-12-02 15:41:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 15:41:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 15:41:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 15:41:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 15:41:30,405 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 97 [2023-12-02 15:41:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:30,405 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 15:41:30,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:41:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 15:41:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 15:41:30,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:30,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:30,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:41:30,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:41:30,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:41:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1931763994, now seen corresponding path program 1 times [2023-12-02 15:41:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728254790] [2023-12-02 15:41:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:30,613 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 15:41:30,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:30,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:41:30,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:41:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:40,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:41:40,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:41:41,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:41,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:41,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728254790] [2023-12-02 15:41:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728254790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:41,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:41,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:41:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726441949] [2023-12-02 15:41:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:41,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:41:41,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:41:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:41:41,371 INFO L87 Difference]: Start difference. First operand 166 states and 237 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:41:43,691 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 15:41:45,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:47,702 WARN L539 Checker$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 15:41:53,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:56,802 WARN L539 Checker$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 15:41:58,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:02,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:02,629 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 15:42:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:42:02,630 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2023-12-02 15:42:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:02,632 INFO L225 Difference]: With dead ends: 334 [2023-12-02 15:42:02,633 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 15:42:02,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 15:42:02,635 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 315 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:02,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 5 Unknown, 0 Unchecked, 21.2s Time] [2023-12-02 15:42:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 15:42:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 15:42:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 15:42:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 15:42:02,653 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 106 [2023-12-02 15:42:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:02,654 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 15:42:02,654 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:42:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 15:42:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 15:42:02,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:02,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:02,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:02,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:02,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:02,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1715455482, now seen corresponding path program 1 times [2023-12-02 15:42:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38261612] [2023-12-02 15:42:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:02,863 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 15:42:02,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:02,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:02,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:13,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 4286 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:42:13,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-02 15:42:13,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:13,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:42:13,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38261612] [2023-12-02 15:42:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38261612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:13,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:42:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504970815] [2023-12-02 15:42:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:42:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:13,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:42:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:13,669 INFO L87 Difference]: Start difference. First operand 166 states and 237 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:42:15,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:17,983 WARN L539 Checker$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 15:42:19,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:27,669 WARN L539 Checker$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 15:42:29,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:31,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:33,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:35,649 WARN L539 Checker$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 15:42:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:36,609 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 15:42:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:42:36,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 110 [2023-12-02 15:42:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:36,612 INFO L225 Difference]: With dead ends: 334 [2023-12-02 15:42:36,612 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 15:42:36,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 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 15:42:36,614 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 191 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:36,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 509 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 5 Unknown, 0 Unchecked, 22.9s Time] [2023-12-02 15:42:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 15:42:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 15:42:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 15:42:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 15:42:36,627 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 110 [2023-12-02 15:42:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:36,628 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 15:42:36,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:42:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 15:42:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 15:42:36,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:36,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:36,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:36,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:36,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:36,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash -751874534, now seen corresponding path program 1 times [2023-12-02 15:42:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833885465] [2023-12-02 15:42:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:42:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:36,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:36,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:42:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:47,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 4258 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:42:47,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 15:42:48,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:48,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:42:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833885465] [2023-12-02 15:42:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833885465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:42:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920660684] [2023-12-02 15:42:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:48,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:42:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:42:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:48,701 INFO L87 Difference]: Start difference. First operand 166 states and 237 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:42:51,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:54,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:55,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:57,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:04,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:06,939 WARN L539 Checker$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 15:43:08,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:09,022 INFO L93 Difference]: Finished difference Result 334 states and 479 transitions. [2023-12-02 15:43:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:43:09,023 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 114 [2023-12-02 15:43:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:09,024 INFO L225 Difference]: With dead ends: 334 [2023-12-02 15:43:09,024 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 15:43:09,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 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 15:43:09,026 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 186 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:09,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 477 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 264 Invalid, 4 Unknown, 0 Unchecked, 20.2s Time] [2023-12-02 15:43:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 15:43:09,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-12-02 15:43:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 14 states have call predecessors, (15), 12 states have call successors, (15) [2023-12-02 15:43:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 237 transitions. [2023-12-02 15:43:09,038 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 237 transitions. Word has length 114 [2023-12-02 15:43:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:09,039 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 237 transitions. [2023-12-02 15:43:09,039 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, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:43:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 237 transitions. [2023-12-02 15:43:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 15:43:09,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:09,042 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:09,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:09,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:09,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1023544898, now seen corresponding path program 1 times [2023-12-02 15:43:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:43:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279045290] [2023-12-02 15:43:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:09,254 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 15:43:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:43:09,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:09,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:21,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 4294 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:43:21,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-02 15:43:22,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:43:22,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:43:22,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279045290] [2023-12-02 15:43:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279045290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:22,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:22,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:43:22,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389787983] [2023-12-02 15:43:22,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:43:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:43:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:43:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:43:22,421 INFO L87 Difference]: Start difference. First operand 166 states and 237 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:43:24,808 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 15:43:26,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:28,825 WARN L539 Checker$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 15:43:32,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:38,565 WARN L539 Checker$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 15:43:40,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:42,574 WARN L539 Checker$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 15:43:45,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:45,126 INFO L93 Difference]: Finished difference Result 170 states and 240 transitions. [2023-12-02 15:43:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:43:45,145 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2023-12-02 15:43:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:45,146 INFO L225 Difference]: With dead ends: 170 [2023-12-02 15:43:45,147 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 15:43:45,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 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 15:43:45,148 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 305 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:45,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 511 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 6 Unknown, 0 Unchecked, 22.6s Time] [2023-12-02 15:43:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 15:43:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 15:43:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.4383561643835616) internal successors, (210), 146 states have internal predecessors, (210), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 15:43:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 236 transitions. [2023-12-02 15:43:45,160 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 236 transitions. Word has length 118 [2023-12-02 15:43:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:45,160 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 236 transitions. [2023-12-02 15:43:45,160 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:43:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 236 transitions. [2023-12-02 15:43:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 15:43:45,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:45,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:45,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:43:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:45,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:45,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 275273219, now seen corresponding path program 1 times [2023-12-02 15:43:45,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:43:45,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906120252] [2023-12-02 15:43:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:45,368 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 15:43:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:43:45,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:45,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:43:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:57,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 4288 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:43:57,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-02 15:43:58,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:43:58,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:43:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906120252] [2023-12-02 15:43:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906120252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:43:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200906473] [2023-12-02 15:43:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:43:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:43:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:43:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:43:58,238 INFO L87 Difference]: Start difference. First operand 166 states and 236 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:44:00,575 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 15:44:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:03,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:07,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:14,468 WARN L539 Checker$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 15:44:16,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:19,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:19,545 INFO L93 Difference]: Finished difference Result 176 states and 246 transitions. [2023-12-02 15:44:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:44:19,565 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2023-12-02 15:44:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:19,566 INFO L225 Difference]: With dead ends: 176 [2023-12-02 15:44:19,567 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 15:44:19,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 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 15:44:19,567 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 306 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:19,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 506 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2023-12-02 15:44:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 15:44:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-02 15:44:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 144 states have (on average 1.4305555555555556) internal successors, (206), 144 states have internal predecessors, (206), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 15:44:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-12-02 15:44:19,579 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 112 [2023-12-02 15:44:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:19,579 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-12-02 15:44:19,579 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:44:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-12-02 15:44:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 15:44:19,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:19,581 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:19,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:19,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:19,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:44:19,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1752631246, now seen corresponding path program 1 times [2023-12-02 15:44:19,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469148239] [2023-12-02 15:44:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:19,787 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 15:44:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:19,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:19,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:31,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 4289 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:44:31,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 15:44:32,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:32,461 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469148239] [2023-12-02 15:44:32,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469148239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:32,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:44:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390962277] [2023-12-02 15:44:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:44:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:44:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:44:32,471 INFO L87 Difference]: Start difference. First operand 164 states and 232 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:44:34,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:36,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:38,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:40,690 WARN L539 Checker$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 15:44:46,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:47,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:49,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:52,487 WARN L539 Checker$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 15:44:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:52,537 INFO L93 Difference]: Finished difference Result 174 states and 242 transitions. [2023-12-02 15:44:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:44:52,557 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2023-12-02 15:44:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:52,558 INFO L225 Difference]: With dead ends: 174 [2023-12-02 15:44:52,558 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 15:44:52,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 15:44:52,559 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 303 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 499 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 265 Invalid, 4 Unknown, 0 Unchecked, 20.0s Time] [2023-12-02 15:44:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 15:44:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-02 15:44:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 142 states have (on average 1.4225352112676057) internal successors, (202), 142 states have internal predecessors, (202), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 15:44:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 228 transitions. [2023-12-02 15:44:52,570 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 228 transitions. Word has length 113 [2023-12-02 15:44:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:52,571 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 228 transitions. [2023-12-02 15:44:52,571 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:44:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 228 transitions. [2023-12-02 15:44:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:44:52,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:52,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:52,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:52,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:44:52,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2079852563, now seen corresponding path program 1 times [2023-12-02 15:44:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061236656] [2023-12-02 15:44:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:52,778 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 15:44:52,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:52,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:44:52,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:04,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:45:04,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-02 15:45:05,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:05,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061236656] [2023-12-02 15:45:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061236656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:45:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77168376] [2023-12-02 15:45:05,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:45:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:45:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:45:05,477 INFO L87 Difference]: Start difference. First operand 162 states and 228 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:45:07,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:09,800 WARN L539 Checker$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 15:45:11,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:18,920 WARN L539 Checker$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 15:45:20,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:22,937 WARN L539 Checker$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 15:45:25,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:25,746 INFO L93 Difference]: Finished difference Result 172 states and 238 transitions. [2023-12-02 15:45:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:45:25,766 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2023-12-02 15:45:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:25,768 INFO L225 Difference]: With dead ends: 172 [2023-12-02 15:45:25,768 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 15:45:25,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 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 15:45:25,769 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 176 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:25,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 492 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 5 Unknown, 0 Unchecked, 20.2s Time] [2023-12-02 15:45:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 15:45:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 15:45:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 15:45:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2023-12-02 15:45:25,780 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 115 [2023-12-02 15:45:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:25,780 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2023-12-02 15:45:25,780 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:45:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2023-12-02 15:45:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 15:45:25,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:25,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:25,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:25,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 303939539, now seen corresponding path program 1 times [2023-12-02 15:45:25,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:25,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848356990] [2023-12-02 15:45:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:25,988 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 15:45:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:25,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:25,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:37,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 4292 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:45:37,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 15:45:38,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:38,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848356990] [2023-12-02 15:45:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848356990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:38,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:45:38,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805626292] [2023-12-02 15:45:38,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:38,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:45:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:45:38,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:45:38,800 INFO L87 Difference]: Start difference. First operand 160 states and 224 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:45:41,257 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 15:45:44,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:50,441 WARN L539 Checker$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 15:45:52,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:54,452 WARN L539 Checker$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 15:45:57,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:57,773 INFO L93 Difference]: Finished difference Result 170 states and 234 transitions. [2023-12-02 15:45:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:45:57,794 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2023-12-02 15:45:57,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:57,796 INFO L225 Difference]: With dead ends: 170 [2023-12-02 15:45:57,796 INFO L226 Difference]: Without dead ends: 158 [2023-12-02 15:45:57,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:45:57,797 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 294 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:57,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 485 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 5 Unknown, 0 Unchecked, 18.9s Time] [2023-12-02 15:45:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-02 15:45:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-02 15:45:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 138 states have (on average 1.4057971014492754) internal successors, (194), 138 states have internal predecessors, (194), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-02 15:45:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2023-12-02 15:45:57,813 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 116 [2023-12-02 15:45:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:57,813 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2023-12-02 15:45:57,814 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, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:45:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2023-12-02 15:45:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 15:45:57,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:57,816 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:57,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:58,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:45:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1063853947, now seen corresponding path program 1 times [2023-12-02 15:45:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170783353] [2023-12-02 15:45:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:58,022 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 15:45:58,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:58,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:45:58,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4117125d-fb1d-4990-8bf9-5d812e9a6bcf/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 15:48:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:39,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 4285 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-02 15:48:39,652 INFO L285 TraceCheckSpWp]: Computing forward predicates...