./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --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 0bc70f5a42db8733d2066db6be11885c85af9192 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --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 0bc70f5a42db8733d2066db6be11885c85af9192 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:44,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:44,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:44,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:44,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:44,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:44,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:44,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:44,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:44,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:44,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:44,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:44,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:44,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:44,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:44,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:44,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:44,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:44,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:44,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:44,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:44,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:44,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:44,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:44,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:44,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:44,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:44,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:44,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:44,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:44,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:44,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:44,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:44,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:44,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:44,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:44,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:44,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:44,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:44,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:44,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:44,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:56:45,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:45,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:45,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:45,010 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:45,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:45,011 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:45,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:56:45,011 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:45,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:45,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:56:45,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:56:45,019 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:45,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:56:45,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:56:45,020 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:56:45,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:45,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:45,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:56:45,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:45,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:45,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:45,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:45,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:45,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:45,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:45,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:45,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:45,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:45,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:45,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:45,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:45,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:45,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:45,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:45,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:56:45,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:56:45,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:45,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:45,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:45,027 INFO L138 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc70f5a42db8733d2066db6be11885c85af9192 [2021-10-16 02:56:45,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:45,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:45,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:45,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:45,395 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:45,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2021-10-16 02:56:45,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/94f751698/40d76a3744d14715a5a88ec86ecb46b9/FLAG6e096b1ce [2021-10-16 02:56:45,933 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:45,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2021-10-16 02:56:45,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/94f751698/40d76a3744d14715a5a88ec86ecb46b9/FLAG6e096b1ce [2021-10-16 02:56:46,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/94f751698/40d76a3744d14715a5a88ec86ecb46b9 [2021-10-16 02:56:46,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:46,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:46,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:46,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:46,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:46,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef1dc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46, skipping insertion in model container [2021-10-16 02:56:46,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:46,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:46,555 WARN L228 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2021-10-16 02:56:46,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:46,587 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:46,597 WARN L228 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2021-10-16 02:56:46,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:46,618 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:46,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46 WrapperNode [2021-10-16 02:56:46,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:46,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:46,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:46,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:46,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:46,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:46,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:46,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:46,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:46,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:46,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:46,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:46,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (1/1) ... [2021-10-16 02:56:46,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:46,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:46,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:46,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:56:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:46,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:47,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:47,225 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 02:56:47,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:47 BoogieIcfgContainer [2021-10-16 02:56:47,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:47,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:47,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:47,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:47,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:46" (1/3) ... [2021-10-16 02:56:47,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3191f548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:47, skipping insertion in model container [2021-10-16 02:56:47,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:46" (2/3) ... [2021-10-16 02:56:47,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3191f548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:47, skipping insertion in model container [2021-10-16 02:56:47,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:47" (3/3) ... [2021-10-16 02:56:47,246 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound2.c [2021-10-16 02:56:47,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:47,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-16 02:56:47,311 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:47,320 INFO L339 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:47,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-16 02:56:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.72) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:56:47,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:47,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:56:47,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:47,351 INFO L82 PathProgramCache]: Analyzing trace with hash 5632582, now seen corresponding path program 1 times [2021-10-16 02:56:47,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:47,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112057688] [2021-10-16 02:56:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:47,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:47,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:47,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112057688] [2021-10-16 02:56:47,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112057688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:47,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:47,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:47,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59601166] [2021-10-16 02:56:47,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:56:47,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:56:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:56:47,690 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.72) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:47,816 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2021-10-16 02:56:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:56:47,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:56:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:47,826 INFO L225 Difference]: With dead ends: 83 [2021-10-16 02:56:47,834 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:56:47,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:56:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 29. [2021-10-16 02:56:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-16 02:56:47,877 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 4 [2021-10-16 02:56:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:47,877 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-16 02:56:47,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-16 02:56:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:56:47,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:47,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:56:47,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:56:47,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1118100201, now seen corresponding path program 1 times [2021-10-16 02:56:47,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:47,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233622407] [2021-10-16 02:56:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:47,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:48,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:48,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233622407] [2021-10-16 02:56:48,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233622407] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:48,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:48,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:48,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833798187] [2021-10-16 02:56:48,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:56:48,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:56:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:56:48,126 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:50,358 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-10-16 02:56:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:56:50,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:56:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:50,360 INFO L225 Difference]: With dead ends: 47 [2021-10-16 02:56:50,360 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 02:56:50,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 02:56:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2021-10-16 02:56:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 02:56:50,369 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 6 [2021-10-16 02:56:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:50,369 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 02:56:50,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 02:56:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:56:50,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:50,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:50,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:56:50,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:50,372 INFO L82 PathProgramCache]: Analyzing trace with hash 752625708, now seen corresponding path program 1 times [2021-10-16 02:56:50,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:50,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066995337] [2021-10-16 02:56:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:50,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:50,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:50,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823046351] [2021-10-16 02:56:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:50,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:50,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:50,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:56:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:50,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:56:50,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:50,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:50,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:50,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066995337] [2021-10-16 02:56:50,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:50,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823046351] [2021-10-16 02:56:50,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823046351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:50,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:50,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:56:50,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055594610] [2021-10-16 02:56:50,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:56:50,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:50,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:56:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:50,682 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:55,249 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-10-16 02:56:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:56:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:56:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:55,253 INFO L225 Difference]: With dead ends: 89 [2021-10-16 02:56:55,253 INFO L226 Difference]: Without dead ends: 68 [2021-10-16 02:56:55,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:56:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-16 02:56:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2021-10-16 02:56:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-10-16 02:56:55,300 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 8 [2021-10-16 02:56:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:55,301 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-10-16 02:56:55,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-10-16 02:56:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:56:55,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:55,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:55,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:55,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-16 02:56:55,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:55,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1748117379, now seen corresponding path program 1 times [2021-10-16 02:56:55,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:55,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395289864] [2021-10-16 02:56:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:55,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:55,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:55,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135744906] [2021-10-16 02:56:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:55,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:55,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:55,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:56:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:55,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:56:55,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:55,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:57,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:57,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395289864] [2021-10-16 02:56:57,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:57,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135744906] [2021-10-16 02:56:57,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135744906] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:57,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:57,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:56:57,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646127792] [2021-10-16 02:56:57,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:56:57,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:57,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:56:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:56:57,233 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:01,642 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-10-16 02:57:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:57:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:57:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:01,644 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:57:01,645 INFO L226 Difference]: Without dead ends: 60 [2021-10-16 02:57:01,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 452.6ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:57:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-16 02:57:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2021-10-16 02:57:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-10-16 02:57:01,656 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 11 [2021-10-16 02:57:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:01,656 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-10-16 02:57:01,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-10-16 02:57:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:57:01,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:01,658 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-10-16 02:57:01,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:01,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:01,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash -395211316, now seen corresponding path program 1 times [2021-10-16 02:57:01,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:57:01,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115374050] [2021-10-16 02:57:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:01,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:57:01,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:57:01,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119417548] [2021-10-16 02:57:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:01,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:01,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:01,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:01,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:57:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:02,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:57:02,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:02,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:03,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:57:03,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115374050] [2021-10-16 02:57:03,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:57:03,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119417548] [2021-10-16 02:57:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119417548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:03,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [941691502] [2021-10-16 02:57:03,940 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:57:03,940 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:57:03,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:57:03,950 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:57:03,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:57:03,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:03,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:57:03,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:03,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:57:03,990 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:57:03,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:03,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:57:03,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-16 02:57:04,029 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:57:04,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:57:04,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:57:04,032 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:57:04,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:57:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:57:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:57:04,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:57:04,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:57:04,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:57:04,056 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:57:04,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:57:04,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:57:04,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-10-16 02:57:04,115 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:57:04,115 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:308, output treesize:156 [2021-10-16 02:57:04,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:04,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:04,323 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-10-16 02:57:04,326 INFO L168 Benchmark]: Toolchain (without parser) took 18015.19 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 78.9 MB in the beginning and 85.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,326 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory is still 31.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:57:04,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.94 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 87.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,328 INFO L168 Benchmark]: Boogie Preprocessor took 24.92 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 84.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,328 INFO L168 Benchmark]: RCFGBuilder took 546.80 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 68.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,329 INFO L168 Benchmark]: TraceAbstraction took 17093.61 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 68.3 MB in the beginning and 85.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:57:04,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory is still 31.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.94 ms. Allocated memory is still 113.2 MB. Free memory was 78.7 MB in the beginning and 87.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 85.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.92 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 84.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 546.80 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 68.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17093.61 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 68.3 MB in the beginning and 85.9 MB in the end (delta: -17.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:57:04,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:57:06,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:57:06,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:57:06,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:57:06,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:57:06,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:57:06,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:57:06,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:57:06,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:57:06,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:57:06,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:57:06,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:57:06,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:57:06,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:57:06,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:57:06,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:57:06,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:57:06,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:57:06,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:57:06,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:57:06,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:57:06,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:57:06,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:57:06,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:57:06,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:57:06,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:57:06,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:57:06,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:57:06,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:57:06,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:57:06,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:57:06,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:57:06,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:57:06,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:57:06,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:57:06,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:57:06,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:57:06,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:57:06,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:57:06,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:57:06,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:57:06,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:57:06,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:57:06,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:57:06,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:57:06,991 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:57:06,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:57:06,992 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:57:06,992 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:57:06,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:57:06,992 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:57:06,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:57:06,995 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:57:06,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:57:06,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:57:06,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:57:06,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:57:06,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:57:06,997 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:57:06,997 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:57:06,997 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:57:06,997 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:57:06,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:57:06,998 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:57:06,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:57:06,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:57:06,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:57:06,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:57:06,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:06,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:57:06,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:57:07,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:57:07,000 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:57:07,000 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:07,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:57:07,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:57:07,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:57:07,001 INFO L138 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc70f5a42db8733d2066db6be11885c85af9192 [2021-10-16 02:57:07,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:57:07,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:57:07,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:57:07,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:57:07,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:57:07,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2021-10-16 02:57:07,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/23906f624/363ac73b9f114e8d8050786e624f66b2/FLAG169705e28 [2021-10-16 02:57:07,999 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:57:08,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c [2021-10-16 02:57:08,011 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/23906f624/363ac73b9f114e8d8050786e624f66b2/FLAG169705e28 [2021-10-16 02:57:08,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/data/23906f624/363ac73b9f114e8d8050786e624f66b2 [2021-10-16 02:57:08,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:57:08,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:57:08,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:08,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:57:08,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:57:08,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae7fb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08, skipping insertion in model container [2021-10-16 02:57:08,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:57:08,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:57:08,553 WARN L228 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2021-10-16 02:57:08,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:08,606 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:57:08,627 WARN L228 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_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound2.c[537,550] [2021-10-16 02:57:08,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:57:08,664 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:57:08,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08 WrapperNode [2021-10-16 02:57:08,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:57:08,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:08,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:57:08,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:57:08,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:57:08,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:57:08,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:57:08,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:57:08,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:57:08,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:57:08,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:57:08,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:57:08,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (1/1) ... [2021-10-16 02:57:08,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:57:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:08,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:57:08,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:57:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:57:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:57:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:57:08,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:57:09,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:57:09,353 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 02:57:09,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:09 BoogieIcfgContainer [2021-10-16 02:57:09,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:57:09,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:57:09,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:57:09,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:57:09,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:57:08" (1/3) ... [2021-10-16 02:57:09,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fe367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:09, skipping insertion in model container [2021-10-16 02:57:09,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:57:08" (2/3) ... [2021-10-16 02:57:09,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fe367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:57:09, skipping insertion in model container [2021-10-16 02:57:09,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:57:09" (3/3) ... [2021-10-16 02:57:09,365 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound2.c [2021-10-16 02:57:09,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:57:09,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-16 02:57:09,441 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:57:09,449 INFO L339 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:57:09,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-16 02:57:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:57:09,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:09,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:09,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:09,505 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-16 02:57:09,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:09,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737489420] [2021-10-16 02:57:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:09,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:09,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:09,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:57:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:57:09,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:09,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:09,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:09,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737489420] [2021-10-16 02:57:09,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737489420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:09,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:09,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:57:09,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954447915] [2021-10-16 02:57:09,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:57:09,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:57:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:57:09,868 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:09,898 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2021-10-16 02:57:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:57:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:57:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:09,910 INFO L225 Difference]: With dead ends: 83 [2021-10-16 02:57:09,911 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 02:57:09,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:57:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 02:57:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-16 02:57:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-16 02:57:09,961 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-10-16 02:57:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:09,962 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-16 02:57:09,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-16 02:57:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:57:09,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:09,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:09,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:10,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:10,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-16 02:57:10,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:10,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214449436] [2021-10-16 02:57:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:10,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:10,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:10,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:57:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:10,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:10,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:10,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:10,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:10,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214449436] [2021-10-16 02:57:10,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214449436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:10,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:10,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:57:10,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867062773] [2021-10-16 02:57:10,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:57:10,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:57:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:57:10,468 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:10,713 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-10-16 02:57:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:57:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:57:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:10,716 INFO L225 Difference]: With dead ends: 58 [2021-10-16 02:57:10,716 INFO L226 Difference]: Without dead ends: 56 [2021-10-16 02:57:10,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:57:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-16 02:57:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2021-10-16 02:57:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-16 02:57:10,726 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2021-10-16 02:57:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:10,727 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-16 02:57:10,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-16 02:57:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:57:10,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:10,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:10,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:10,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:10,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-16 02:57:10,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:10,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059185227] [2021-10-16 02:57:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:10,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:10,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:10,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:57:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:11,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:11,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:11,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:11,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:11,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059185227] [2021-10-16 02:57:11,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059185227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:11,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:11,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:57:11,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733314046] [2021-10-16 02:57:11,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:57:11,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:11,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:57:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:57:11,166 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:11,371 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-10-16 02:57:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:57:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:57:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:11,373 INFO L225 Difference]: With dead ends: 56 [2021-10-16 02:57:11,373 INFO L226 Difference]: Without dead ends: 54 [2021-10-16 02:57:11,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:57:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-16 02:57:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-10-16 02:57:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-16 02:57:11,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2021-10-16 02:57:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:11,382 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-16 02:57:11,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-16 02:57:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:57:11,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:11,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:11,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:11,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:11,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:11,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:11,595 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2021-10-16 02:57:11,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:11,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518208669] [2021-10-16 02:57:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:11,596 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:11,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:11,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:11,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:57:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:11,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:57:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:12,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:12,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518208669] [2021-10-16 02:57:12,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518208669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:12,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:12,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-10-16 02:57:12,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654325308] [2021-10-16 02:57:12,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:57:12,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:57:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:57:12,389 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:13,828 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2021-10-16 02:57:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:57:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:57:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:13,830 INFO L225 Difference]: With dead ends: 82 [2021-10-16 02:57:13,830 INFO L226 Difference]: Without dead ends: 60 [2021-10-16 02:57:13,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1084.2ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:57:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-16 02:57:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-10-16 02:57:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-10-16 02:57:13,842 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 15 [2021-10-16 02:57:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:13,842 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-10-16 02:57:13,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-10-16 02:57:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:57:13,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:13,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:13,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:14,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2021-10-16 02:57:14,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:14,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235184940] [2021-10-16 02:57:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:14,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:14,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:14,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:57:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:14,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:57:14,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:14,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:15,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:15,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235184940] [2021-10-16 02:57:15,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235184940] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:15,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:15,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-10-16 02:57:15,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23032147] [2021-10-16 02:57:15,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:57:15,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:57:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:57:15,039 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:15,639 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-10-16 02:57:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:57:15,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:57:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:15,641 INFO L225 Difference]: With dead ends: 70 [2021-10-16 02:57:15,641 INFO L226 Difference]: Without dead ends: 59 [2021-10-16 02:57:15,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 422.7ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:57:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-16 02:57:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2021-10-16 02:57:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.183673469387755) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-16 02:57:15,664 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 18 [2021-10-16 02:57:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:15,664 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-16 02:57:15,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-16 02:57:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:57:15,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:15,667 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:15,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:15,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:15,881 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2021-10-16 02:57:15,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:15,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788072445] [2021-10-16 02:57:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:15,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:15,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:15,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:57:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:16,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-16 02:57:16,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:17,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:22,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:22,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788072445] [2021-10-16 02:57:22,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788072445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:22,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1711143484] [2021-10-16 02:57:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:22,481 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:57:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:57:22,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:57:22,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:57:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:22,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:57:22,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:23,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:26,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1711143484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:26,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526854773] [2021-10-16 02:57:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:26,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:57:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:57:26,187 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:57:26,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:57:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:26,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-16 02:57:26,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:27,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:31,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526854773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:57:31,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:57:31,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8, 8, 15, 10] total 28 [2021-10-16 02:57:31,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581647701] [2021-10-16 02:57:31,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-16 02:57:31,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-16 02:57:31,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-10-16 02:57:31,725 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:58:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:58:26,981 INFO L93 Difference]: Finished difference Result 203 states and 227 transitions. [2021-10-16 02:58:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-16 02:58:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 02:58:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:58:26,985 INFO L225 Difference]: With dead ends: 203 [2021-10-16 02:58:26,985 INFO L226 Difference]: Without dead ends: 177 [2021-10-16 02:58:26,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 41501.4ms TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2021-10-16 02:58:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-16 02:58:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 81. [2021-10-16 02:58:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:58:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-10-16 02:58:27,005 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 31 [2021-10-16 02:58:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:58:27,005 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-10-16 02:58:27,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 28 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:58:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-10-16 02:58:27,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-16 02:58:27,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:58:27,007 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:58:27,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:27,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:58:27,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 02:58:27,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:58:27,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:58:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:58:27,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2021-10-16 02:58:27,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:58:27,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645703414] [2021-10-16 02:58:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:27,621 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:58:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:58:27,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:58:27,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:58:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:58:27,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:58:27,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:29,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:58:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:47,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:58:47,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645703414] [2021-10-16 02:58:47,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645703414] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:58:47,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1258545956] [2021-10-16 02:58:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:58:47,593 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:58:47,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:58:47,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:58:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:58:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:58:48,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 02:58:48,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:58:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:58:50,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:44,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1258545956] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:59:44,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644540863] [2021-10-16 02:59:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:44,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:59:44,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:44,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:59:44,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:59:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:44,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-16 02:59:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:54,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:47,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644540863] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:47,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:01:47,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12, 13, 18, 14] total 59 [2021-10-16 03:01:47,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653544271] [2021-10-16 03:01:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-16 03:01:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-16 03:01:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=2784, Unknown=40, NotChecked=0, Total=3422 [2021-10-16 03:01:47,771 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:08,290 WARN L207 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2021-10-16 03:02:24,873 WARN L207 SmtUtils]: Spent 7.91 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-10-16 03:03:11,782 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-10-16 03:03:31,130 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2021-10-16 03:04:13,533 WARN L207 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-10-16 03:05:49,420 WARN L207 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-10-16 03:06:07,300 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2021-10-16 03:06:13,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:13,405 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2021-10-16 03:06:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-16 03:06:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-16 03:06:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:13,412 INFO L225 Difference]: With dead ends: 162 [2021-10-16 03:06:13,412 INFO L226 Difference]: Without dead ends: 123 [2021-10-16 03:06:13,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 386645.0ms TimeCoverageRelationStatistics Valid=1863, Invalid=8603, Unknown=40, NotChecked=0, Total=10506 [2021-10-16 03:06:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-16 03:06:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 96. [2021-10-16 03:06:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-10-16 03:06:13,436 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 36 [2021-10-16 03:06:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:13,436 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-10-16 03:06:13,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.864406779661017) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-10-16 03:06:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 03:06:13,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:13,439 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:06:13,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:13,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:13,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:14,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:14,050 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 03:06:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash 655310912, now seen corresponding path program 1 times [2021-10-16 03:06:14,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:14,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361959430] [2021-10-16 03:06:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:14,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:14,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:14,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:06:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:14,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 03:06:14,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:15,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:19,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:19,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361959430] [2021-10-16 03:06:19,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361959430] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:19,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1871819973] [2021-10-16 03:06:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:19,004 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:19,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:06:19,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:06:19,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-16 03:06:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:19,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-16 03:06:19,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:21,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1871819973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:25,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592261098] [2021-10-16 03:06:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:25,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:06:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:06:25,603 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:06:25,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-16 03:06:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:26,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 03:06:26,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:27,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:31,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592261098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:31,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:06:31,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11, 9, 16, 11] total 35 [2021-10-16 03:06:31,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019293476] [2021-10-16 03:06:31,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-16 03:06:31,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-16 03:06:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-16 03:06:31,458 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 35 states, 35 states have (on average 4.6) internal successors, (161), 35 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:35,906 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2021-10-16 03:06:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-16 03:06:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.6) internal successors, (161), 35 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-16 03:06:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:35,908 INFO L225 Difference]: With dead ends: 126 [2021-10-16 03:06:35,908 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 03:06:35,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 9889.9ms TimeCoverageRelationStatistics Valid=748, Invalid=2114, Unknown=0, NotChecked=0, Total=2862 [2021-10-16 03:06:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 03:06:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-10-16 03:06:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-10-16 03:06:35,933 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 40 [2021-10-16 03:06:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:35,934 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-10-16 03:06:35,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.6) internal successors, (161), 35 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-10-16 03:06:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 03:06:35,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:35,941 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:06:35,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:36,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:36,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:36,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:06:36,565 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 03:06:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:36,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 2 times [2021-10-16 03:06:36,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:36,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384442827] [2021-10-16 03:06:36,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:06:36,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:36,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:36,568 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:36,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:06:37,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:06:37,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:06:37,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 03:06:37,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:06:41,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:05,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:07:05,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384442827] [2021-10-16 03:07:05,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384442827] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:05,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849639686] [2021-10-16 03:07:05,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:07:05,951 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:07:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:07:05,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:07:05,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 03:07:07,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:07:07,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:07:07,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 03:07:07,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:10,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:21,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849639686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:21,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901439440] [2021-10-16 03:07:21,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:07:21,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:07:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:21,095 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:07:21,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-16 03:07:22,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:07:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:07:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-16 03:07:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:32,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:08:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:08:09,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901439440] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:08:09,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:08:09,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16, 12, 16, 15] total 59 [2021-10-16 03:08:09,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011697258] [2021-10-16 03:08:09,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-16 03:08:09,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:08:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-16 03:08:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=2809, Unknown=1, NotChecked=0, Total=3422 [2021-10-16 03:08:09,708 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 59 states, 59 states have (on average 3.457627118644068) internal successors, (204), 59 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:08:20,973 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-10-16 03:08:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 03:08:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.457627118644068) internal successors, (204), 59 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-16 03:08:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:08:20,974 INFO L225 Difference]: With dead ends: 59 [2021-10-16 03:08:20,974 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:08:20,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 197 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 71859.7ms TimeCoverageRelationStatistics Valid=934, Invalid=3757, Unknown=1, NotChecked=0, Total=4692 [2021-10-16 03:08:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:08:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:08:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:08:20,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-10-16 03:08:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:08:20,977 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:08:20,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.457627118644068) internal successors, (204), 59 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:08:20,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:08:20,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:20,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:08:21,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:21,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:08:21,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-10-16 03:08:21,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:08:21,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:08:21,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:21,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:08:37,711 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,711 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-16 03:08:37,711 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-16 03:08:37,711 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-16 03:08:37,712 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse6 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse3 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse2 .cse3 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse4 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse5 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse5)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse5))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (let ((.cse7 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse2 (= (bvadd .cse7 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) (bvneg ULTIMATE.start_main_~d~0)) ULTIMATE.start_main_~A~0) .cse3 (= ULTIMATE.start_main_~A~0 (bvadd .cse7 ULTIMATE.start_main_~r~0)) .cse4 (= ULTIMATE.start_main_~A~0 (bvadd ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0))))) (and .cse0 .cse1 .cse6 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse3 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~p~0 (_ bv1 32)) .cse4))) [2021-10-16 03:08:37,712 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,712 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:08:37,713 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:08:37,713 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-16 03:08:37,713 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-16 03:08:37,713 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-16 03:08:37,713 INFO L860 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-10-16 03:08:37,713 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,714 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-10-16 03:08:37,714 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-10-16 03:08:37,714 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-16 03:08:37,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,715 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,715 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~p~0 (_ bv1 32)) .cse6) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse4 .cse5 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse6 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse7 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse7)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse7))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (let ((.cse8 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 (= (bvadd .cse8 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) (bvneg ULTIMATE.start_main_~d~0)) ULTIMATE.start_main_~A~0) .cse5 (= ULTIMATE.start_main_~A~0 (bvadd .cse8 ULTIMATE.start_main_~r~0)) .cse6)))) [2021-10-16 03:08:37,715 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,715 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~p~0 (_ bv1 32)) .cse6) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse4 .cse5 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse6 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse7 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse7)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse7))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (let ((.cse8 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 (= (bvadd .cse8 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) (bvneg ULTIMATE.start_main_~d~0)) ULTIMATE.start_main_~A~0) .cse5 (= ULTIMATE.start_main_~A~0 (bvadd .cse8 ULTIMATE.start_main_~r~0)) .cse6)))) [2021-10-16 03:08:37,715 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,716 INFO L853 garLoopResultBuilder]: At program point L15-8(line 40) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse6 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~p~0 (_ bv1 32)) .cse6) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse4 .cse5 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse6 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse7 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse7)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse7))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (let ((.cse8 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 (= (bvadd .cse8 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) (bvneg ULTIMATE.start_main_~d~0)) ULTIMATE.start_main_~A~0) .cse5 (= ULTIMATE.start_main_~A~0 (bvadd .cse8 ULTIMATE.start_main_~r~0)) .cse6)))) [2021-10-16 03:08:37,716 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,716 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse16 (bvneg ULTIMATE.start_main_~d~0)) (.cse13 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse17 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse6 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse2 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse15 (= ULTIMATE.start_main_~A~0 (bvadd .cse17 ULTIMATE.start_main_~r~0))) (.cse10 (bvudiv (bvmul ULTIMATE.start_main_~B~0 (_ bv4 32)) (_ bv2 32))) (.cse12 (bvuge ULTIMATE.start_main_~A~0 .cse13)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse14 (= (bvadd .cse17 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse16) ULTIMATE.start_main_~A~0)) (.cse7 (= ULTIMATE.start_main_~p~0 (_ bv1 32))) (.cse8 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse4 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse8 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse9 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse9)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse9))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (and .cse0 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~A~0 (bvneg .cse10))) (exists ((v_ULTIMATE.start_main_~p~0_69 (_ BitVec 32))) (let ((.cse11 (bvudiv v_ULTIMATE.start_main_~p~0_69 (_ bv2 32)))) (and (= ULTIMATE.start_main_~q~0 .cse11) (= ULTIMATE.start_main_~p~0 (bvudiv .cse11 (_ bv2 32))) (= (bvmul v_ULTIMATE.start_main_~p~0_69 ULTIMATE.start_main_~B~0) (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0))))) .cse4 .cse5 .cse6 .cse8 (= (bvmul (bvudiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0) (bvudiv ULTIMATE.start_main_~d~0 (_ bv2 32))) .cse12) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 .cse13) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 .cse14 .cse5 .cse15 .cse8) (and .cse0 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~A~0 .cse16)) .cse2 .cse4 (exists ((v_ULTIMATE.start_main_~p~0_69 (_ BitVec 32))) (and (= ULTIMATE.start_main_~p~0 (bvudiv v_ULTIMATE.start_main_~p~0_69 (_ bv2 32))) (= (bvmul v_ULTIMATE.start_main_~p~0_69 ULTIMATE.start_main_~B~0) (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0)))) .cse5 .cse15 .cse8 (= ULTIMATE.start_main_~d~0 .cse10) .cse12) (and (bvuge ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~B~0) (not .cse12) .cse0 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse4 .cse14 .cse7 .cse8 (= ULTIMATE.start_main_~r~0 (bvadd (bvneg (bvudiv .cse13 (_ bv2 32))) ULTIMATE.start_main_~A~0)))))) [2021-10-16 03:08:37,716 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,716 INFO L853 garLoopResultBuilder]: At program point L15-14(line 50) the Hoare annotation is: (let ((.cse18 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0)) (.cse9 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0))) (.cse17 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)))) (let ((.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse14 (bvudiv (bvmul ULTIMATE.start_main_~B~0 (_ bv4 32)) (_ bv2 32))) (.cse6 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse11 (bvneg ULTIMATE.start_main_~d~0)) (.cse15 (bvuge ULTIMATE.start_main_~A~0 .cse17)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (bvule ULTIMATE.start_main_~B~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse12 (let ((.cse19 (bvmul ULTIMATE.start_main_~d~0 (_ bv2 32)))) (or (= ULTIMATE.start_main_~A~0 (bvadd .cse18 ULTIMATE.start_main_~r~0 (bvmul (bvudiv (bvmul ULTIMATE.start_main_~p~0 (_ bv2 32)) (_ bv2 32)) ULTIMATE.start_main_~B~0) (bvneg (bvudiv .cse19 (_ bv2 32))))) .cse9 (bvuge ULTIMATE.start_main_~r~0 .cse19)))) (.cse13 (= ULTIMATE.start_main_~A~0 (bvadd .cse18 ULTIMATE.start_main_~r~0))) (.cse7 (= ULTIMATE.start_main_~p~0 (_ bv1 32))) (.cse8 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse0 (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse1 (= (_ bv2 32) ULTIMATE.start_main_~p~0) .cse4 (= ULTIMATE.start_main_~d~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse8 (exists ((ULTIMATE.start_main_~B~0 (_ BitVec 32))) (and (let ((.cse10 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0))) (or (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse10)) (and (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse10))) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0))))) (and .cse0 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~A~0 .cse11)) .cse2 .cse4 (exists ((v_ULTIMATE.start_main_~p~0_69 (_ BitVec 32))) (and (= ULTIMATE.start_main_~p~0 (bvudiv v_ULTIMATE.start_main_~p~0_69 (_ bv2 32))) (= (bvmul v_ULTIMATE.start_main_~p~0_69 ULTIMATE.start_main_~B~0) (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0)))) .cse5 .cse12 .cse13 .cse8 (= ULTIMATE.start_main_~d~0 .cse14) .cse15) (and .cse0 (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~A~0 (bvneg .cse14))) (exists ((v_ULTIMATE.start_main_~p~0_69 (_ BitVec 32))) (let ((.cse16 (bvudiv v_ULTIMATE.start_main_~p~0_69 (_ bv2 32)))) (and (= ULTIMATE.start_main_~q~0 .cse16) (= ULTIMATE.start_main_~p~0 (bvudiv .cse16 (_ bv2 32))) (= (bvmul v_ULTIMATE.start_main_~p~0_69 ULTIMATE.start_main_~B~0) (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0))))) .cse4 .cse5 .cse6 .cse8 (= (bvmul (bvudiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0) (bvudiv ULTIMATE.start_main_~d~0 (_ bv2 32))) .cse15) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 .cse17) .cse2 (= (_ bv4 32) ULTIMATE.start_main_~p~0) .cse3 .cse4 (= (bvadd .cse18 ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse11) ULTIMATE.start_main_~A~0) .cse5 .cse13 .cse8) (and (bvuge ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~B~0) (not .cse15) .cse0 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 (bvudiv .cse17 (_ bv2 32))) .cse5 .cse12 .cse13 .cse7 .cse8)))) [2021-10-16 03:08:37,716 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,717 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:08:37,717 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvule ULTIMATE.start_main_~B~0 (_ bv2 32)) (bvuge ULTIMATE.start_main_~B~0 (_ bv1 32)) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~p~0 (_ bv1 32))) [2021-10-16 03:08:37,717 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-16 03:08:37,717 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-16 03:08:37,717 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,717 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:08:37,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-16 03:08:37,723 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:08:37,729 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-10-16 03:08:37,737 INFO L168 Benchmark]: Toolchain (without parser) took 689370.29 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 45.0 MB in the beginning and 31.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:37,738 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:08:37,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.20 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 48.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:37,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.85 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 46.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:37,739 INFO L168 Benchmark]: Boogie Preprocessor took 63.89 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 45.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:08:37,740 INFO L168 Benchmark]: RCFGBuilder took 535.12 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 33.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:37,740 INFO L168 Benchmark]: TraceAbstraction took 688378.62 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.2 MB in the beginning and 31.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:08:37,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.20 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 48.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.85 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 46.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.89 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 45.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 535.12 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 33.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 688378.62 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.2 MB in the beginning and 31.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 688284.7ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 43.1ms, AutomataDifference: 339199.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 16114.2ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 206 SDtfs, 2022 SDslu, 763 SDs, 0 SdLazy, 2453 SolverSat, 1579 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 76795.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1141 GetRequests, 808 SyntacticMatches, 8 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6588 ImplicationChecksByTransitivity, 511478.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=7, InterpolantAutomatonStates: 170, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 138.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 38 NumberOfFragments, 1171 HoareAnnotationTreeSize, 9 FomulaSimplifications, 8707 FormulaSimplificationTreeSizeReduction, 348.7ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 1345 FormulaSimplificationTreeSizeReductionInter, 15756.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 154.5ms SsaConstructionTime, 1363.7ms SatisfiabilityAnalysisTime, 322242.3ms InterpolantComputationTime, 521 NumberOfCodeBlocks, 521 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1008 ConstructedInterpolants, 108 QuantifiedInterpolants, 18744 SizeOfPredicates, 192 NumberOfNonLiveVariables, 1245 ConjunctsInSsa, 326 ConjunctsInUnsatCore, 34 InterpolantComputations, 10 PerfectInterpolantSequences, 12/462 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:08:37,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a30ae2f8-498a-4bf9-bc87-ae5259c70ea5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...