./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:53,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:53,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:53,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:53,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:53,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:53,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:53,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:53,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:53,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:53,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:53,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:53,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:53,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:53,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:53,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:53,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:53,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:53,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:53,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:53,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:53,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:53,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:53,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:53,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:53,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:53,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:53,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:53,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:53,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:53,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:53,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:53,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:53,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:53,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:53,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:53,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:53,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:53,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:53,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:53,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:53,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:21:53,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:53,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:53,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:53,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:53,908 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:53,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:53,909 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:53,909 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:21:53,909 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:53,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:53,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:21:53,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:21:53,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:53,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:21:53,910 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:21:53,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:21:53,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:53,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:21:53,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:21:53,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:21:53,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:53,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:53,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:53,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:53,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:53,913 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:21:53,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:53,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:53,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:53,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:53,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:53,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:53,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:53,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:53,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:53,916 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:21:53,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:21:53,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:53,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:53,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:53,917 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-12 23:21:54,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:54,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:54,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:54,254 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:54,255 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:54,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-12 23:21:54,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/d8695ea6a/c89fe36596d84ce7aae58f9ee38c6593/FLAG175f62c19 [2021-11-12 23:21:54,992 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:21:54,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-12 23:21:55,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/d8695ea6a/c89fe36596d84ce7aae58f9ee38c6593/FLAG175f62c19 [2021-11-12 23:21:55,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/d8695ea6a/c89fe36596d84ce7aae58f9ee38c6593 [2021-11-12 23:21:55,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:21:55,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:21:55,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:55,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:21:55,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:21:55,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:55" (1/1) ... [2021-11-12 23:21:55,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c96e247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:55, skipping insertion in model container [2021-11-12 23:21:55,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:55" (1/1) ... [2021-11-12 23:21:55,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:21:55,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:21:55,772 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-12 23:21:55,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:21:55,915 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:21:55,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cca728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:55, skipping insertion in model container [2021-11-12 23:21:55,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:55,916 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:21:55,919 INFO L158 Benchmark]: Toolchain (without parser) took 680.60ms. Allocated memory is still 96.5MB. Free memory was 57.6MB in the beginning and 64.2MB in the end (delta: -6.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:21:55,921 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 66.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:21:55,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.31ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 64.2MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:21:55,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 66.0MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.31ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 64.2MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:58,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:58,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:58,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:58,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:58,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:58,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:58,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:58,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:58,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:58,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:58,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:58,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:58,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:58,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:58,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:58,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:58,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:58,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:58,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:58,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:58,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:58,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:58,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:58,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:58,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:58,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:58,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:58,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:58,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:58,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:58,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:58,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:58,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:58,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:58,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:58,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:58,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:58,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:58,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:58,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:58,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:21:58,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:58,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:58,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:58,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:58,288 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:58,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:58,288 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:58,288 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:58,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:58,289 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:58,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:58,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:21:58,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:21:58,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:21:58,292 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:21:58,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:21:58,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:58,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:58,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:58,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:58,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:21:58,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:58,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:58,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:58,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:58,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:58,295 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:21:58,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:21:58,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:58,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:58,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:58,296 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-12 23:21:58,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:58,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:58,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:58,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:58,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:58,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-12 23:21:58,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/faeeb7667/cfa4c4a69d6c41eca51288841deecfaa/FLAGf9f222d30 [2021-11-12 23:21:59,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:21:59,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-12 23:21:59,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/faeeb7667/cfa4c4a69d6c41eca51288841deecfaa/FLAGf9f222d30 [2021-11-12 23:21:59,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/data/faeeb7667/cfa4c4a69d6c41eca51288841deecfaa [2021-11-12 23:21:59,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:21:59,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:21:59,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:21:59,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:21:59,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:21:59,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:59" (1/1) ... [2021-11-12 23:21:59,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dbc416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:21:59, skipping insertion in model container [2021-11-12 23:21:59,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:21:59" (1/1) ... [2021-11-12 23:21:59,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:21:59,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:00,173 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-12 23:22:00,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:00,264 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:22:00,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:00,308 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-12 23:22:00,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:00,369 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:22:00,428 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_b076b229-ab9e-45c1-b087-7dc7d3f5490a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-12 23:22:00,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:00,539 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:22:00,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00 WrapperNode [2021-11-12 23:22:00,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:00,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:00,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:22:00,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:22:00,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:00,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:22:00,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:22:00,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:22:00,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:22:00,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:22:00,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:22:00,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:22:00,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:00,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:22:00,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:22:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:22:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:22:00,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:22:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:22:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:22:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:22:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:22:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:22:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:22:06,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:22:06,064 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-12 23:22:06,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:06 BoogieIcfgContainer [2021-11-12 23:22:06,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:22:06,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:22:06,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:22:06,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:22:06,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:21:59" (1/3) ... [2021-11-12 23:22:06,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503450eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:06, skipping insertion in model container [2021-11-12 23:22:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (2/3) ... [2021-11-12 23:22:06,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503450eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:06, skipping insertion in model container [2021-11-12 23:22:06,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:06" (3/3) ... [2021-11-12 23:22:06,074 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-12 23:22:06,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:22:06,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:22:06,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:22:06,143 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, mAutomataTypeConcurrency=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 [2021-11-12 23:22:06,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:22:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:22:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:22:06,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:06,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:06,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash -388532060, now seen corresponding path program 1 times [2021-11-12 23:22:06,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:06,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45165270] [2021-11-12 23:22:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:06,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:06,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:06,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:06,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:22:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:06,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:22:06,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:22:06,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:22:06,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:06,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45165270] [2021-11-12 23:22:06,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45165270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:06,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:06,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:22:06,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648499464] [2021-11-12 23:22:06,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:06,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:06,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:06,486 INFO L87 Difference]: Start difference. First operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:06,725 INFO L93 Difference]: Finished difference Result 342 states and 582 transitions. [2021-11-12 23:22:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:06,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:22:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:06,739 INFO L225 Difference]: With dead ends: 342 [2021-11-12 23:22:06,740 INFO L226 Difference]: Without dead ends: 212 [2021-11-12 23:22:06,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:22:06,747 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 214 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:06,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 404 Invalid, 14 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 177.17ms Time] [2021-11-12 23:22:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-12 23:22:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-12 23:22:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 203 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:22:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 286 transitions. [2021-11-12 23:22:06,805 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 286 transitions. Word has length 10 [2021-11-12 23:22:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:06,806 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 286 transitions. [2021-11-12 23:22:06,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 286 transitions. [2021-11-12 23:22:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 23:22:06,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:06,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:06,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:22:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:07,024 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -557342268, now seen corresponding path program 1 times [2021-11-12 23:22:07,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:07,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314814996] [2021-11-12 23:22:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:07,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:07,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:07,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:22:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:07,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:22:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:22:07,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:22:08,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:08,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314814996] [2021-11-12 23:22:08,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314814996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:08,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:08,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:22:08,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564941351] [2021-11-12 23:22:08,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:08,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:22:08,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:22:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:22:08,044 INFO L87 Difference]: Start difference. First operand 212 states and 286 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:08,204 INFO L93 Difference]: Finished difference Result 424 states and 578 transitions. [2021-11-12 23:22:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-12 23:22:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:08,208 INFO L225 Difference]: With dead ends: 424 [2021-11-12 23:22:08,209 INFO L226 Difference]: Without dead ends: 220 [2021-11-12 23:22:08,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:22:08,214 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 235 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:08,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 313 Invalid, 88 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [50 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 122.91ms Time] [2021-11-12 23:22:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-12 23:22:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-11-12 23:22:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 209 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:22:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 276 transitions. [2021-11-12 23:22:08,265 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 276 transitions. Word has length 112 [2021-11-12 23:22:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:08,265 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 276 transitions. [2021-11-12 23:22:08,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 276 transitions. [2021-11-12 23:22:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-12 23:22:08,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:08,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:08,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:08,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:08,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash -528462268, now seen corresponding path program 1 times [2021-11-12 23:22:08,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:08,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979256211] [2021-11-12 23:22:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:08,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:08,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:08,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:22:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:22:08,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:22:09,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:22:09,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:09,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979256211] [2021-11-12 23:22:09,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979256211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:09,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:09,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:22:09,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159027438] [2021-11-12 23:22:09,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:09,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:22:09,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:22:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:22:09,934 INFO L87 Difference]: Start difference. First operand 218 states and 276 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:10,341 INFO L93 Difference]: Finished difference Result 381 states and 490 transitions. [2021-11-12 23:22:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:22:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-12 23:22:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:10,345 INFO L225 Difference]: With dead ends: 381 [2021-11-12 23:22:10,345 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 23:22:10,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:22:10,347 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 393.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:10,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 302 Invalid, 9 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 393.03ms Time] [2021-11-12 23:22:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 23:22:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-12 23:22:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 207 states have internal predecessors, (241), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:22:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 273 transitions. [2021-11-12 23:22:10,365 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 273 transitions. Word has length 112 [2021-11-12 23:22:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:10,366 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 273 transitions. [2021-11-12 23:22:10,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:22:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 273 transitions. [2021-11-12 23:22:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 23:22:10,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:10,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:10,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:22:10,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:10,587 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1997933147, now seen corresponding path program 1 times [2021-11-12 23:22:10,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:10,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168537826] [2021-11-12 23:22:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:10,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:10,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:10,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:10,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:22:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:10,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:22:10,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 23:22:11,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:22:11,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:11,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168537826] [2021-11-12 23:22:11,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168537826] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:22:11,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:22:11,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 23:22:11,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586983933] [2021-11-12 23:22:11,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:11,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:22:11,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:22:11,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:22:11,604 INFO L87 Difference]: Start difference. First operand 216 states and 273 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:22:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:11,667 INFO L93 Difference]: Finished difference Result 388 states and 503 transitions. [2021-11-12 23:22:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:22:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 127 [2021-11-12 23:22:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:11,670 INFO L225 Difference]: With dead ends: 388 [2021-11-12 23:22:11,670 INFO L226 Difference]: Without dead ends: 219 [2021-11-12 23:22:11,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:22:11,672 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:11,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 39.88ms Time] [2021-11-12 23:22:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-12 23:22:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-12 23:22:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 199 states have (on average 1.2261306532663316) internal successors, (244), 210 states have internal predecessors, (244), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-12 23:22:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2021-11-12 23:22:11,688 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 127 [2021-11-12 23:22:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:11,689 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2021-11-12 23:22:11,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:22:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2021-11-12 23:22:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-12 23:22:11,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:11,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:11,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:11,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:11,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1311171193, now seen corresponding path program 1 times [2021-11-12 23:22:11,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:11,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654802531] [2021-11-12 23:22:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:11,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:11,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:11,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:22:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:12,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:22:12,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:22:12,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:22:13,041 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:13,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654802531] [2021-11-12 23:22:13,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654802531] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:13,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1691537004] [2021-11-12 23:22:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:13,045 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:22:13,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:22:13,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:22:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:13,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:22:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:22:13,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:22:14,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1691537004] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:14,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536193084] [2021-11-12 23:22:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:14,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:14,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:14,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:22:14,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:22:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:14,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:22:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:22:15,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:22:15,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536193084] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:15,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:22:15,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-12 23:22:15,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819839423] [2021-11-12 23:22:15,707 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:22:15,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:22:15,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:22:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:22:15,709 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 23:22:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:17,878 INFO L93 Difference]: Finished difference Result 762 states and 987 transitions. [2021-11-12 23:22:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:22:17,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2021-11-12 23:22:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:17,884 INFO L225 Difference]: With dead ends: 762 [2021-11-12 23:22:17,884 INFO L226 Difference]: Without dead ends: 590 [2021-11-12 23:22:17,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:22:17,886 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 900 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1740.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1911.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:17,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2701 Invalid, 362 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [78 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 1911.95ms Time] [2021-11-12 23:22:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-12 23:22:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2021-11-12 23:22:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 555 states have (on average 1.2072072072072073) internal successors, (670), 566 states have internal predecessors, (670), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-12 23:22:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 732 transitions. [2021-11-12 23:22:17,915 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 732 transitions. Word has length 129 [2021-11-12 23:22:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:17,916 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 732 transitions. [2021-11-12 23:22:17,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-12 23:22:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 732 transitions. [2021-11-12 23:22:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-12 23:22:17,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:17,924 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:17,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:18,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:18,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-12 23:22:18,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:18,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1182299, now seen corresponding path program 2 times [2021-11-12 23:22:18,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:18,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151333241] [2021-11-12 23:22:18,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:22:18,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:18,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:18,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:22:19,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:22:19,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:22:19,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:19,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-12 23:22:20,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-12 23:22:21,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151333241] [2021-11-12 23:22:21,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151333241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [268328632] [2021-11-12 23:22:21,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:22:21,038 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:22:21,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:22:21,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:22:22,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:22:22,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:22:22,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:22,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 199 proven. 10 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-11-12 23:22:22,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 181 proven. 27 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-12 23:22:23,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [268328632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:23,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876283515] [2021-11-12 23:22:23,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:22:23,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:23,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:22:23,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:22:24,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:22:24,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:22:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:22:24,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-12 23:22:24,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-11-12 23:22:25,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876283515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:22:25,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:22:25,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2021-11-12 23:22:25,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986805226] [2021-11-12 23:22:25,702 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:22:25,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 23:22:25,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 23:22:25,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:22:25,706 INFO L87 Difference]: Start difference. First operand 588 states and 732 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:22:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:27,079 INFO L93 Difference]: Finished difference Result 1155 states and 1509 transitions. [2021-11-12 23:22:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-12 23:22:27,081 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 337 [2021-11-12 23:22:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:27,088 INFO L225 Difference]: With dead ends: 1155 [2021-11-12 23:22:27,088 INFO L226 Difference]: Without dead ends: 608 [2021-11-12 23:22:27,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1998 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 23:22:27,100 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 147 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 444.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 518.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:27,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1400 Invalid, 329 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [91 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 518.32ms Time] [2021-11-12 23:22:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-12 23:22:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 600. [2021-11-12 23:22:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 567 states have (on average 1.2098765432098766) internal successors, (686), 578 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-12 23:22:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 748 transitions. [2021-11-12 23:22:27,133 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 748 transitions. Word has length 337 [2021-11-12 23:22:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:27,134 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 748 transitions. [2021-11-12 23:22:27,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:22:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 748 transitions. [2021-11-12 23:22:27,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-12 23:22:27,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:27,144 INFO L514 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:27,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:27,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-12 23:22:27,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:27,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:27,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1718210971, now seen corresponding path program 3 times [2021-11-12 23:22:27,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:27,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136608439] [2021-11-12 23:22:27,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:22:27,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:27,761 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:27,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b076b229-ab9e-45c1-b087-7dc7d3f5490a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process