./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH --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 c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:23,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:23,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:23,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:23,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:23,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:23,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:23,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:23,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:23,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:23,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:23,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:23,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:23,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:23,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:23,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:23,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:23,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:23,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:23,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:23,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:23,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:23,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:23,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:23,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:23,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:23,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:23,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:23,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:23,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:23,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:23,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:23,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:23,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:23,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:23,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:23,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:23,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:23,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:23,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:23,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:23,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:47:23,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:23,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:23,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:23,865 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:23,865 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:23,865 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:23,865 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:47:23,866 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:23,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:23,866 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:47:23,866 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:47:23,867 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:23,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:47:23,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:47:23,868 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:47:23,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:23,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:23,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:47:23,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:23,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:23,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:23,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:23,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:23,870 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:23,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:23,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:23,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:23,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:23,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:23,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:23,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:23,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:23,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:23,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:23,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:47:23,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:47:23,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:23,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:23,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:23,875 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2021-11-03 05:47:24,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:24,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:24,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:24,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:24,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:24,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-03 05:47:24,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/e1ad8fb38/b177dfcb8ba441dd9990fd6e2d7e0d50/FLAG8dd0ae717 [2021-11-03 05:47:25,120 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:25,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-03 05:47:25,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/e1ad8fb38/b177dfcb8ba441dd9990fd6e2d7e0d50/FLAG8dd0ae717 [2021-11-03 05:47:25,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/e1ad8fb38/b177dfcb8ba441dd9990fd6e2d7e0d50 [2021-11-03 05:47:25,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:25,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:25,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:25,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:25,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:25,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:25" (1/1) ... [2021-11-03 05:47:25,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbba6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:25, skipping insertion in model container [2021-11-03 05:47:25,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:25" (1/1) ... [2021-11-03 05:47:25,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:25,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:26,055 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-03 05:47:26,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:26,223 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) [2021-11-03 05:47:26,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75eb4e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:26, skipping insertion in model container [2021-11-03 05:47:26,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:26,225 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:47:26,227 INFO L168 Benchmark]: Toolchain (without parser) took 1022.05 ms. Allocated memory is still 119.5 MB. Free memory was 73.9 MB in the beginning and 78.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:26,228 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:47:26,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1015.52 ms. Allocated memory is still 119.5 MB. Free memory was 73.8 MB in the beginning and 78.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:47:26,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1015.52 ms. Allocated memory is still 119.5 MB. Free memory was 73.8 MB in the beginning and 78.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1953]: 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH --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 c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:47:28,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:47:28,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:47:28,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:47:28,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:47:28,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:47:28,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:47:28,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:47:28,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:47:28,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:47:28,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:47:28,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:47:28,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:47:28,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:47:28,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:47:28,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:47:28,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:47:28,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:47:28,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:47:28,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:47:28,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:47:28,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:47:28,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:47:28,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:47:29,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:47:29,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:47:29,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:47:29,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:47:29,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:47:29,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:47:29,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:47:29,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:47:29,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:47:29,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:47:29,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:47:29,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:47:29,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:47:29,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:47:29,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:47:29,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:47:29,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:47:29,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:47:29,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:47:29,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:47:29,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:47:29,093 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:47:29,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:47:29,093 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:47:29,094 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:47:29,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:47:29,094 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:47:29,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:47:29,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:47:29,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:47:29,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:47:29,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:47:29,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:47:29,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:47:29,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:47:29,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:47:29,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:47:29,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:47:29,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:47:29,099 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:47:29,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:47:29,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:47:29,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:47:29,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:47:29,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:29,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:47:29,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:47:29,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:47:29,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:47:29,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:29,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:47:29,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:47:29,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:47:29,103 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2021-11-03 05:47:29,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:47:29,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:47:29,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:47:29,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:47:29,586 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:47:29,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-03 05:47:29,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/5db27fc02/d11ac5e8be644453b50777e1c7de2a00/FLAGf4955015c [2021-11-03 05:47:30,483 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:47:30,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2021-11-03 05:47:30,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/5db27fc02/d11ac5e8be644453b50777e1c7de2a00/FLAGf4955015c [2021-11-03 05:47:30,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/data/5db27fc02/d11ac5e8be644453b50777e1c7de2a00 [2021-11-03 05:47:30,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:47:30,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:47:30,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:30,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:47:30,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:47:30,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:30" (1/1) ... [2021-11-03 05:47:30,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7db2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:30, skipping insertion in model container [2021-11-03 05:47:30,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:47:30" (1/1) ... [2021-11-03 05:47:30,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:47:30,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:31,379 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-03 05:47:31,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:31,536 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:47:31,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:47:31,658 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-03 05:47:31,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:31,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:47:31,804 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_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2021-11-03 05:47:31,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:47:31,953 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:47:31,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31 WrapperNode [2021-11-03 05:47:31,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:47:31,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:31,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:47:31,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:47:31,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:32,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:39,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:47:39,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:47:39,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:47:39,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:47:39,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:39,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:40,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:40,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:42,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:43,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:44,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:45,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:47:45,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:47:45,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:47:45,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:47:45,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (1/1) ... [2021-11-03 05:47:45,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:47:45,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:47:45,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:47:45,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:47:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-03 05:47:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:47:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:47:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:47:45,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:48:55,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:48:55,740 INFO L299 CfgBuilder]: Removed 35867 assume(true) statements. [2021-11-03 05:48:55,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:48:55 BoogieIcfgContainer [2021-11-03 05:48:55,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:48:55,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:48:55,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:48:55,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:48:55,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:47:30" (1/3) ... [2021-11-03 05:48:55,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30267b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:48:55, skipping insertion in model container [2021-11-03 05:48:55,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:47:31" (2/3) ... [2021-11-03 05:48:55,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30267b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:48:55, skipping insertion in model container [2021-11-03 05:48:55,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:48:55" (3/3) ... [2021-11-03 05:48:55,789 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_productSimulator.cil.c [2021-11-03 05:48:55,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:48:55,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-03 05:48:56,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:48:56,054 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 [2021-11-03 05:48:56,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-03 05:48:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 34804 states, 34771 states have (on average 1.6085531045986599) internal successors, (55931), 34803 states have internal predecessors, (55931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 05:48:56,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:56,847 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:56,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:48:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1117911139, now seen corresponding path program 1 times [2021-11-03 05:48:56,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:56,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900444302] [2021-11-03 05:48:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:56,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:56,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:56,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:56,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:48:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:48:57,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:48:57,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:48:57,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:57,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900444302] [2021-11-03 05:48:57,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900444302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:57,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:48:57,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:48:57,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515279391] [2021-11-03 05:48:57,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:48:57,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:48:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:48:57,964 INFO L87 Difference]: Start difference. First operand has 34804 states, 34771 states have (on average 1.6085531045986599) internal successors, (55931), 34803 states have internal predecessors, (55931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:59,427 INFO L93 Difference]: Finished difference Result 69273 states and 111250 transitions. [2021-11-03 05:48:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:48:59,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 05:48:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:59,617 INFO L225 Difference]: With dead ends: 69273 [2021-11-03 05:48:59,617 INFO L226 Difference]: Without dead ends: 22248 [2021-11-03 05:48:59,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:48:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22248 states. [2021-11-03 05:49:00,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22248 to 22248. [2021-11-03 05:49:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22248 states, 22216 states have (on average 1.610010803024847) internal successors, (35768), 22247 states have internal predecessors, (35768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22248 states to 22248 states and 35768 transitions. [2021-11-03 05:49:00,921 INFO L78 Accepts]: Start accepts. Automaton has 22248 states and 35768 transitions. Word has length 46 [2021-11-03 05:49:00,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:00,922 INFO L470 AbstractCegarLoop]: Abstraction has 22248 states and 35768 transitions. [2021-11-03 05:49:00,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 22248 states and 35768 transitions. [2021-11-03 05:49:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:49:00,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:00,933 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:00,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:49:01,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:01,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1798376184, now seen corresponding path program 1 times [2021-11-03 05:49:01,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:01,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067966315] [2021-11-03 05:49:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:01,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:01,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:01,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:49:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:01,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:49:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:01,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:01,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:01,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067966315] [2021-11-03 05:49:01,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067966315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:01,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:01,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:49:01,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082467496] [2021-11-03 05:49:01,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:49:01,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:49:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:49:01,910 INFO L87 Difference]: Start difference. First operand 22248 states and 35768 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:03,019 INFO L93 Difference]: Finished difference Result 44471 states and 71498 transitions. [2021-11-03 05:49:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:49:03,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 05:49:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:03,109 INFO L225 Difference]: With dead ends: 44471 [2021-11-03 05:49:03,109 INFO L226 Difference]: Without dead ends: 22248 [2021-11-03 05:49:03,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:49:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22248 states. [2021-11-03 05:49:04,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22248 to 22248. [2021-11-03 05:49:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22248 states, 22216 states have (on average 1.609695714800144) internal successors, (35761), 22247 states have internal predecessors, (35761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22248 states to 22248 states and 35761 transitions. [2021-11-03 05:49:04,137 INFO L78 Accepts]: Start accepts. Automaton has 22248 states and 35761 transitions. Word has length 47 [2021-11-03 05:49:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:04,139 INFO L470 AbstractCegarLoop]: Abstraction has 22248 states and 35761 transitions. [2021-11-03 05:49:04,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 22248 states and 35761 transitions. [2021-11-03 05:49:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:49:04,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:04,150 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1] [2021-11-03 05:49:04,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:04,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:04,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1194870582, now seen corresponding path program 1 times [2021-11-03 05:49:04,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:04,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737579927] [2021-11-03 05:49:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:04,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:04,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:04,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:04,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:49:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:04,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:04,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:05,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:05,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:05,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737579927] [2021-11-03 05:49:05,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737579927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:05,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:05,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:49:05,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267359237] [2021-11-03 05:49:05,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:49:05,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:49:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:49:05,192 INFO L87 Difference]: Start difference. First operand 22248 states and 35761 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:11,156 INFO L93 Difference]: Finished difference Result 30738 states and 49757 transitions. [2021-11-03 05:49:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:11,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 05:49:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:11,179 INFO L225 Difference]: With dead ends: 30738 [2021-11-03 05:49:11,179 INFO L226 Difference]: Without dead ends: 8504 [2021-11-03 05:49:11,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:49:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8504 states. [2021-11-03 05:49:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8504 to 8504. [2021-11-03 05:49:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8504 states, 8488 states have (on average 1.6085061262959472) internal successors, (13653), 8503 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8504 states to 8504 states and 13653 transitions. [2021-11-03 05:49:11,781 INFO L78 Accepts]: Start accepts. Automaton has 8504 states and 13653 transitions. Word has length 52 [2021-11-03 05:49:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 8504 states and 13653 transitions. [2021-11-03 05:49:11,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8504 states and 13653 transitions. [2021-11-03 05:49:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 05:49:11,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:11,787 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:11,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:49:12,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:12,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash -691084094, now seen corresponding path program 1 times [2021-11-03 05:49:12,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:12,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241656668] [2021-11-03 05:49:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:12,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:12,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:12,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:12,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:49:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:12,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:12,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:12,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:12,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241656668] [2021-11-03 05:49:12,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241656668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:12,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:12,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:12,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894630719] [2021-11-03 05:49:12,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:12,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:12,782 INFO L87 Difference]: Start difference. First operand 8504 states and 13653 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:15,096 INFO L93 Difference]: Finished difference Result 13442 states and 21669 transitions. [2021-11-03 05:49:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:15,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 05:49:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:15,111 INFO L225 Difference]: With dead ends: 13442 [2021-11-03 05:49:15,111 INFO L226 Difference]: Without dead ends: 4954 [2021-11-03 05:49:15,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2021-11-03 05:49:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4954. [2021-11-03 05:49:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 4938 states have (on average 1.6245443499392467) internal successors, (8022), 4953 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 8022 transitions. [2021-11-03 05:49:15,312 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 8022 transitions. Word has length 61 [2021-11-03 05:49:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:15,314 INFO L470 AbstractCegarLoop]: Abstraction has 4954 states and 8022 transitions. [2021-11-03 05:49:15,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 8022 transitions. [2021-11-03 05:49:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 05:49:15,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:15,318 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:15,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:15,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:15,533 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash 555311811, now seen corresponding path program 1 times [2021-11-03 05:49:15,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:15,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410686471] [2021-11-03 05:49:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:15,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:15,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:15,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:49:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:16,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:16,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:16,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:16,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:16,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410686471] [2021-11-03 05:49:16,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410686471] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:16,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:16,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:16,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943150600] [2021-11-03 05:49:16,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:16,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:16,484 INFO L87 Difference]: Start difference. First operand 4954 states and 8022 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:18,770 INFO L93 Difference]: Finished difference Result 9863 states and 15980 transitions. [2021-11-03 05:49:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-03 05:49:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:18,783 INFO L225 Difference]: With dead ends: 9863 [2021-11-03 05:49:18,783 INFO L226 Difference]: Without dead ends: 4945 [2021-11-03 05:49:18,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2021-11-03 05:49:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4945. [2021-11-03 05:49:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 4929 states have (on average 1.62162710488943) internal successors, (7993), 4944 states have internal predecessors, (7993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7993 transitions. [2021-11-03 05:49:19,195 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7993 transitions. Word has length 62 [2021-11-03 05:49:19,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:19,195 INFO L470 AbstractCegarLoop]: Abstraction has 4945 states and 7993 transitions. [2021-11-03 05:49:19,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7993 transitions. [2021-11-03 05:49:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 05:49:19,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:19,198 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:19,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:19,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:19,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash -271658080, now seen corresponding path program 1 times [2021-11-03 05:49:19,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:19,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566757983] [2021-11-03 05:49:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:19,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:19,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:19,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:49:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:19,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:49:19,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:20,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:20,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:20,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566757983] [2021-11-03 05:49:20,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566757983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:20,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:20,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:49:20,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474368752] [2021-11-03 05:49:20,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:49:20,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:49:20,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:49:20,412 INFO L87 Difference]: Start difference. First operand 4945 states and 7993 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:21,562 INFO L93 Difference]: Finished difference Result 19651 states and 31801 transitions. [2021-11-03 05:49:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:49:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-03 05:49:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:21,604 INFO L225 Difference]: With dead ends: 19651 [2021-11-03 05:49:21,604 INFO L226 Difference]: Without dead ends: 14746 [2021-11-03 05:49:21,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:49:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2021-11-03 05:49:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 4944. [2021-11-03 05:49:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4928 states have (on average 1.6211444805194806) internal successors, (7989), 4943 states have internal predecessors, (7989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7989 transitions. [2021-11-03 05:49:21,970 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7989 transitions. Word has length 68 [2021-11-03 05:49:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:21,971 INFO L470 AbstractCegarLoop]: Abstraction has 4944 states and 7989 transitions. [2021-11-03 05:49:21,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7989 transitions. [2021-11-03 05:49:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 05:49:21,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:21,974 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:22,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:22,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:22,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2068911271, now seen corresponding path program 1 times [2021-11-03 05:49:22,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:22,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898480713] [2021-11-03 05:49:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:22,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:22,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:22,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:22,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:49:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:22,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:49:22,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:22,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:23,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:23,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898480713] [2021-11-03 05:49:23,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898480713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:23,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:23,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:49:23,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339073611] [2021-11-03 05:49:23,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:49:23,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:23,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:49:23,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:49:23,079 INFO L87 Difference]: Start difference. First operand 4944 states and 7989 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:24,209 INFO L93 Difference]: Finished difference Result 19618 states and 31732 transitions. [2021-11-03 05:49:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:49:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 05:49:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:24,253 INFO L225 Difference]: With dead ends: 19618 [2021-11-03 05:49:24,253 INFO L226 Difference]: Without dead ends: 14717 [2021-11-03 05:49:24,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:49:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14717 states. [2021-11-03 05:49:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14717 to 4943. [2021-11-03 05:49:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.6206616602394968) internal successors, (7985), 4942 states have internal predecessors, (7985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7985 transitions. [2021-11-03 05:49:24,718 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7985 transitions. Word has length 69 [2021-11-03 05:49:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:24,718 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7985 transitions. [2021-11-03 05:49:24,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7985 transitions. [2021-11-03 05:49:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:49:24,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:24,720 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:24,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:24,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:24,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:24,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1121998227, now seen corresponding path program 1 times [2021-11-03 05:49:24,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:24,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303368782] [2021-11-03 05:49:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:24,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:24,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:24,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:24,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:49:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:25,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:49:25,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:25,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:25,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:25,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303368782] [2021-11-03 05:49:25,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303368782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:25,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:25,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:49:25,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236190165] [2021-11-03 05:49:25,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:49:25,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:25,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:49:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:49:25,814 INFO L87 Difference]: Start difference. First operand 4943 states and 7985 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:26,182 INFO L93 Difference]: Finished difference Result 9850 states and 15928 transitions. [2021-11-03 05:49:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:49:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 05:49:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:26,195 INFO L225 Difference]: With dead ends: 9850 [2021-11-03 05:49:26,196 INFO L226 Difference]: Without dead ends: 4955 [2021-11-03 05:49:26,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:49:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2021-11-03 05:49:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 4943. [2021-11-03 05:49:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.6200527704485488) internal successors, (7982), 4942 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7982 transitions. [2021-11-03 05:49:26,571 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7982 transitions. Word has length 70 [2021-11-03 05:49:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:26,572 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7982 transitions. [2021-11-03 05:49:26,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7982 transitions. [2021-11-03 05:49:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 05:49:26,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:26,578 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:26,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:26,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:26,792 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1789734120, now seen corresponding path program 1 times [2021-11-03 05:49:26,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:26,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752307654] [2021-11-03 05:49:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:26,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:26,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:26,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:49:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:49:27,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:27,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:27,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:27,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752307654] [2021-11-03 05:49:27,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752307654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:27,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:27,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:49:27,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511402713] [2021-11-03 05:49:27,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:49:27,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:27,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:49:27,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:49:27,672 INFO L87 Difference]: Start difference. First operand 4943 states and 7982 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:28,631 INFO L93 Difference]: Finished difference Result 19604 states and 31706 transitions. [2021-11-03 05:49:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:49:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 05:49:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:28,675 INFO L225 Difference]: With dead ends: 19604 [2021-11-03 05:49:28,676 INFO L226 Difference]: Without dead ends: 14713 [2021-11-03 05:49:28,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:49:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14713 states. [2021-11-03 05:49:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14713 to 4943. [2021-11-03 05:49:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.619443880657601) internal successors, (7979), 4942 states have internal predecessors, (7979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7979 transitions. [2021-11-03 05:49:29,237 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7979 transitions. Word has length 72 [2021-11-03 05:49:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:29,238 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7979 transitions. [2021-11-03 05:49:29,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7979 transitions. [2021-11-03 05:49:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 05:49:29,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:29,243 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:29,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:29,458 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1893509693, now seen corresponding path program 1 times [2021-11-03 05:49:29,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:29,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976736322] [2021-11-03 05:49:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:29,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:29,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:29,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:49:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:30,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:30,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:30,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:30,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976736322] [2021-11-03 05:49:30,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976736322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:30,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:30,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:49:30,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121992138] [2021-11-03 05:49:30,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:49:30,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:49:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:49:30,310 INFO L87 Difference]: Start difference. First operand 4943 states and 7979 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:31,044 INFO L93 Difference]: Finished difference Result 14453 states and 23321 transitions. [2021-11-03 05:49:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:49:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 05:49:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:31,067 INFO L225 Difference]: With dead ends: 14453 [2021-11-03 05:49:31,067 INFO L226 Difference]: Without dead ends: 9834 [2021-11-03 05:49:31,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:49:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2021-11-03 05:49:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 5215. [2021-11-03 05:49:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5199 states have (on average 1.6297364877861127) internal successors, (8473), 5214 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8473 transitions. [2021-11-03 05:49:31,687 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8473 transitions. Word has length 74 [2021-11-03 05:49:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:31,689 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 8473 transitions. [2021-11-03 05:49:31,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8473 transitions. [2021-11-03 05:49:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:49:31,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:31,693 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:31,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:31,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:31,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash -646569136, now seen corresponding path program 1 times [2021-11-03 05:49:31,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:31,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519039803] [2021-11-03 05:49:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:31,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:31,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:31,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:49:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:32,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:32,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:32,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:32,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:32,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519039803] [2021-11-03 05:49:32,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519039803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:32,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:32,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:32,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691661388] [2021-11-03 05:49:32,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:32,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:32,864 INFO L87 Difference]: Start difference. First operand 5215 states and 8473 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:33,576 INFO L93 Difference]: Finished difference Result 15157 states and 24602 transitions. [2021-11-03 05:49:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 05:49:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:33,591 INFO L225 Difference]: With dead ends: 15157 [2021-11-03 05:49:33,591 INFO L226 Difference]: Without dead ends: 10053 [2021-11-03 05:49:33,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10053 states. [2021-11-03 05:49:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 5434. [2021-11-03 05:49:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5418 states have (on average 1.6369509043927648) internal successors, (8869), 5433 states have internal predecessors, (8869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 8869 transitions. [2021-11-03 05:49:34,091 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 8869 transitions. Word has length 86 [2021-11-03 05:49:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:34,092 INFO L470 AbstractCegarLoop]: Abstraction has 5434 states and 8869 transitions. [2021-11-03 05:49:34,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 8869 transitions. [2021-11-03 05:49:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 05:49:34,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:34,095 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:34,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:34,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:34,312 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1567762573, now seen corresponding path program 1 times [2021-11-03 05:49:34,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:34,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137682035] [2021-11-03 05:49:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:34,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:34,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:34,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:34,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:49:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:34,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:34,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:35,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:35,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137682035] [2021-11-03 05:49:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137682035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:35,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:35,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079627438] [2021-11-03 05:49:35,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:35,263 INFO L87 Difference]: Start difference. First operand 5434 states and 8869 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:36,035 INFO L93 Difference]: Finished difference Result 15844 states and 25850 transitions. [2021-11-03 05:49:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:36,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 05:49:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:36,052 INFO L225 Difference]: With dead ends: 15844 [2021-11-03 05:49:36,052 INFO L226 Difference]: Without dead ends: 10530 [2021-11-03 05:49:36,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2021-11-03 05:49:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 5911. [2021-11-03 05:49:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 5895 states have (on average 1.6512298558100085) internal successors, (9734), 5910 states have internal predecessors, (9734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 9734 transitions. [2021-11-03 05:49:36,654 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 9734 transitions. Word has length 87 [2021-11-03 05:49:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 5911 states and 9734 transitions. [2021-11-03 05:49:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 9734 transitions. [2021-11-03 05:49:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 05:49:36,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:36,658 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:36,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:36,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:36,872 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash -760549308, now seen corresponding path program 1 times [2021-11-03 05:49:36,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:36,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834701126] [2021-11-03 05:49:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:36,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:36,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:36,875 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:36,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:49:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:37,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:37,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:37,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:37,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:37,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834701126] [2021-11-03 05:49:37,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834701126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:37,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:37,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:37,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727453522] [2021-11-03 05:49:37,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:37,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:37,961 INFO L87 Difference]: Start difference. First operand 5911 states and 9734 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:38,842 INFO L93 Difference]: Finished difference Result 17252 states and 28413 transitions. [2021-11-03 05:49:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:49:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 05:49:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:38,856 INFO L225 Difference]: With dead ends: 17252 [2021-11-03 05:49:38,856 INFO L226 Difference]: Without dead ends: 11470 [2021-11-03 05:49:38,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11470 states. [2021-11-03 05:49:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11470 to 6851. [2021-11-03 05:49:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6851 states, 6835 states have (on average 1.6741770299926848) internal successors, (11443), 6850 states have internal predecessors, (11443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 11443 transitions. [2021-11-03 05:49:39,552 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 11443 transitions. Word has length 88 [2021-11-03 05:49:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:49:39,552 INFO L470 AbstractCegarLoop]: Abstraction has 6851 states and 11443 transitions. [2021-11-03 05:49:39,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 11443 transitions. [2021-11-03 05:49:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 05:49:39,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:49:39,568 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:49:39,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:49:39,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:49:39,775 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-03 05:49:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:49:39,775 INFO L85 PathProgramCache]: Analyzing trace with hash 423581078, now seen corresponding path program 1 times [2021-11-03 05:49:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:49:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952571584] [2021-11-03 05:49:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:39,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:49:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:49:39,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:49:39,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec371613-3d46-4b8a-95ad-2f1d3e17ed86/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:49:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:40,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:40,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:40,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:49:40,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:40,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952571584] [2021-11-03 05:49:40,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952571584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:40,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:49:40,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:49:40,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805786420] [2021-11-03 05:49:40,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:49:40,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:49:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:49:40,823 INFO L87 Difference]: Start difference. First operand 6851 states and 11443 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)