./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8 --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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:51,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:51,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:51,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:51,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:51,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:51,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:51,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:51,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:51,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:51,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:51,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:51,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:51,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:51,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:51,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:51,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:51,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:51,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:51,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:51,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:51,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:51,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:51,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:51,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:51,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:51,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:51,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:51,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:51,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:51,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:51,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:51,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:51,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:51,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:51,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:51,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:51,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:51,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:51,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:51,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:51,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:59:51,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:51,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:51,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:51,237 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:51,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:51,237 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:51,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:59:51,237 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:51,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:51,244 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:59:51,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:59:51,245 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:51,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:59:51,246 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:59:51,246 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:59:51,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:51,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:59:51,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:59:51,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:59:51,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:51,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:51,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:51,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:51,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:51,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:59:51,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:51,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:51,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:51,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:51,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:51,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:51,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:51,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:51,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:51,252 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:59:51,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:59:51,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:51,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:51,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:51,253 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_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2021-11-07 01:59:51,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:51,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:51,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:51,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:51,645 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:51,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-11-07 01:59:51,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/ff7b39a70/b8a73369e6874491a35cfad7b9e3e7f2/FLAG7cd4eb655 [2021-11-07 01:59:52,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:52,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-11-07 01:59:52,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/ff7b39a70/b8a73369e6874491a35cfad7b9e3e7f2/FLAG7cd4eb655 [2021-11-07 01:59:52,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/ff7b39a70/b8a73369e6874491a35cfad7b9e3e7f2 [2021-11-07 01:59:52,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:52,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:52,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:52,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:52,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:52,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:52" (1/1) ... [2021-11-07 01:59:52,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0526c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:52, skipping insertion in model container [2021-11-07 01:59:52,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:52" (1/1) ... [2021-11-07 01:59:52,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:52,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:52,893 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_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-11-07 01:59:52,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:52,914 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) [2021-11-07 01:59:52,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50651371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:52, skipping insertion in model container [2021-11-07 01:59:52,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:52,915 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:59:52,917 INFO L168 Benchmark]: Toolchain (without parser) took 296.17 ms. Allocated memory is still 119.5 MB. Free memory was 76.7 MB in the beginning and 93.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:52,918 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory is still 93.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:52,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.40 ms. Allocated memory is still 119.5 MB. Free memory was 76.5 MB in the beginning and 93.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:52,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory is still 93.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.40 ms. Allocated memory is still 119.5 MB. Free memory was 76.5 MB in the beginning and 93.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8 --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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:55,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:55,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:55,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:55,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:55,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:55,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:55,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:55,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:55,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:55,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:55,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:55,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:55,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:55,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:55,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:55,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:55,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:55,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:55,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:55,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:55,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:55,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:55,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:55,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:55,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:55,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:55,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:55,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:55,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:55,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:55,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:55,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:55,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:55,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:55,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:55,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:55,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:55,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:55,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:55,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:55,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:59:55,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:55,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:55,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:55,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:55,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:55,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:55,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:55,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:55,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:55,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:55,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:59:55,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:59:55,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:55,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:55,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:55,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:55,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:55,414 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:59:55,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:59:55,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:59:55,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:55,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:55,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:55,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:55,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:59:55,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:55,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:55,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:55,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:55,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:55,417 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:59:55,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:55,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:55,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:55,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:55,419 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_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 [2021-11-07 01:59:55,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:55,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:55,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:55,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:55,930 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:55,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-11-07 01:59:56,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/128edce59/2f455c9704a949a6b698fc7e2cc7c1e7/FLAG62b408275 [2021-11-07 01:59:56,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:56,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-11-07 01:59:56,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/128edce59/2f455c9704a949a6b698fc7e2cc7c1e7/FLAG62b408275 [2021-11-07 01:59:56,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/data/128edce59/2f455c9704a949a6b698fc7e2cc7c1e7 [2021-11-07 01:59:56,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:56,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:56,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:56,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:56,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:56,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:56" (1/1) ... [2021-11-07 01:59:56,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2e3c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:56, skipping insertion in model container [2021-11-07 01:59:56,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:56" (1/1) ... [2021-11-07 01:59:56,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:57,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:57,209 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_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-11-07 01:59:57,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:57,234 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:59:57,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:57,298 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_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-11-07 01:59:57,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:57,310 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:57,363 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_4e30a38a-481f-4914-91f6-dcf1074078fc/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3947,3960] [2021-11-07 01:59:57,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:57,385 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:59:57,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57 WrapperNode [2021-11-07 01:59:57,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:57,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:57,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:59:57,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:59:57,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:57,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:59:57,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:59:57,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:59:57,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:57,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:57,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:57,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:57,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (1/1) ... [2021-11-07 01:59:57,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:57,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:57,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:59:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:59:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:59:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:59:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:59:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:59:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:59:57,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:59:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:59:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:59:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:59:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:57,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:59:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:59:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:59:57,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:59:59,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:59,487 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-11-07 01:59:59,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:59 BoogieIcfgContainer [2021-11-07 01:59:59,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:59,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:59,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:59,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:59,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:56" (1/3) ... [2021-11-07 01:59:59,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5e0538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:59, skipping insertion in model container [2021-11-07 01:59:59,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:57" (2/3) ... [2021-11-07 01:59:59,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5e0538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:59, skipping insertion in model container [2021-11-07 01:59:59,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:59" (3/3) ... [2021-11-07 01:59:59,500 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2021-11-07 01:59:59,506 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:59:59,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:59,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:59:59,509 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:59:59,562 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,562 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,562 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,563 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,563 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,564 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,564 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,564 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,565 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,568 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,569 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,570 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,570 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,570 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,571 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,571 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,571 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,572 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,572 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,573 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,573 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,573 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,573 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,575 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,575 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,576 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,576 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,578 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,578 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,578 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,578 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,579 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,579 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,580 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,580 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,580 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,580 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,583 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,583 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,583 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,583 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,585 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,585 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,586 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,587 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,588 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,592 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,594 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,595 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,614 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,614 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,615 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,615 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,615 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,615 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,616 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,618 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,618 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,619 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,620 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,620 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,620 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,621 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,621 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,621 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,621 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,621 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,622 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,622 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,622 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,623 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,624 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,625 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,626 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,627 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,628 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,628 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,628 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,629 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,629 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,629 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,629 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,630 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,630 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,630 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,637 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,638 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,639 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,639 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,640 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,640 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,641 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,642 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,644 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,648 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,648 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,648 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,649 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,651 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,651 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,652 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,652 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,653 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,654 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:59:59,662 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 01:59:59,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:59,729 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 [2021-11-07 01:59:59,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:59:59,749 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:59:59,761 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 231 transitions, 486 flow [2021-11-07 01:59:59,765 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 231 transitions, 486 flow [2021-11-07 01:59:59,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 486 flow [2021-11-07 01:59:59,881 INFO L129 PetriNetUnfolder]: 22/228 cut-off events. [2021-11-07 01:59:59,881 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 01:59:59,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 228 events. 22/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2021-11-07 01:59:59,895 INFO L116 LiptonReduction]: Number of co-enabled transitions 1962 [2021-11-07 02:00:29,871 INFO L131 LiptonReduction]: Checked pairs total: 2782 [2021-11-07 02:00:29,871 INFO L133 LiptonReduction]: Total number of compositions: 243 [2021-11-07 02:00:29,881 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 94 flow [2021-11-07 02:00:29,907 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 173 states, 172 states have (on average 3.372093023255814) internal successors, (580), 172 states have internal predecessors, (580), 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) [2021-11-07 02:00:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 172 states have (on average 3.372093023255814) internal successors, (580), 172 states have internal predecessors, (580), 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) [2021-11-07 02:00:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 02:00:29,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:29,924 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] [2021-11-07 02:00:29,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:29,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1437246171, now seen corresponding path program 1 times [2021-11-07 02:00:29,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:29,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417769869] [2021-11-07 02:00:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:29,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:29,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:29,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:00:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:30,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:00:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:30,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:30,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:30,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417769869] [2021-11-07 02:00:30,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417769869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:30,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:30,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:00:30,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410069459] [2021-11-07 02:00:30,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:00:30,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:00:30,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:30,462 INFO L87 Difference]: Start difference. First operand has 173 states, 172 states have (on average 3.372093023255814) internal successors, (580), 172 states have internal predecessors, (580), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-07 02:00:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:30,490 INFO L93 Difference]: Finished difference Result 173 states and 542 transitions. [2021-11-07 02:00:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:00:30,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2021-11-07 02:00:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:30,509 INFO L225 Difference]: With dead ends: 173 [2021-11-07 02:00:30,509 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 02:00:30,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 02:00:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-07 02:00:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 3.1511627906976742) internal successors, (542), 172 states have internal predecessors, (542), 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) [2021-11-07 02:00:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 542 transitions. [2021-11-07 02:00:30,623 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 542 transitions. Word has length 22 [2021-11-07 02:00:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:30,623 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 542 transitions. [2021-11-07 02:00:30,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-11-07 02:00:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 542 transitions. [2021-11-07 02:00:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 02:00:30,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:30,633 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] [2021-11-07 02:00:30,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:30,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:30,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2119307627, now seen corresponding path program 1 times [2021-11-07 02:00:30,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:30,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183015179] [2021-11-07 02:00:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:30,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:30,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:30,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:00:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:31,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:00:31,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:31,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:31,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:31,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183015179] [2021-11-07 02:00:31,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183015179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:31,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:31,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:00:31,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141397555] [2021-11-07 02:00:31,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:31,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:31,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:31,482 INFO L87 Difference]: Start difference. First operand 173 states and 542 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-07 02:00:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:31,581 INFO L93 Difference]: Finished difference Result 219 states and 690 transitions. [2021-11-07 02:00:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 23 [2021-11-07 02:00:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:31,593 INFO L225 Difference]: With dead ends: 219 [2021-11-07 02:00:31,593 INFO L226 Difference]: Without dead ends: 219 [2021-11-07 02:00:31,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-07 02:00:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-07 02:00:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.165137614678899) internal successors, (690), 218 states have internal predecessors, (690), 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) [2021-11-07 02:00:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 690 transitions. [2021-11-07 02:00:31,631 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 690 transitions. Word has length 23 [2021-11-07 02:00:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:31,631 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 690 transitions. [2021-11-07 02:00:31,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-07 02:00:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 690 transitions. [2021-11-07 02:00:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 02:00:31,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:31,635 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] [2021-11-07 02:00:31,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:31,852 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1154375049, now seen corresponding path program 2 times [2021-11-07 02:00:31,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:31,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790501375] [2021-11-07 02:00:31,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:00:31,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:31,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:31,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:31,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:00:32,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:00:32,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:32,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:32,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:32,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:32,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:32,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790501375] [2021-11-07 02:00:32,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790501375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:32,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:32,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:00:32,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619421615] [2021-11-07 02:00:32,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:00:32,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:00:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:00:32,243 INFO L87 Difference]: Start difference. First operand 219 states and 690 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 02:00:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:32,276 INFO L93 Difference]: Finished difference Result 388 states and 1226 transitions. [2021-11-07 02:00:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 02:00:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:32,286 INFO L225 Difference]: With dead ends: 388 [2021-11-07 02:00:32,286 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 02:00:32,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:00:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 02:00:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 263. [2021-11-07 02:00:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.187022900763359) internal successors, (835), 262 states have internal predecessors, (835), 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) [2021-11-07 02:00:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 835 transitions. [2021-11-07 02:00:32,341 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 835 transitions. Word has length 23 [2021-11-07 02:00:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:32,341 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 835 transitions. [2021-11-07 02:00:32,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 02:00:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 835 transitions. [2021-11-07 02:00:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:00:32,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:32,345 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] [2021-11-07 02:00:32,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:32,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1669257860, now seen corresponding path program 1 times [2021-11-07 02:00:32,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:32,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123989357] [2021-11-07 02:00:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:32,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:32,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:32,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:00:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:32,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:32,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:33,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:33,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123989357] [2021-11-07 02:00:33,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123989357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:33,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:33,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:00:33,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750825623] [2021-11-07 02:00:33,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:33,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:33,128 INFO L87 Difference]: Start difference. First operand 263 states and 835 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-07 02:00:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:33,195 INFO L93 Difference]: Finished difference Result 197 states and 616 transitions. [2021-11-07 02:00:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:33,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 25 [2021-11-07 02:00:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:33,199 INFO L225 Difference]: With dead ends: 197 [2021-11-07 02:00:33,199 INFO L226 Difference]: Without dead ends: 197 [2021-11-07 02:00:33,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-07 02:00:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-07 02:00:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 3.142857142857143) internal successors, (616), 196 states have internal predecessors, (616), 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) [2021-11-07 02:00:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 616 transitions. [2021-11-07 02:00:33,216 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 616 transitions. Word has length 25 [2021-11-07 02:00:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:33,217 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 616 transitions. [2021-11-07 02:00:33,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-07 02:00:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 616 transitions. [2021-11-07 02:00:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:00:33,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:33,219 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] [2021-11-07 02:00:33,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:33,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:33,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:33,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1245330434, now seen corresponding path program 2 times [2021-11-07 02:00:33,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:33,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347777695] [2021-11-07 02:00:33,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:00:33,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:33,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:33,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:33,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:00:33,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:00:33,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:33,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:00:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:33,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:34,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:34,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347777695] [2021-11-07 02:00:34,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347777695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:34,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:34,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:00:34,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643231608] [2021-11-07 02:00:34,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:00:34,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:00:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:00:34,041 INFO L87 Difference]: Start difference. First operand 197 states and 616 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-07 02:00:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:34,217 INFO L93 Difference]: Finished difference Result 229 states and 677 transitions. [2021-11-07 02:00:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 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 25 [2021-11-07 02:00:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:34,221 INFO L225 Difference]: With dead ends: 229 [2021-11-07 02:00:34,221 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 02:00:34,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:00:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 02:00:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 02:00:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.1319796954314723) internal successors, (617), 197 states have internal predecessors, (617), 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) [2021-11-07 02:00:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 617 transitions. [2021-11-07 02:00:34,235 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 617 transitions. Word has length 25 [2021-11-07 02:00:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:34,235 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 617 transitions. [2021-11-07 02:00:34,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-07 02:00:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 617 transitions. [2021-11-07 02:00:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 02:00:34,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:34,238 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] [2021-11-07 02:00:34,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:34,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:34,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1851081623, now seen corresponding path program 1 times [2021-11-07 02:00:34,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:34,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815523245] [2021-11-07 02:00:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:34,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:34,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:34,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:00:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:00:34,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:35,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:35,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:35,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815523245] [2021-11-07 02:00:35,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815523245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:35,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1705753126] [2021-11-07 02:00:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:35,646 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:35,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:35,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:35,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:00:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:36,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:00:36,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:36,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:36,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1705753126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:36,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:00:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:00:36,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821534374] [2021-11-07 02:00:36,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:00:36,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:00:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:00:36,442 INFO L87 Difference]: Start difference. First operand 198 states and 617 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:36,576 INFO L93 Difference]: Finished difference Result 261 states and 758 transitions. [2021-11-07 02:00:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-07 02:00:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:36,581 INFO L225 Difference]: With dead ends: 261 [2021-11-07 02:00:36,581 INFO L226 Difference]: Without dead ends: 199 [2021-11-07 02:00:36,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:00:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-07 02:00:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-11-07 02:00:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 3.121212121212121) internal successors, (618), 198 states have internal predecessors, (618), 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) [2021-11-07 02:00:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 618 transitions. [2021-11-07 02:00:36,592 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 618 transitions. Word has length 26 [2021-11-07 02:00:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:36,593 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 618 transitions. [2021-11-07 02:00:36,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 618 transitions. [2021-11-07 02:00:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:00:36,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:36,596 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] [2021-11-07 02:00:36,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:36,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:37,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:37,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2020286348, now seen corresponding path program 1 times [2021-11-07 02:00:37,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:37,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440858940] [2021-11-07 02:00:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:37,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:37,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:37,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:37,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:00:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:37,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:00:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:37,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:38,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440858940] [2021-11-07 02:00:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440858940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839471679] [2021-11-07 02:00:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:38,347 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:38,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:38,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:38,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:00:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:38,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:00:38,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:39,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839471679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:39,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:00:39,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:00:39,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118825811] [2021-11-07 02:00:39,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:00:39,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:39,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:00:39,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:00:39,210 INFO L87 Difference]: Start difference. First operand 199 states and 618 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-07 02:00:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:39,342 INFO L93 Difference]: Finished difference Result 315 states and 937 transitions. [2021-11-07 02:00:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:39,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 27 [2021-11-07 02:00:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:39,347 INFO L225 Difference]: With dead ends: 315 [2021-11-07 02:00:39,347 INFO L226 Difference]: Without dead ends: 200 [2021-11-07 02:00:39,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:00:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-07 02:00:39,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-07 02:00:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.1105527638190953) internal successors, (619), 199 states have internal predecessors, (619), 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) [2021-11-07 02:00:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 619 transitions. [2021-11-07 02:00:39,357 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 619 transitions. Word has length 27 [2021-11-07 02:00:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:39,357 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 619 transitions. [2021-11-07 02:00:39,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-07 02:00:39,357 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 619 transitions. [2021-11-07 02:00:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 02:00:39,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:39,359 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] [2021-11-07 02:00:39,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:39,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:00:39,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:39,763 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1447400914, now seen corresponding path program 1 times [2021-11-07 02:00:39,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:39,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886102221] [2021-11-07 02:00:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:39,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:39,766 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:39,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:00:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:40,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:00:40,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:40,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:41,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:41,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886102221] [2021-11-07 02:00:41,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886102221] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:41,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [628456511] [2021-11-07 02:00:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:41,095 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:41,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:41,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:00:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:41,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:00:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:41,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:42,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [628456511] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:42,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195326701] [2021-11-07 02:00:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:42,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:42,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:42,235 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:42,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 02:00:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:42,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:00:42,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:42,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:00:43,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195326701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:43,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:00:43,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2021-11-07 02:00:43,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743378577] [2021-11-07 02:00:43,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 02:00:43,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 02:00:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:00:43,322 INFO L87 Difference]: Start difference. First operand 200 states and 619 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 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) [2021-11-07 02:00:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:43,676 INFO L93 Difference]: Finished difference Result 368 states and 1100 transitions. [2021-11-07 02:00:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:00:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 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 28 [2021-11-07 02:00:43,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:43,680 INFO L225 Difference]: With dead ends: 368 [2021-11-07 02:00:43,680 INFO L226 Difference]: Without dead ends: 201 [2021-11-07 02:00:43,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:00:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-07 02:00:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-07 02:00:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 3.1) internal successors, (620), 200 states have internal predecessors, (620), 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) [2021-11-07 02:00:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 620 transitions. [2021-11-07 02:00:43,690 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 620 transitions. Word has length 28 [2021-11-07 02:00:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:43,690 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 620 transitions. [2021-11-07 02:00:43,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 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) [2021-11-07 02:00:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 620 transitions. [2021-11-07 02:00:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 02:00:43,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:43,692 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:43,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:43,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:44,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:44,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:44,296 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-07 02:00:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -751572981, now seen corresponding path program 2 times [2021-11-07 02:00:44,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:44,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976578877] [2021-11-07 02:00:44,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:00:44,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:44,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:44,298 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:44,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:00:44,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:00:44,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 02:00:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:45,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2021-11-07 02:00:45,402 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-07 02:00:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-11-07 02:04:07,486 WARN L207 SmtUtils]: Spent 3.29 m on a formula simplification. DAG size of input: 375 DAG size of output: 130 [2021-11-07 02:04:07,489 INFO L354 Elim1Store]: treesize reduction 2036, result has 18.2 percent of original size [2021-11-07 02:04:07,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 123 treesize of output 499 [2021-11-07 02:09:28,557 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 02:09:28,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 02:09:28,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:28,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976578877] [2021-11-07 02:09:28,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 02:09:28,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [957681120] [2021-11-07 02:09:28,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:09:28,560 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:28,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:28,562 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:28,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:09:29,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:09:29,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21572076] [2021-11-07 02:09:29,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:09:29,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:29,803 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:29,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 1 [2021-11-07 02:09:29,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 02:09:30,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:09:30,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:09:30,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 02:09:30,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:30,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 02:09:30,350 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 02:09:30,351 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 02:09:30,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:09:30,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 02:09:30,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 02:09:30,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 02:09:30,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 02:09:30,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 02:09:30,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e30a38a-481f-4914-91f6-dcf1074078fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:30,774 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2021-11-07 02:09:30,778 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 02:09:30,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:09:30,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:09:30 BasicIcfg [2021-11-07 02:09:30,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:09:30,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:09:30,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:09:30,823 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:09:30,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:59" (3/4) ... [2021-11-07 02:09:30,827 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:09:30,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:09:30,828 INFO L168 Benchmark]: Toolchain (without parser) took 573887.54 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 39.2 MB in the beginning and 54.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,828 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:30,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.29 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 42.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.87 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 39.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,830 INFO L168 Benchmark]: Boogie Preprocessor took 47.17 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 37.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,831 INFO L168 Benchmark]: RCFGBuilder took 1993.19 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 37.2 MB in the beginning and 44.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,831 INFO L168 Benchmark]: TraceAbstraction took 571329.07 ms. Allocated memory was 79.7 MB in the beginning and 119.5 MB in the end (delta: 39.8 MB). Free memory was 43.8 MB in the beginning and 54.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:30,832 INFO L168 Benchmark]: Witness Printer took 4.73 ms. Allocated memory is still 119.5 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:30,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.29 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 42.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.87 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 39.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.17 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 37.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1993.19 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 37.2 MB in the beginning and 44.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 571329.07 ms. Allocated memory was 79.7 MB in the beginning and 119.5 MB in the end (delta: 39.8 MB). Free memory was 43.8 MB in the beginning and 54.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.73 ms. Allocated memory is still 119.5 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.1s, 219 PlacesBefore, 38 PlacesAfterwards, 231 TransitionsBefore, 35 TransitionsAfterwards, 1962 CoEnabledTransitionPairs, 7 FixpointIterations, 151 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 12 ConcurrentYvCompositions, 15 ChoiceCompositions, 243 TotalNumberOfCompositions, 2782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2006, positive: 1924, positive conditional: 0, positive unconditional: 1924, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1428, positive: 1403, positive conditional: 0, positive unconditional: 1403, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1428, positive: 1398, positive conditional: 0, positive unconditional: 1398, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1590, positive: 466, positive conditional: 0, positive unconditional: 466, negative: 1125, negative conditional: 0, negative unconditional: 1125, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2006, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 1428, unknown conditional: 0, unknown unconditional: 1428] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 150]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int* q1; [L42] 0 int* q2; [L43] 0 int* q3; [L44] 0 int q1_front, q1_back, q2_front, q2_back, q3_front, q3_back, N, r, n1, n2, n3; [L118] 0 pthread_t t1, t2, t3; [L121] 0 N = __VERIFIER_nondet_int() [L123] 0 n1 = __VERIFIER_nondet_int() [L124] 0 n2 = __VERIFIER_nondet_int() [L125] 0 n3 = __VERIFIER_nondet_int() [L38] COND TRUE 0 !cond [L38] COND TRUE 0 !cond [L159] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L160] 0 int i = 0; [L160] COND TRUE 0 i < size [L161] 0 arr[i] = __VERIFIER_nondet_int() [L160] 0 i++ [L160] COND TRUE 0 i < size [L161] 0 arr[i] = __VERIFIER_nondet_int() [L160] 0 i++ [L163] 0 return arr; [L127] 0 q1 = create_fresh_int_array(n1) [L38] COND FALSE 0 !(!cond) [L38] COND FALSE 0 !(!cond) [L159] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L160] 0 int i = 0; [L160] COND TRUE 0 i < size [L161] 0 arr[i] = __VERIFIER_nondet_int() [L160] 0 i++ [L163] 0 return arr; [L128] 0 q2 = create_fresh_int_array(n2) [L38] COND FALSE 0 !(!cond) [L38] COND TRUE 0 !cond [L159] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L160] 0 int i = 0; [L160] COND TRUE 0 i < size [L161] 0 arr[i] = __VERIFIER_nondet_int() [L160] 0 i++ [L160] COND FALSE 0 !(i < size) [L163] 0 return arr; [L129] 0 q3 = create_fresh_int_array(n3) [L131] 0 q1_front = __VERIFIER_nondet_int() [L132] 0 q2_front = __VERIFIER_nondet_int() [L133] 0 q3_front = __VERIFIER_nondet_int() [L135] 0 q1_back = q1_front [L136] 0 q2_back = q2_front [L137] 0 q3_back = q3_front [L38] COND FALSE 0 !(!cond) [L142] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L49] 1 int i = 0; [L50] 1 int l; [L51] 1 r = 0 [L52] COND TRUE 1 i < N [L54] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == 2 [L38] COND TRUE 1 !cond [L55] 1 q1_back++ [L143] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L74] 2 int s = 0; [L75] 2 int j; [L144] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L145] 0 \read(t1) [L96] 3 int t = 0; [L97] 3 int k; [L76] COND TRUE 2 1 [L38] COND FALSE 2 !(!cond) [L79] EXPR 2 q1[q1_front] [L79] 2 j = q1[q1_front] [L80] 2 q1_front++ [L83] 2 q2_back >= 0 && q2_back < n2 && q2[q2_back] == j-1 [L83] EXPR 2 q2[q2_back] [L83] 2 q2_back >= 0 && q2_back < n2 && q2[q2_back] == j-1 [L38] COND TRUE 2 !cond [L84] 2 q2_back++ [L86] 2 s = s + j [L87] COND TRUE 2 j <= 0 [L92] 2 return 0; [L98] COND TRUE 3 1 [L38] COND TRUE 3 !cond [L101] EXPR 3 q2[q2_front] [L101] 3 k = q2[q2_front] [L102] 3 q2_front++ [L105] 3 q3_back >= 0 && q3_back < n3 && q3[q3_back] == k-1 [L105] EXPR 3 q3[q3_back] [L105] 3 q3_back >= 0 && q3_back < n3 && q3[q3_back] == k-1 [L38] COND TRUE 3 !cond [L106] 3 q3_back++ [L108] 3 t = t + k [L109] COND TRUE 3 k <= 0 [L114] 3 return 0; [L38] COND FALSE 1 !(!cond) [L59] EXPR 1 q3[q3_front] [L59] 1 l = q3[q3_front] [L60] 1 q3_front++ [L62] 1 r = r + l [L63] 1 i++ [L52] COND FALSE 1 !(i < N) [L66] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == 0 [L38] COND FALSE 1 !(!cond) [L67] 1 q1_back++ [L70] 1 return 0; [L145] FCALL, JOIN 1 pthread_join(t1, 0) [L146] 0 \read(t2) [L146] FCALL, JOIN 2 pthread_join(t2, 0) [L147] 0 \read(t3) [L147] FCALL, JOIN 3 pthread_join(t3, 0) [L38] COND TRUE 0 !cond [L150] 0 reach_error() - UnprovableResult [Line: 143]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 144]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 247 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 571.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 147 SDslu, 414 SDs, 0 SdLazy, 160 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 594 GetRequests, 545 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=3, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 529.9s InterpolantComputationTime, 337 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 592 ConstructedInterpolants, 42 QuantifiedInterpolants, 3272 SizeOfPredicates, 41 NumberOfNonLiveVariables, 2347 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 33/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN