./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:53,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:53,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:53,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:53,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:53,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:53,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:53,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:53,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:53,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:53,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:53,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:53,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:53,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:53,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:53,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:53,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:53,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:53,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:53,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:53,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:53,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:53,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:53,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:53,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:53,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:53,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:53,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:53,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:53,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:53,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:53,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:53,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:53,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:53,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:53,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:53,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:53,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:53,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:53,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:53,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:53,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:08:53,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:53,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:53,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:53,293 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:53,294 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:53,294 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:53,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:53,294 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:53,295 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:53,295 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:53,303 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:53,303 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:53,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:53,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:53,304 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:53,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:53,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:53,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:53,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:53,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:53,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:53,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:53,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:53,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:53,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:53,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:53,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:53,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:53,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:53,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:53,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:53,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:53,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:53,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:53,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:53,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:53,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:53,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:53,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:53,314 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2021-11-07 02:08:53,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:53,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:53,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:53,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:53,674 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:53,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-07 02:08:53,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/294635657/1b418169aa5a473ab27b76ec76301d4a/FLAGc8c4db1a6 [2021-11-07 02:08:54,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:54,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-07 02:08:54,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/294635657/1b418169aa5a473ab27b76ec76301d4a/FLAGc8c4db1a6 [2021-11-07 02:08:54,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/294635657/1b418169aa5a473ab27b76ec76301d4a [2021-11-07 02:08:54,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:54,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:54,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:54,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:54,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:54,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:54" (1/1) ... [2021-11-07 02:08:54,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b16072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:54, skipping insertion in model container [2021-11-07 02:08:54,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:54" (1/1) ... [2021-11-07 02:08:54,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:54,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:54,984 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-07 02:08:54,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:55,009 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 02:08:55,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6100f5e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:55, skipping insertion in model container [2021-11-07 02:08:55,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:55,010 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:08:55,012 INFO L168 Benchmark]: Toolchain (without parser) took 358.57 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 68.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:55,013 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 23.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:08:55,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.86 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 68.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:08:55,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 23.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.86 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 68.6 MB in the end (delta: -10.3 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: 157]: 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:57,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:57,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:57,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:57,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:57,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:57,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:57,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:57,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:57,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:57,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:57,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:57,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:57,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:57,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:57,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:57,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:57,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:57,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:57,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:57,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:57,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:57,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:57,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:57,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:57,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:57,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:57,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:57,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:57,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:57,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:57,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:57,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:57,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:57,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:57,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:57,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:57,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:57,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:57,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:57,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:57,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:08:57,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:57,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:57,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:57,748 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:57,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:57,749 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:57,749 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:57,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:57,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:57,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:57,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:08:57,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:08:57,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:57,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:57,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:57,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:57,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:08:57,755 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:08:57,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:08:57,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:08:57,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:57,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:57,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:57,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:57,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:08:57,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:57,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:57,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:57,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:57,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:57,759 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:08:57,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:57,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:57,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:57,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:57,760 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2021-11-07 02:08:58,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:58,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:58,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:58,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:58,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:58,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-07 02:08:58,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/81f6c2f99/4b95133f4e9b4db9bc4b87ec1a2d0be4/FLAG9ba01ec3f [2021-11-07 02:08:58,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:58,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2021-11-07 02:08:58,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/81f6c2f99/4b95133f4e9b4db9bc4b87ec1a2d0be4/FLAG9ba01ec3f [2021-11-07 02:08:59,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/data/81f6c2f99/4b95133f4e9b4db9bc4b87ec1a2d0be4 [2021-11-07 02:08:59,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:59,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:59,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:59,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:59,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:59,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:08:59,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8c77f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59, skipping insertion in model container [2021-11-07 02:08:59,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:08:59,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:59,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:59,644 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-07 02:08:59,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:59,718 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:08:59,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:59,802 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-07 02:08:59,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:59,830 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:59,881 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_bf401ca4-ec9e-466e-8783-d00ba0d67d79/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2021-11-07 02:08:59,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:59,923 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:59,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59 WrapperNode [2021-11-07 02:08:59,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:59,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:59,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:59,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:59,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:08:59,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:00,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:09:00,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:09:00,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:09:00,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:09:00,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:09:00,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:09:00,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:09:00,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (1/1) ... [2021-11-07 02:09:00,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:00,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:09:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:09:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:09:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:09:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:09:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 02:09:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 02:09:00,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 02:09:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 02:09:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 02:09:00,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 02:09:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 02:09:00,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 02:09:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:09:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:09:00,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:09:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:09:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:09:00,240 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 02:09:02,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:09:02,064 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-07 02:09:02,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:02 BoogieIcfgContainer [2021-11-07 02:09:02,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:09:02,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:09:02,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:09:02,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:09:02,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:59" (1/3) ... [2021-11-07 02:09:02,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e469848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:02, skipping insertion in model container [2021-11-07 02:09:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:59" (2/3) ... [2021-11-07 02:09:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e469848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:02, skipping insertion in model container [2021-11-07 02:09:02,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:02" (3/3) ... [2021-11-07 02:09:02,089 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2021-11-07 02:09:02,096 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 02:09:02,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:09:02,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:09:02,097 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 02:09:02,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,157 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,158 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,159 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,162 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,163 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,164 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,165 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,165 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,165 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,165 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,165 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,166 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,166 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,167 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,167 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,167 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,167 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,168 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,168 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,171 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,172 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,172 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,173 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,177 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,177 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,177 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,178 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,178 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,179 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,179 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,179 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,180 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,180 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,181 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,182 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,186 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,191 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,200 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,200 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,200 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,201 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,202 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,202 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,202 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,203 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,203 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,203 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,203 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,204 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,207 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,209 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,210 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,212 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,212 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,213 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,214 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,217 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,217 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,218 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,219 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 02:09:02,229 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-07 02:09:02,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:09:02,290 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 02:09:02,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 02:09:02,324 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 02:09:02,337 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 219 transitions, 462 flow [2021-11-07 02:09:02,340 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 219 transitions, 462 flow [2021-11-07 02:09:02,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 219 transitions, 462 flow [2021-11-07 02:09:02,520 INFO L129 PetriNetUnfolder]: 19/216 cut-off events. [2021-11-07 02:09:02,520 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-07 02:09:02,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 19/216 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 182. Up to 2 conditions per place. [2021-11-07 02:09:02,535 INFO L116 LiptonReduction]: Number of co-enabled transitions 1266 [2021-11-07 02:09:27,975 INFO L131 LiptonReduction]: Checked pairs total: 2776 [2021-11-07 02:09:27,976 INFO L133 LiptonReduction]: Total number of compositions: 218 [2021-11-07 02:09:27,984 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 34 transitions, 92 flow [2021-11-07 02:09:28,009 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 161 states, 160 states have (on average 3.13125) internal successors, (501), 160 states have internal predecessors, (501), 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 02:09:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 160 states have (on average 3.13125) internal successors, (501), 160 states have internal predecessors, (501), 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 02:09:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:09:28,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:28,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:28,026 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 02:09:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:28,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1244054961, now seen corresponding path program 1 times [2021-11-07 02:09:28,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:28,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524752077] [2021-11-07 02:09:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:28,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:28,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:28,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:09:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:28,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:28,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:28,426 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 02:09:28,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:28,538 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 02:09:28,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:28,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524752077] [2021-11-07 02:09:28,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524752077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:28,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:28,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-07 02:09:28,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34215231] [2021-11-07 02:09:28,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:28,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:28,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:28,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:28,576 INFO L87 Difference]: Start difference. First operand has 161 states, 160 states have (on average 3.13125) internal successors, (501), 160 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 02:09:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:28,666 INFO L93 Difference]: Finished difference Result 216 states and 666 transitions. [2021-11-07 02:09:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 19 [2021-11-07 02:09:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:28,684 INFO L225 Difference]: With dead ends: 216 [2021-11-07 02:09:28,684 INFO L226 Difference]: Without dead ends: 209 [2021-11-07 02:09:28,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 02:09:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-07 02:09:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2021-11-07 02:09:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 3.11340206185567) internal successors, (604), 194 states have internal predecessors, (604), 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 02:09:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 604 transitions. [2021-11-07 02:09:28,773 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 604 transitions. Word has length 19 [2021-11-07 02:09:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:28,773 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 604 transitions. [2021-11-07 02:09:28,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 02:09:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 604 transitions. [2021-11-07 02:09:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 02:09:28,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:28,778 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] [2021-11-07 02:09:28,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:28,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,991 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 02:09:28,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -289200893, now seen corresponding path program 1 times [2021-11-07 02:09:28,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:28,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801390288] [2021-11-07 02:09:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:28,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:28,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:29,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:09:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:29,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:29,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:29,289 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 02:09:29,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:29,534 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 02:09:29,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:29,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801390288] [2021-11-07 02:09:29,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801390288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:29,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:29,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:29,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965504413] [2021-11-07 02:09:29,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:29,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:29,539 INFO L87 Difference]: Start difference. First operand 195 states and 604 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 02:09:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:29,581 INFO L93 Difference]: Finished difference Result 347 states and 1051 transitions. [2021-11-07 02:09:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 21 [2021-11-07 02:09:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:29,589 INFO L225 Difference]: With dead ends: 347 [2021-11-07 02:09:29,589 INFO L226 Difference]: Without dead ends: 325 [2021-11-07 02:09:29,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 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 02:09:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-07 02:09:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 285. [2021-11-07 02:09:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 3.1338028169014085) internal successors, (890), 284 states have internal predecessors, (890), 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 02:09:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 890 transitions. [2021-11-07 02:09:29,647 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 890 transitions. Word has length 21 [2021-11-07 02:09:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:29,647 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 890 transitions. [2021-11-07 02:09:29,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 02:09:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 890 transitions. [2021-11-07 02:09:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 02:09:29,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:29,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:29,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:29,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:29,871 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 02:09:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash 354215632, now seen corresponding path program 1 times [2021-11-07 02:09:29,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:29,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748547659] [2021-11-07 02:09:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:29,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:29,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:29,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:30,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,178 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 02:09:30,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:30,307 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 02:09:30,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:30,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748547659] [2021-11-07 02:09:30,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748547659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:30,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:30,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:30,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801685500] [2021-11-07 02:09:30,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:30,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:30,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:30,310 INFO L87 Difference]: Start difference. First operand 285 states and 890 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 02:09:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:30,344 INFO L93 Difference]: Finished difference Result 249 states and 743 transitions. [2021-11-07 02:09:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 21 [2021-11-07 02:09:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:30,349 INFO L225 Difference]: With dead ends: 249 [2021-11-07 02:09:30,349 INFO L226 Difference]: Without dead ends: 237 [2021-11-07 02:09:30,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 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 02:09:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-07 02:09:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2021-11-07 02:09:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.0683760683760686) internal successors, (718), 234 states have internal predecessors, (718), 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 02:09:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 718 transitions. [2021-11-07 02:09:30,368 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 718 transitions. Word has length 21 [2021-11-07 02:09:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:30,369 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 718 transitions. [2021-11-07 02:09:30,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 02:09:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 718 transitions. [2021-11-07 02:09:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 02:09:30,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:30,371 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 02:09:30,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:30,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:30,590 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 02:09:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1479871409, now seen corresponding path program 1 times [2021-11-07 02:09:30,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:30,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652468224] [2021-11-07 02:09:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:30,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:30,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:30,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:30,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,892 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 02:09:30,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:31,022 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 02:09:31,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:31,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652468224] [2021-11-07 02:09:31,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652468224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:31,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:31,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:09:31,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919769815] [2021-11-07 02:09:31,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:31,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:31,027 INFO L87 Difference]: Start difference. First operand 235 states and 718 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 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 02:09:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:31,071 INFO L93 Difference]: Finished difference Result 155 states and 461 transitions. [2021-11-07 02:09:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:31,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 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 23 [2021-11-07 02:09:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:31,077 INFO L225 Difference]: With dead ends: 155 [2021-11-07 02:09:31,077 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 02:09:31,077 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 02:09:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 02:09:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-07 02:09:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 3.02) internal successors, (453), 150 states have internal predecessors, (453), 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 02:09:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 453 transitions. [2021-11-07 02:09:31,093 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 453 transitions. Word has length 23 [2021-11-07 02:09:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:31,094 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 453 transitions. [2021-11-07 02:09:31,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 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 02:09:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 453 transitions. [2021-11-07 02:09:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:09:31,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:31,096 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 02:09:31,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:31,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:31,308 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 02:09:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:31,309 INFO L85 PathProgramCache]: Analyzing trace with hash -373915035, now seen corresponding path program 1 times [2021-11-07 02:09:31,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:31,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718126417] [2021-11-07 02:09:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:31,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:31,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:31,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:31,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:31,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:31,749 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 02:09:31,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:31,845 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 02:09:31,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:31,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718126417] [2021-11-07 02:09:31,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718126417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:31,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:31,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:09:31,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542962309] [2021-11-07 02:09:31,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:31,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:31,849 INFO L87 Difference]: Start difference. First operand 151 states and 453 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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 02:09:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:32,012 INFO L93 Difference]: Finished difference Result 165 states and 472 transitions. [2021-11-07 02:09:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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 02:09:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:32,016 INFO L225 Difference]: With dead ends: 165 [2021-11-07 02:09:32,016 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 02:09:32,016 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 02:09:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 02:09:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-07 02:09:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 3.006622516556291) internal successors, (454), 151 states have internal predecessors, (454), 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 02:09:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 454 transitions. [2021-11-07 02:09:32,025 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 454 transitions. Word has length 25 [2021-11-07 02:09:32,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:32,025 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 454 transitions. [2021-11-07 02:09:32,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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 02:09:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 454 transitions. [2021-11-07 02:09:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 02:09:32,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:32,027 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 02:09:32,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:32,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,241 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 02:09:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 961350900, now seen corresponding path program 1 times [2021-11-07 02:09:32,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:32,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749685905] [2021-11-07 02:09:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:32,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:32,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:32,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:09:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:32,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:09:32,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:32,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:33,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:33,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749685905] [2021-11-07 02:09:33,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749685905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:33,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [641507503] [2021-11-07 02:09:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:33,739 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:33,748 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:33,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:09:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:34,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:34,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:34,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:34,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [641507503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:34,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:34,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 15 [2021-11-07 02:09:34,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369633559] [2021-11-07 02:09:34,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:34,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:09:34,522 INFO L87 Difference]: Start difference. First operand 152 states and 454 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 02:09:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:34,630 INFO L93 Difference]: Finished difference Result 172 states and 485 transitions. [2021-11-07 02:09:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:09:34,632 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 02:09:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:34,633 INFO L225 Difference]: With dead ends: 172 [2021-11-07 02:09:34,634 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 02:09:34,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:09:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 02:09:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-07 02:09:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.9934210526315788) internal successors, (455), 152 states have internal predecessors, (455), 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 02:09:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 455 transitions. [2021-11-07 02:09:34,642 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 455 transitions. Word has length 26 [2021-11-07 02:09:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:34,643 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 455 transitions. [2021-11-07 02:09:34,643 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 02:09:34,643 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 455 transitions. [2021-11-07 02:09:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:09:34,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:34,645 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 02:09:34,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:34,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:35,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:35,069 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 02:09:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1596955692, now seen corresponding path program 1 times [2021-11-07 02:09:35,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:35,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054007046] [2021-11-07 02:09:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:35,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:35,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:35,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:35,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:35,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:09:35,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:35,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:09:36,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:36,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054007046] [2021-11-07 02:09:36,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054007046] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:36,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1479396522] [2021-11-07 02:09:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:36,569 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:36,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:36,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:09:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:36,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:36,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:37,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:37,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1479396522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:37,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:37,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [6, 6] total 15 [2021-11-07 02:09:37,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013985690] [2021-11-07 02:09:37,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:37,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:09:37,266 INFO L87 Difference]: Start difference. First operand 153 states and 455 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 02:09:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:37,347 INFO L93 Difference]: Finished difference Result 187 states and 517 transitions. [2021-11-07 02:09:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:37,360 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 02:09:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:37,362 INFO L225 Difference]: With dead ends: 187 [2021-11-07 02:09:37,363 INFO L226 Difference]: Without dead ends: 154 [2021-11-07 02:09:37,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:09:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-07 02:09:37,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-07 02:09:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.980392156862745) internal successors, (456), 153 states have internal predecessors, (456), 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 02:09:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 456 transitions. [2021-11-07 02:09:37,371 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 456 transitions. Word has length 27 [2021-11-07 02:09:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:37,372 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 456 transitions. [2021-11-07 02:09:37,372 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 02:09:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 456 transitions. [2021-11-07 02:09:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 02:09:37,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:37,374 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 02:09:37,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:37,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:37,779 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 02:09:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1408310570, now seen corresponding path program 1 times [2021-11-07 02:09:37,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:37,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373293416] [2021-11-07 02:09:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:37,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:37,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:37,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:09:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:38,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:09:38,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:38,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:39,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:39,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373293416] [2021-11-07 02:09:39,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373293416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:39,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [782518971] [2021-11-07 02:09:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:39,302 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:39,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:39,303 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:39,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:09:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:39,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:09:39,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:40,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:41,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [782518971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:41,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105701059] [2021-11-07 02:09:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:41,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:41,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:41,159 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:41,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 02:09:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:41,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:09:41,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:41,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:09:42,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105701059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:42,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:09:42,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 27 [2021-11-07 02:09:42,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606000763] [2021-11-07 02:09:42,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 02:09:42,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 02:09:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-11-07 02:09:42,756 INFO L87 Difference]: Start difference. First operand 154 states and 456 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 27 states have internal predecessors, (101), 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 02:09:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:45,571 INFO L93 Difference]: Finished difference Result 440 states and 1288 transitions. [2021-11-07 02:09:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 02:09:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 27 states have internal predecessors, (101), 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 02:09:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:45,578 INFO L225 Difference]: With dead ends: 440 [2021-11-07 02:09:45,578 INFO L226 Difference]: Without dead ends: 397 [2021-11-07 02:09:45,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2021-11-07 02:09:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-07 02:09:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 305. [2021-11-07 02:09:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 3.200657894736842) internal successors, (973), 304 states have internal predecessors, (973), 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 02:09:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 973 transitions. [2021-11-07 02:09:45,595 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 973 transitions. Word has length 28 [2021-11-07 02:09:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:45,596 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 973 transitions. [2021-11-07 02:09:45,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 27 states have internal predecessors, (101), 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 02:09:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 973 transitions. [2021-11-07 02:09:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:09:45,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:45,598 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, 1, 1] [2021-11-07 02:09:45,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:45,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:46,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:46,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:46,214 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 02:09:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2118112010, now seen corresponding path program 1 times [2021-11-07 02:09:46,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:46,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080628654] [2021-11-07 02:09:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:46,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:46,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:46,215 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:46,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf401ca4-ec9e-466e-8783-d00ba0d67d79/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:09:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:46,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 02:09:46,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:09:53,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:56,771 WARN L838 $PredicateComparison]: unable to prove that (forall ((~client~0.offset (_ BitVec 32)) (~client~0.base (_ BitVec 32))) (let ((.cse3 (select |c_#memory_int| c_~manager~0.base))) (let ((.cse0 (select |c_#memory_int| ~client~0.base)) (.cse2 (let ((.cse6 (bvmul c_~manager_back~0 (_ bv4 32)))) (concat (concat (concat (select .cse3 (bvadd .cse6 (_ bv3 32) c_~manager~0.offset)) (select .cse3 (bvadd .cse6 (_ bv2 32) c_~manager~0.offset))) (select .cse3 (bvadd .cse6 c_~manager~0.offset (_ bv1 32)))) (select .cse3 (bvadd .cse6 c_~manager~0.offset)))))) (or (and (= (let ((.cse1 (bvmul c_~client_front~0 (_ bv4 32)))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) ~client~0.offset .cse1)) (select .cse0 (bvadd (_ bv2 32) ~client~0.offset .cse1))) (select .cse0 (bvadd ~client~0.offset (_ bv1 32) .cse1))) (select .cse0 (bvadd ~client~0.offset .cse1)))) .cse2) (not (= (_ bv0 8) c_~safe~0)) (= (let ((.cse4 (bvmul c_~manager_front~0 (_ bv4 32)))) (concat (concat (concat (select .cse3 (bvadd (_ bv3 32) .cse4 c_~manager~0.offset)) (select .cse3 (bvadd (_ bv2 32) .cse4 c_~manager~0.offset))) (select .cse3 (bvadd .cse4 c_~manager~0.offset (_ bv1 32)))) (select .cse3 (bvadd .cse4 c_~manager~0.offset)))) .cse2)) (not (= (let ((.cse5 (bvmul c_~client_back~0 (_ bv4 32)))) (concat (concat (concat (select .cse0 (bvadd .cse5 (_ bv3 32) ~client~0.offset)) (select .cse0 (bvadd .cse5 (_ bv2 32) ~client~0.offset))) (select .cse0 (bvadd .cse5 ~client~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse5 ~client~0.offset)))) .cse2)))))) is different from false [2021-11-07 02:12:24,437 WARN L207 SmtUtils]: Spent 1.83 m on a formula simplification. DAG size of input: 2077 DAG size of output: 1437 [2021-11-07 02:12:24,473 INFO L354 Elim1Store]: treesize reduction 3202, result has 67.0 percent of original size [2021-11-07 02:12:24,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 496 case distinctions, treesize of input 522 treesize of output 6598