./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c93df231a232d44c5f0140cab5c9293e7925dc71 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c93df231a232d44c5f0140cab5c9293e7925dc71 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:48,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:48,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:48,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:48,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:48,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:48,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:48,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:48,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:48,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:48,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:48,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:48,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:48,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:48,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:49,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:49,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:49,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:49,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:49,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:49,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:49,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:49,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:49,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:49,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:49,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:49,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:49,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:49,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:49,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:49,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:49,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:49,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:49,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:49,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:49,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:49,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:49,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:49,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:49,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:49,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:49,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:54:49,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:49,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:49,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:49,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:49,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:49,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:49,105 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:54:49,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:49,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:49,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:54:49,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:54:49,114 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:49,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:54:49,115 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:54:49,115 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:54:49,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:49,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:49,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:49,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:49,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:49,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:49,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:49,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:49,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:49,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:49,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:49,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:49,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:49,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:49,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:49,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:49,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:49,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:49,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:49,122 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:54:49,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:54:49,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:49,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:49,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:49,123 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c93df231a232d44c5f0140cab5c9293e7925dc71 [2021-10-16 01:54:49,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:49,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:49,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:49,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:49,435 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:49,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-10-16 01:54:49,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/6a400dada/2fec9f0988cb48c3a8710040e7c901bf/FLAG90c8c24ac [2021-10-16 01:54:50,111 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:50,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-10-16 01:54:50,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/6a400dada/2fec9f0988cb48c3a8710040e7c901bf/FLAG90c8c24ac [2021-10-16 01:54:50,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/6a400dada/2fec9f0988cb48c3a8710040e7c901bf [2021-10-16 01:54:50,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:50,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:50,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:50,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:50,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:50,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:50" (1/1) ... [2021-10-16 01:54:50,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf2b0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:50, skipping insertion in model container [2021-10-16 01:54:50,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:50" (1/1) ... [2021-10-16 01:54:50,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:50,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:50,724 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[3604,3617] [2021-10-16 01:54:50,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:50,747 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) [2021-10-16 01:54:50,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e7ac881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:50, skipping insertion in model container [2021-10-16 01:54:50,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:50,749 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 01:54:50,751 INFO L168 Benchmark]: Toolchain (without parser) took 302.28 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 53.5 MB in the beginning and 86.6 MB in the end (delta: -33.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:50,752 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:50,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.46 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 53.4 MB in the beginning and 86.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:50,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.46 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 53.4 MB in the beginning and 86.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 137]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:53,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:53,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:53,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:53,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:53,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:53,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:53,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:53,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:53,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:53,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:53,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:53,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:53,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:53,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:53,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:53,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:53,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:53,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:53,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:53,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:53,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:53,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:53,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:53,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:53,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:53,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:53,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:53,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:53,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:53,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:53,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:53,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:53,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:53,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:53,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:53,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:53,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:53,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:53,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:53,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:53,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:54:53,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:53,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:53,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:53,329 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:53,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:53,329 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:53,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:53,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:53,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:53,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:53,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:53,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:53,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:53,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:53,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:53,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:53,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:53,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:54:53,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:54:53,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:53,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:53,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:53,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:53,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:53,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:54:53,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:53,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:53,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:53,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:53,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:53,338 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:54:53,338 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:54:53,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:53,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:53,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:53,339 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c93df231a232d44c5f0140cab5c9293e7925dc71 [2021-10-16 01:54:53,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:53,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:53,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:53,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:53,826 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:53,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-10-16 01:54:53,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/44cc0e1e1/9ea35a0fe273401cb3d195313a69936b/FLAG140a1ac44 [2021-10-16 01:54:54,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:54,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2021-10-16 01:54:54,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/44cc0e1e1/9ea35a0fe273401cb3d195313a69936b/FLAG140a1ac44 [2021-10-16 01:54:54,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/data/44cc0e1e1/9ea35a0fe273401cb3d195313a69936b [2021-10-16 01:54:54,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:54,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:54,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:54,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:54,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:54,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:54" (1/1) ... [2021-10-16 01:54:54,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a75a22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:54, skipping insertion in model container [2021-10-16 01:54:54,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:54" (1/1) ... [2021-10-16 01:54:54,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:54,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:55,231 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[3604,3617] [2021-10-16 01:54:55,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:55,290 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 01:54:55,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:55,399 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[3604,3617] [2021-10-16 01:54:55,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:55,431 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:55,489 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_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[3604,3617] [2021-10-16 01:54:55,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:55,535 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:55,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55 WrapperNode [2021-10-16 01:54:55,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:55,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:55,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:55,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:55,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:55,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:55,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:55,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:55,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:55,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:55,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:55,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:55,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (1/1) ... [2021-10-16 01:54:55,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:55,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:55,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:54:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:54:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-16 01:54:55,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-16 01:54:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-16 01:54:55,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-16 01:54:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-16 01:54:55,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-16 01:54:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-16 01:54:55,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-16 01:54:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-16 01:54:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-16 01:54:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 01:54:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:55,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 01:54:55,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-16 01:54:57,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:57,664 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-16 01:54:57,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:57 BoogieIcfgContainer [2021-10-16 01:54:57,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:57,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:57,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:57,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:57,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:54" (1/3) ... [2021-10-16 01:54:57,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa3468f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:57, skipping insertion in model container [2021-10-16 01:54:57,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:55" (2/3) ... [2021-10-16 01:54:57,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa3468f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:57, skipping insertion in model container [2021-10-16 01:54:57,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:57" (3/3) ... [2021-10-16 01:54:57,680 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2021-10-16 01:54:57,686 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-16 01:54:57,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:57,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:54:57,687 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-16 01:54:57,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,748 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,751 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,757 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,758 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,760 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,760 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,761 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,763 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,763 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,763 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,764 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,764 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,765 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,765 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,766 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,766 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,766 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,767 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,767 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,767 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,768 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,768 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,769 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,770 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,771 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,773 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,774 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,774 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,774 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,775 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,776 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,776 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,776 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,780 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,791 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,793 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,793 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,793 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,793 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,794 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,798 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,798 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,801 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,802 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,803 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-16 01:54:57,810 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-16 01:54:57,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:57,862 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 01:54:57,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-16 01:54:57,878 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-16 01:54:57,889 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 204 transitions, 440 flow [2021-10-16 01:54:57,892 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 204 transitions, 440 flow [2021-10-16 01:54:57,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 204 transitions, 440 flow [2021-10-16 01:54:57,984 INFO L129 PetriNetUnfolder]: 19/200 cut-off events. [2021-10-16 01:54:57,984 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-16 01:54:57,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 200 events. 19/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 166. Up to 2 conditions per place. [2021-10-16 01:54:57,993 INFO L116 LiptonReduction]: Number of co-enabled transitions 1224 [2021-10-16 01:55:22,638 WARN L207 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2021-10-16 01:55:31,968 WARN L207 SmtUtils]: Spent 7.74 s on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2021-10-16 01:55:33,275 INFO L131 LiptonReduction]: Checked pairs total: 2341 [2021-10-16 01:55:33,276 INFO L133 LiptonReduction]: Total number of compositions: 197 [2021-10-16 01:55:33,283 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 36 transitions, 104 flow [2021-10-16 01:55:33,318 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 01:55:33,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:33,341 INFO L512 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] [2021-10-16 01:55:33,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 01:55:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash 287251475, now seen corresponding path program 1 times [2021-10-16 01:55:33,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:33,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892128032] [2021-10-16 01:55:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:33,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:33,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:33,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:33,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:55:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:33,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:33,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:33,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:33,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:33,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892128032] [2021-10-16 01:55:33,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892128032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:33,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:33,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 01:55:33,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971554242] [2021-10-16 01:55:33,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:33,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:33,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:33,976 INFO L87 Difference]: Start difference. First operand has 174 states, 173 states have (on average 3.8728323699421967) internal successors, (670), 173 states have internal predecessors, (670), 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 6 states, 6 states have (on average 4.666666666666667) 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) [2021-10-16 01:55:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:34,069 INFO L93 Difference]: Finished difference Result 212 states and 826 transitions. [2021-10-16 01:55:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:55:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) 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 23 [2021-10-16 01:55:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:34,086 INFO L225 Difference]: With dead ends: 212 [2021-10-16 01:55:34,086 INFO L226 Difference]: Without dead ends: 212 [2021-10-16 01:55:34,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-16 01:55:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-16 01:55:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.914691943127962) internal successors, (826), 211 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 826 transitions. [2021-10-16 01:55:34,159 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 826 transitions. Word has length 23 [2021-10-16 01:55:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:34,159 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 826 transitions. [2021-10-16 01:55:34,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) 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) [2021-10-16 01:55:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 826 transitions. [2021-10-16 01:55:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:55:34,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:34,166 INFO L512 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] [2021-10-16 01:55:34,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:34,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:34,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 01:55:34,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:34,383 INFO L82 PathProgramCache]: Analyzing trace with hash -562099075, now seen corresponding path program 1 times [2021-10-16 01:55:34,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:34,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772417376] [2021-10-16 01:55:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:34,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:34,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:34,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:55:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:34,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 01:55:34,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:34,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:34,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:34,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772417376] [2021-10-16 01:55:34,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772417376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:34,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:34,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 01:55:34,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601532641] [2021-10-16 01:55:34,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:34,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:34,812 INFO L87 Difference]: Start difference. First operand 212 states and 826 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) 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) [2021-10-16 01:55:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:34,953 INFO L93 Difference]: Finished difference Result 253 states and 933 transitions. [2021-10-16 01:55:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:55:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) 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 24 [2021-10-16 01:55:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:34,959 INFO L225 Difference]: With dead ends: 253 [2021-10-16 01:55:34,960 INFO L226 Difference]: Without dead ends: 213 [2021-10-16 01:55:34,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-16 01:55:34,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-10-16 01:55:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 3.900943396226415) internal successors, (827), 212 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 827 transitions. [2021-10-16 01:55:34,980 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 827 transitions. Word has length 24 [2021-10-16 01:55:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:34,981 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 827 transitions. [2021-10-16 01:55:34,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) 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) [2021-10-16 01:55:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 827 transitions. [2021-10-16 01:55:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 01:55:34,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:34,984 INFO L512 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] [2021-10-16 01:55:35,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:35,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:35,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 01:55:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:35,196 INFO L82 PathProgramCache]: Analyzing trace with hash 93845271, now seen corresponding path program 1 times [2021-10-16 01:55:35,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:35,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481594600] [2021-10-16 01:55:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:35,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:35,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:35,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:35,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:55:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:35,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 01:55:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:35,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 01:55:36,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:36,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481594600] [2021-10-16 01:55:36,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481594600] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 01:55:36,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 01:55:36,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-10-16 01:55:36,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242775357] [2021-10-16 01:55:36,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:55:36,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:55:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:55:36,016 INFO L87 Difference]: Start difference. First operand 213 states and 827 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:36,205 INFO L93 Difference]: Finished difference Result 371 states and 1409 transitions. [2021-10-16 01:55:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:55:36,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 [2021-10-16 01:55:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:36,213 INFO L225 Difference]: With dead ends: 371 [2021-10-16 01:55:36,214 INFO L226 Difference]: Without dead ends: 371 [2021-10-16 01:55:36,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:55:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-16 01:55:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 263. [2021-10-16 01:55:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.9427480916030535) internal successors, (1033), 262 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 1033 transitions. [2021-10-16 01:55:36,259 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 1033 transitions. Word has length 25 [2021-10-16 01:55:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:36,260 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 1033 transitions. [2021-10-16 01:55:36,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 1033 transitions. [2021-10-16 01:55:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 01:55:36,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:36,269 INFO L512 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] [2021-10-16 01:55:36,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 01:55:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:36,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-16 01:55:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1609146373, now seen corresponding path program 1 times [2021-10-16 01:55:36,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:36,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088828721] [2021-10-16 01:55:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:36,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:36,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:36,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:55:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:36,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 01:55:36,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:36,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 65 [2021-10-16 01:55:37,310 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-16 01:55:37,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-16 01:58:55,263 WARN L207 SmtUtils]: Spent 3.22 m on a formula simplification. DAG size of input: 375 DAG size of output: 130 [2021-10-16 01:58:55,265 INFO L354 Elim1Store]: treesize reduction 2036, result has 18.2 percent of original size [2021-10-16 01:58:55,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 126 treesize of output 502 [2021-10-16 02:04:32,228 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:04:32,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:04:32,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088828721] [2021-10-16 02:04:32,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 02:04:32,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343514054] [2021-10-16 02:04:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:32,233 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:04:32,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 02:04:32,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:04:32,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:04:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:33,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-16 02:04:33,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:33,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:04:33,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924092624] [2021-10-16 02:04:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:04:33,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:04:33,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:04:33,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:04:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:04:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:04:33,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 02:04:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:04:33,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:04:33,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:04:33,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:04:33,453 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:04:33,453 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:04:33,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:04:33,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-16 02:04:33,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-16 02:04:33,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-16 02:04:33,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-16 02:04:33,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:33,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:33,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:04:34,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ec16ada-11fd-4446-8e47-16c3c32a5f5a/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:04:34,085 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-16 02:04:34,085 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:04:34,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:04:34 BasicIcfg [2021-10-16 02:04:34,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:04:34,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:04:34,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:04:34,128 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:04:34,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:57" (3/4) ... [2021-10-16 02:04:34,132 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:04:34,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:04:34,134 INFO L168 Benchmark]: Toolchain (without parser) took 579178.17 ms. Allocated memory was 71.3 MB in the beginning and 107.0 MB in the end (delta: 35.7 MB). Free memory was 52.1 MB in the beginning and 68.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,135 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 71.3 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:04:34,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.17 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 50.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.11 ms. Allocated memory is still 71.3 MB. Free memory was 50.7 MB in the beginning and 47.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,147 INFO L168 Benchmark]: Boogie Preprocessor took 85.39 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,149 INFO L168 Benchmark]: RCFGBuilder took 1941.22 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 45.8 MB in the beginning and 56.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,150 INFO L168 Benchmark]: TraceAbstraction took 576455.45 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 55.4 MB in the beginning and 69.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,151 INFO L168 Benchmark]: Witness Printer took 7.05 ms. Allocated memory is still 107.0 MB. Free memory was 69.8 MB in the beginning and 68.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:04:34,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 71.3 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.17 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 50.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.11 ms. Allocated memory is still 71.3 MB. Free memory was 50.7 MB in the beginning and 47.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.39 ms. Allocated memory is still 71.3 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1941.22 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 45.8 MB in the beginning and 56.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 576455.45 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 55.4 MB in the beginning and 69.8 MB in the end (delta: -14.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.05 ms. Allocated memory is still 107.0 MB. Free memory was 69.8 MB in the beginning and 68.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35383.5ms, 198 PlacesBefore, 43 PlacesAfterwards, 204 TransitionsBefore, 36 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 7 FixpointIterations, 128 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 197 TotalNumberOfCompositions, 2341 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1879, positive: 1803, positive conditional: 0, positive unconditional: 1803, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 904, positive: 888, positive conditional: 0, positive unconditional: 888, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 904, positive: 886, positive conditional: 0, positive unconditional: 886, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 729, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 717, negative conditional: 0, negative unconditional: 717, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1879, positive: 915, positive conditional: 0, positive unconditional: 915, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 904, unknown conditional: 0, unknown unconditional: 904] , Statistics on independence cache: Total cache size (in pairs): 123, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 128]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L40] 0 int* q1; [L41] 0 int* q2; [L42] 0 int i, j, total, C, N, M, q1_front, q1_back, q2_front, q2_back, n1, n2; [L98] 0 pthread_t t1, t2, t3, t4; [L100] 0 C = __VERIFIER_nondet_int() [L101] 0 M = __VERIFIER_nondet_int() [L102] 0 N = __VERIFIER_nondet_int() [L104] 0 q1_front = __VERIFIER_nondet_int() [L105] 0 q1_back = __VERIFIER_nondet_int() [L106] 0 q2_front = __VERIFIER_nondet_int() [L107] 0 q2_back = __VERIFIER_nondet_int() [L109] 0 n1 = __VERIFIER_nondet_int() [L110] 0 n2 = __VERIFIER_nondet_int() [L37] COND TRUE 0 !cond [L37] COND FALSE 0 !(!cond) [L137] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L138] 0 int i = 0; [L138] COND TRUE 0 i < size [L139] 0 arr[i] = __VERIFIER_nondet_int() [L138] 0 i++ [L138] COND FALSE 0 !(i < size) [L141] 0 return arr; [L111] 0 q1 = create_fresh_int_array(n1) [L37] COND TRUE 0 !cond [L37] COND TRUE 0 !cond [L137] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L138] 0 int i = 0; [L138] COND FALSE 0 !(i < size) [L141] 0 return arr; [L112] 0 q2 = create_fresh_int_array(n2) [L37] COND TRUE 0 !cond [L37] COND TRUE 0 !cond [L118] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L48] COND TRUE 1 i < N [L50] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L50] EXPR 1 q1[q1_back] [L50] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L37] COND FALSE 1 !(!cond) [L37] COND TRUE 1 !cond [L52] 1 q1_back++ [L53] 1 i++ [L48] COND FALSE 1 !(i < N) [L57] 1 return 0; [L119] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L70] 2 return 0; [L120] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L121] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L122] 0 \read(t1) [L122] FCALL, JOIN 1 pthread_join(t1, 0) [L94] 4 return 0; [L123] 0 \read(t2) [L123] FCALL, JOIN 2 pthread_join(t2, 0) [L124] 0 \read(t3) [L74] COND TRUE 3 i < N || q1_front < q1_back [L37] COND FALSE 3 !(!cond) [L77] EXPR 3 q1[q1_front] [L37] COND TRUE 3 !cond [L37] COND TRUE 3 !cond [L147] 3 return a + b; [L77] 3 total = plus(total, q1[q1_front]) [L78] 3 q1_front++ [L82] 3 return 0; [L124] FCALL, JOIN 3 pthread_join(t3, 0) [L125] 0 \read(t4) [L125] FCALL, JOIN 4 pthread_join(t4, 0) [L37] COND FALSE 0 !(!cond) [L128] 0 reach_error() - UnprovableResult [Line: 120]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 121]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 210 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 576229.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 39.1ms, AutomataDifference: 484.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35456.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 88 SDslu, 199 SDs, 0 SdLazy, 52 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 327.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 216.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 122.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 108 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 87.9ms SsaConstructionTime, 271.3ms SatisfiabilityAnalysisTime, 1228.8ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 41 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...