./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:17:35,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:17:35,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:17:36,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:17:36,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:17:36,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:17:36,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:17:36,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:17:36,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:17:36,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:17:36,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:17:36,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:17:36,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:17:36,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:17:36,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:17:36,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:17:36,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:17:36,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:17:36,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:17:36,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:17:36,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:17:36,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:17:36,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:17:36,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:17:36,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:17:36,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:17:36,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:17:36,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:17:36,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:17:36,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:17:36,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:17:36,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:17:36,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:17:36,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:17:36,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:17:36,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:17:36,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:17:36,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:17:36,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:17:36,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:17:36,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:17:36,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:17:36,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:17:36,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:17:36,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:17:36,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:17:36,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:17:36,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:17:36,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:17:36,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:17:36,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:17:36,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:17:36,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:17:36,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:17:36,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:17:36,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:17:36,140 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:17:36,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:17:36,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:17:36,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:17:36,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:17:36,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:17:36,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:17:36,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:17:36,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:17:36,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:17:36,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:17:36,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:17:36,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:17:36,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:17:36,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:17:36,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:17:36,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:36,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:17:36,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:17:36,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:17:36,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:17:36,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:17:36,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:17:36,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:17:36,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:17:36,152 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_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2021-11-07 01:17:36,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:17:36,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:17:36,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:17:36,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:17:36,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:17:36,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-11-07 01:17:36,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/1e3db7ed5/648f2c4467be48cabd96af482b093e91/FLAGb33936324 [2021-11-07 01:17:37,212 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:37,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-11-07 01:17:37,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/1e3db7ed5/648f2c4467be48cabd96af482b093e91/FLAGb33936324 [2021-11-07 01:17:37,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/1e3db7ed5/648f2c4467be48cabd96af482b093e91 [2021-11-07 01:17:37,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:37,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:37,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:37,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:37,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:37,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:37" (1/1) ... [2021-11-07 01:17:37,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df86f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:37, skipping insertion in model container [2021-11-07 01:17:37,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:37" (1/1) ... [2021-11-07 01:17:37,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:37,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:37,823 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_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2021-11-07 01:17:37,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:37,848 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:17:37,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71c04856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:37, skipping insertion in model container [2021-11-07 01:17:37,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:37,850 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:17:37,853 INFO L168 Benchmark]: Toolchain (without parser) took 329.05 ms. Allocated memory is still 88.1 MB. Free memory was 49.4 MB in the beginning and 65.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:37,854 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:17:37,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 65.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:17:37,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 65.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 163]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:17:40,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:17:40,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:17:40,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:17:40,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:17:40,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:17:40,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:17:40,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:17:40,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:17:40,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:17:40,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:17:40,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:17:40,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:17:40,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:17:40,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:17:40,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:17:40,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:17:40,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:17:40,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:17:40,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:17:40,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:17:40,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:17:40,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:17:40,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:17:40,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:17:40,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:17:40,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:17:40,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:17:40,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:17:40,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:17:40,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:17:40,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:17:40,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:17:40,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:17:40,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:17:40,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:17:40,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:17:40,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:17:40,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:17:40,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:17:40,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:17:40,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:17:40,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:17:40,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:17:40,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:17:40,937 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:17:40,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:17:40,938 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:17:40,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:17:40,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:17:40,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:17:40,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:17:40,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:17:40,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:17:40,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:17:40,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:17:40,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:17:40,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:17:40,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:17:40,949 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:17:40,950 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:17:40,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:17:40,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:17:40,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:17:40,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:17:40,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:17:40,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:17:40,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:17:40,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:40,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:17:40,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:17:40,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:17:40,954 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:17:40,954 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:40,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:17:40,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:17:40,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:17:40,956 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_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2021-11-07 01:17:41,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:17:41,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:17:41,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:17:41,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:17:41,498 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:17:41,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-11-07 01:17:41,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/c3561c9c2/495d682878a64c31ae1969d4a4ab7aee/FLAG1a1e7ff6b [2021-11-07 01:17:42,317 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:42,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2021-11-07 01:17:42,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/c3561c9c2/495d682878a64c31ae1969d4a4ab7aee/FLAG1a1e7ff6b [2021-11-07 01:17:42,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/data/c3561c9c2/495d682878a64c31ae1969d4a4ab7aee [2021-11-07 01:17:42,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:42,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:42,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:42,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:42,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:42,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:42" (1/1) ... [2021-11-07 01:17:42,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48713f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:42, skipping insertion in model container [2021-11-07 01:17:42,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:42" (1/1) ... [2021-11-07 01:17:42,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:42,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:43,023 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_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2021-11-07 01:17:43,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:43,055 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:17:43,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:43,110 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_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2021-11-07 01:17:43,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:43,150 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:17:43,189 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_ee55c806-5809-496d-ac73-c792a4117993/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2021-11-07 01:17:43,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:43,220 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:17:43,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43 WrapperNode [2021-11-07 01:17:43,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:43,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:43,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:17:43,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:17:43,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:43,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:17:43,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:17:43,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:17:43,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:17:43,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:17:43,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:17:43,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:17:43,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (1/1) ... [2021-11-07 01:17:43,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:43,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:17:43,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:17:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:17:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:17:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:17:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:17:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:17:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:17:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:17:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:17:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:17:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 01:17:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 01:17:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:17:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:17:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:17:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:17:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:17:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:17:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:17:43,555 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:17:45,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:17:45,555 INFO L299 CfgBuilder]: Removed 48 assume(true) statements. [2021-11-07 01:17:45,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:45 BoogieIcfgContainer [2021-11-07 01:17:45,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:17:45,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:17:45,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:17:45,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:17:45,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:42" (1/3) ... [2021-11-07 01:17:45,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddeeb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:45, skipping insertion in model container [2021-11-07 01:17:45,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:43" (2/3) ... [2021-11-07 01:17:45,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddeeb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:45, skipping insertion in model container [2021-11-07 01:17:45,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:45" (3/3) ... [2021-11-07 01:17:45,582 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2021-11-07 01:17:45,589 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:17:45,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:17:45,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:17:45,589 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:17:45,658 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,680 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,681 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,681 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,681 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,681 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,685 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,689 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,691 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,692 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,692 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,693 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,694 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,694 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,694 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,694 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,695 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,695 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,696 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,697 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,697 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,698 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,699 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,699 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,707 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,708 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,708 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,708 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,709 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,710 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,710 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,710 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,710 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,710 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,711 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,712 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,713 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,714 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,715 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,715 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,715 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,715 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,715 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,716 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,716 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,716 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,717 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,718 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,718 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,718 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,719 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,720 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,720 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,724 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,724 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,725 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,725 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,725 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,725 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,726 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,726 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,727 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,730 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,731 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,731 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,732 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,732 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,734 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,734 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~cond~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,735 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,735 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,736 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,736 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,736 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,737 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,737 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~short8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,740 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,741 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:17:45,765 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-07 01:17:45,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:17:45,828 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:17:45,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:17:45,849 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:17:45,863 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 214 transitions, 460 flow [2021-11-07 01:17:45,866 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 214 transitions, 460 flow [2021-11-07 01:17:45,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 214 transitions, 460 flow [2021-11-07 01:17:45,985 INFO L129 PetriNetUnfolder]: 19/210 cut-off events. [2021-11-07 01:17:45,986 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-07 01:17:45,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 210 events. 19/210 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 174. Up to 2 conditions per place. [2021-11-07 01:17:45,998 INFO L116 LiptonReduction]: Number of co-enabled transitions 2000 [2021-11-07 01:18:16,290 WARN L207 SmtUtils]: Spent 7.88 s on a formula simplification. DAG size of input: 168 DAG size of output: 167 [2021-11-07 01:18:25,745 WARN L207 SmtUtils]: Spent 7.91 s on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2021-11-07 01:18:27,269 INFO L131 LiptonReduction]: Checked pairs total: 3983 [2021-11-07 01:18:27,269 INFO L133 LiptonReduction]: Total number of compositions: 201 [2021-11-07 01:18:27,296 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 42 transitions, 116 flow [2021-11-07 01:18:27,433 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:18:27,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:27,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:27,489 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)] === [2021-11-07 01:18:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -484194971, now seen corresponding path program 1 times [2021-11-07 01:18:27,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:27,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104009419] [2021-11-07 01:18:27,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:27,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:27,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:27,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:18:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:27,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:27,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:28,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:28,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:28,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104009419] [2021-11-07 01:18:28,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104009419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:28,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:28,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:18:28,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989240815] [2021-11-07 01:18:28,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:28,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:28,462 INFO L87 Difference]: Start difference. First operand has 854 states, 853 states have (on average 4.173505275498242) internal successors, (3560), 853 states have internal predecessors, (3560), 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 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:28,691 INFO L93 Difference]: Finished difference Result 1194 states and 5024 transitions. [2021-11-07 01:18:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:18:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:18:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:28,755 INFO L225 Difference]: With dead ends: 1194 [2021-11-07 01:18:28,755 INFO L226 Difference]: Without dead ends: 1194 [2021-11-07 01:18:28,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:18:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-07 01:18:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1024. [2021-11-07 01:18:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1023 states have (on average 4.195503421309873) internal successors, (4292), 1023 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 4292 transitions. [2021-11-07 01:18:28,931 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 4292 transitions. Word has length 27 [2021-11-07 01:18:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:28,933 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 4292 transitions. [2021-11-07 01:18:28,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 4292 transitions. [2021-11-07 01:18:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:18:28,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:28,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:28,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:29,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:29,159 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)] === [2021-11-07 01:18:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash 874828405, now seen corresponding path program 1 times [2021-11-07 01:18:29,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:29,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123514656] [2021-11-07 01:18:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:29,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:29,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:18:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:29,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:18:29,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:29,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:29,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:29,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123514656] [2021-11-07 01:18:29,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123514656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:29,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:29,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:18:29,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608270168] [2021-11-07 01:18:29,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:18:29,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:18:29,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:18:29,784 INFO L87 Difference]: Start difference. First operand 1024 states and 4292 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:30,223 INFO L93 Difference]: Finished difference Result 1344 states and 5652 transitions. [2021-11-07 01:18:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:18:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:18:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:30,275 INFO L225 Difference]: With dead ends: 1344 [2021-11-07 01:18:30,276 INFO L226 Difference]: Without dead ends: 1344 [2021-11-07 01:18:30,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-11-07 01:18:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1184. [2021-11-07 01:18:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 4.202874049027895) internal successors, (4972), 1183 states have internal predecessors, (4972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 4972 transitions. [2021-11-07 01:18:30,356 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 4972 transitions. Word has length 29 [2021-11-07 01:18:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:30,358 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 4972 transitions. [2021-11-07 01:18:30,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 4972 transitions. [2021-11-07 01:18:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:18:30,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:30,369 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:30,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:30,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:30,589 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)] === [2021-11-07 01:18:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1851033205, now seen corresponding path program 2 times [2021-11-07 01:18:30,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:30,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006944734] [2021-11-07 01:18:30,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:18:30,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:30,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:30,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:30,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:18:30,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:18:30,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:30,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:18:30,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:31,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:31,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:31,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006944734] [2021-11-07 01:18:31,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006944734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:31,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:31,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:18:31,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478312072] [2021-11-07 01:18:31,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:18:31,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:18:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:18:31,316 INFO L87 Difference]: Start difference. First operand 1184 states and 4972 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:31,511 INFO L93 Difference]: Finished difference Result 1447 states and 5879 transitions. [2021-11-07 01:18:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:18:31,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 01:18:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:31,534 INFO L225 Difference]: With dead ends: 1447 [2021-11-07 01:18:31,534 INFO L226 Difference]: Without dead ends: 1185 [2021-11-07 01:18:31,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:18:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-07 01:18:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2021-11-07 01:18:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1184 states have (on average 4.200168918918919) internal successors, (4973), 1184 states have internal predecessors, (4973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 4973 transitions. [2021-11-07 01:18:31,643 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 4973 transitions. Word has length 29 [2021-11-07 01:18:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:31,644 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 4973 transitions. [2021-11-07 01:18:31,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 4973 transitions. [2021-11-07 01:18:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:18:31,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:31,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:31,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:31,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:31,870 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)] === [2021-11-07 01:18:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1701846502, now seen corresponding path program 1 times [2021-11-07 01:18:31,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:31,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490278624] [2021-11-07 01:18:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:31,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:31,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:31,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:31,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:18:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:32,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:18:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:33,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:18:33,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:33,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490278624] [2021-11-07 01:18:33,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490278624] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:18:33,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:18:33,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-07 01:18:33,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670368106] [2021-11-07 01:18:33,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:18:33,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:18:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:33,427 INFO L87 Difference]: Start difference. First operand 1185 states and 4973 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:33,803 INFO L93 Difference]: Finished difference Result 2075 states and 8719 transitions. [2021-11-07 01:18:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:18:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2021-11-07 01:18:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:33,834 INFO L225 Difference]: With dead ends: 2075 [2021-11-07 01:18:33,834 INFO L226 Difference]: Without dead ends: 2075 [2021-11-07 01:18:33,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:18:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-11-07 01:18:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1345. [2021-11-07 01:18:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 4.206101190476191) internal successors, (5653), 1344 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 5653 transitions. [2021-11-07 01:18:33,967 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 5653 transitions. Word has length 30 [2021-11-07 01:18:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:33,967 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 5653 transitions. [2021-11-07 01:18:33,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 5653 transitions. [2021-11-07 01:18:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:18:33,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:33,976 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:33,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:34,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:34,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 01:18:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:34,196 INFO L85 PathProgramCache]: Analyzing trace with hash -168450080, now seen corresponding path program 2 times [2021-11-07 01:18:34,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:34,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707426215] [2021-11-07 01:18:34,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:18:34,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:34,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:34,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:18:34,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:18:34,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:34,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:18:34,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:18:35,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:18:35,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:35,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707426215] [2021-11-07 01:18:35,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707426215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:35,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:35,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:18:35,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010278511] [2021-11-07 01:18:35,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:35,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:35,227 INFO L87 Difference]: Start difference. First operand 1345 states and 5653 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:35,809 INFO L93 Difference]: Finished difference Result 2765 states and 11433 transitions. [2021-11-07 01:18:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:18:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 30 [2021-11-07 01:18:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:35,852 INFO L225 Difference]: With dead ends: 2765 [2021-11-07 01:18:35,853 INFO L226 Difference]: Without dead ends: 2765 [2021-11-07 01:18:35,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2021-11-07 01:18:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 1425. [2021-11-07 01:18:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 4.30126404494382) internal successors, (6125), 1424 states have internal predecessors, (6125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 6125 transitions. [2021-11-07 01:18:35,993 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 6125 transitions. Word has length 30 [2021-11-07 01:18:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:35,993 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 6125 transitions. [2021-11-07 01:18:35,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 6125 transitions. [2021-11-07 01:18:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:18:36,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:36,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:36,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:18:36,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:36,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 01:18:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 808929780, now seen corresponding path program 3 times [2021-11-07 01:18:36,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:36,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903765639] [2021-11-07 01:18:36,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:18:36,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:36,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:36,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:36,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:18:36,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:18:36,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:36,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:18:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:18:36,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:18:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:18:37,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:18:37,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903765639] [2021-11-07 01:18:37,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903765639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:37,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:37,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:18:37,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328755316] [2021-11-07 01:18:37,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:37,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:18:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:37,069 INFO L87 Difference]: Start difference. First operand 1425 states and 6125 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:37,483 INFO L93 Difference]: Finished difference Result 2075 states and 8593 transitions. [2021-11-07 01:18:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:18:37,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 30 [2021-11-07 01:18:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:37,514 INFO L225 Difference]: With dead ends: 2075 [2021-11-07 01:18:37,514 INFO L226 Difference]: Without dead ends: 2075 [2021-11-07 01:18:37,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:18:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-11-07 01:18:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1145. [2021-11-07 01:18:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1144 states have (on average 4.0673076923076925) internal successors, (4653), 1144 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 4653 transitions. [2021-11-07 01:18:37,635 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 4653 transitions. Word has length 30 [2021-11-07 01:18:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:37,635 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 4653 transitions. [2021-11-07 01:18:37,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 4653 transitions. [2021-11-07 01:18:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:18:37,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:37,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:18:37,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:18:37,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:18:37,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-07 01:18:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -733744224, now seen corresponding path program 1 times [2021-11-07 01:18:37,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:18:37,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347854170] [2021-11-07 01:18:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:37,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:18:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:18:37,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:18:37,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:18:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:38,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 01:18:38,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:38,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:18:38,875 INFO L354 Elim1Store]: treesize reduction 389, result has 14.7 percent of original size [2021-11-07 01:18:38,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 51 treesize of output 93 [2021-11-07 01:18:40,936 INFO L354 Elim1Store]: treesize reduction 166, result has 37.4 percent of original size [2021-11-07 01:18:40,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 95 treesize of output 175 [2021-11-07 01:18:43,081 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-07 01:18:43,082 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 63 treesize of output 71 [2021-11-07 01:22:01,947 WARN L207 SmtUtils]: Spent 3.27 m on a formula simplification. DAG size of input: 375 DAG size of output: 130 [2021-11-07 01:22:01,949 INFO L354 Elim1Store]: treesize reduction 2036, result has 18.2 percent of original size [2021-11-07 01:22:01,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 145 treesize of output 521 [2021-11-07 01:29:31,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 01:29:31,715 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 01:29:31,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:31,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347854170] [2021-11-07 01:29:31,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 01:29:31,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [202589403] [2021-11-07 01:29:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:31,721 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:31,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:31,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:31,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:29:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:32,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 01:29:32,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:32,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:29:32,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652649378] [2021-11-07 01:29:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:32,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:29:32,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:32,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:29:32,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:29:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:33,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:29:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:33,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:29:33,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:33,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 01:29:33,171 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 01:29:33,171 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 01:29:33,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:29:33,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 01:29:33,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 01:29:33,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-07 01:29:33,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-11-07 01:29:33,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:33,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:33,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee55c806-5809-496d-ac73-c792a4117993/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:33,780 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2021-11-07 01:29:33,782 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 01:29:33,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:29:33,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:29:33 BasicIcfg [2021-11-07 01:29:33,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:29:33,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:29:33,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:29:33,807 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:29:33,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:45" (3/4) ... [2021-11-07 01:29:33,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:29:33,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:29:33,811 INFO L168 Benchmark]: Toolchain (without parser) took 711144.72 ms. Allocated memory was 52.4 MB in the beginning and 228.6 MB in the end (delta: 176.2 MB). Free memory was 28.9 MB in the beginning and 153.1 MB in the end (delta: -124.1 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,811 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:33,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.99 ms. Allocated memory is still 52.4 MB. Free memory was 28.7 MB in the beginning and 27.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.81 ms. Allocated memory is still 52.4 MB. Free memory was 27.0 MB in the beginning and 24.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,812 INFO L168 Benchmark]: Boogie Preprocessor took 99.33 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 45.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,813 INFO L168 Benchmark]: RCFGBuilder took 2116.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 30.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,813 INFO L168 Benchmark]: TraceAbstraction took 708245.19 ms. Allocated memory was 62.9 MB in the beginning and 228.6 MB in the end (delta: 165.7 MB). Free memory was 30.2 MB in the beginning and 153.1 MB in the end (delta: -122.9 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:33,814 INFO L168 Benchmark]: Witness Printer took 3.68 ms. Allocated memory is still 228.6 MB. Free memory is still 153.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:33,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.99 ms. Allocated memory is still 52.4 MB. Free memory was 28.7 MB in the beginning and 27.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.81 ms. Allocated memory is still 52.4 MB. Free memory was 27.0 MB in the beginning and 24.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.33 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 45.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2116.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 30.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 708245.19 ms. Allocated memory was 62.9 MB in the beginning and 228.6 MB in the end (delta: 165.7 MB). Free memory was 30.2 MB in the beginning and 153.1 MB in the end (delta: -122.9 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.68 ms. Allocated memory is still 228.6 MB. Free memory is still 153.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.4s, 208 PlacesBefore, 49 PlacesAfterwards, 214 TransitionsBefore, 42 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 8 FixpointIterations, 133 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 201 TotalNumberOfCompositions, 3983 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2880, positive: 2772, positive conditional: 0, positive unconditional: 2772, negative: 108, negative conditional: 0, negative unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1273, positive: 1255, positive conditional: 0, positive unconditional: 1255, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1273, positive: 1255, positive conditional: 0, positive unconditional: 1255, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 747, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 747, negative conditional: 0, negative unconditional: 747, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2880, positive: 1517, positive conditional: 0, positive unconditional: 1517, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 1273, unknown conditional: 0, unknown unconditional: 1273] , Statistics on independence cache: Total cache size (in pairs): 185, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 154]: 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; [L124] 0 pthread_t t1, t2, t3, t4; [L126] 0 C = __VERIFIER_nondet_int() [L127] 0 M = __VERIFIER_nondet_int() [L128] 0 N = __VERIFIER_nondet_int() [L130] 0 q1_front = __VERIFIER_nondet_int() [L131] 0 q1_back = __VERIFIER_nondet_int() [L132] 0 q2_front = __VERIFIER_nondet_int() [L133] 0 q2_back = __VERIFIER_nondet_int() [L135] 0 n1 = __VERIFIER_nondet_int() [L136] 0 n2 = __VERIFIER_nondet_int() [L37] COND TRUE 0 !cond [L37] COND FALSE 0 !(!cond) [L163] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L164] 0 int i = 0; [L164] COND TRUE 0 i < size [L165] 0 arr[i] = __VERIFIER_nondet_int() [L164] 0 i++ [L167] 0 return arr; [L137] 0 q1 = create_fresh_int_array(n1) [L37] COND TRUE 0 !cond [L37] COND FALSE 0 !(!cond) [L163] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L164] 0 int i = 0; [L167] 0 return arr; [L138] 0 q2 = create_fresh_int_array(n2) [L37] COND TRUE 0 !cond [L37] COND TRUE 0 !cond [L144] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L49] 1 _Bool cond = i < N; [L51] COND TRUE 1 \read(cond) [L53] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L53] EXPR 1 q1[q1_back] [L53] 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L37] COND TRUE 1 !cond [L54] 1 q1_back++ [L145] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L146] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L89] 3 _Bool cond = i < N || q1_front < q1_back; [L91] COND TRUE 3 \read(cond) [L37] COND FALSE 3 !(!cond) [L94] EXPR 3 q1[q1_front] [L37] COND TRUE 3 !cond [L37] COND TRUE 3 !cond [L173] 3 return a + b; [L94] 3 total = plus(total, q1[q1_front]) [L95] 3 q1_front++ [L147] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L148] 0 \read(t1) [L69] 2 _Bool cond = j < M; [L84] 2 return 0; [L107] 4 _Bool cond = j < M || q2_front < q2_back; [L109] COND FALSE 4 !(\read(cond)) [L120] 4 return 0; [L57] 1 i++ [L60] 1 cond = i < N [L51] COND FALSE 1 !(\read(cond)) [L64] 1 return 0; [L98] 3 cond = i < N || q1_front < q1_back [L91] COND FALSE 3 !(\read(cond)) [L102] 3 return 0; [L148] FCALL, JOIN 1 pthread_join(t1, 0) [L149] 0 \read(t2) [L149] FCALL, JOIN 2 pthread_join(t2, 0) [L150] 0 \read(t3) [L150] FCALL, JOIN 3 pthread_join(t3, 0) [L151] 0 \read(t4) [L151] FCALL, JOIN 4 pthread_join(t4, 0) [L37] COND FALSE 0 !(!cond) [L154] 0 reach_error() - UnprovableResult [Line: 144]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 145]: 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: 146]: 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: 147]: 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, 230 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 707.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 41.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 402 SDtfs, 725 SDslu, 1007 SDs, 0 SdLazy, 245 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1425occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 3330 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 657.1s InterpolantComputationTime, 207 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 1106 SizeOfPredicates, 72 NumberOfNonLiveVariables, 973 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 14/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN