./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF --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 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:30:06,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:30:06,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:30:06,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:30:06,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:30:06,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:30:06,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:30:06,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:30:06,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:30:06,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:30:06,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:30:06,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:30:06,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:30:06,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:30:06,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:30:06,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:30:06,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:30:06,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:30:06,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:30:06,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:30:06,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:30:06,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:30:06,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:30:06,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:30:06,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:30:06,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:30:06,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:30:06,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:30:06,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:30:06,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:30:06,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:30:06,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:30:06,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:30:06,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:30:06,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:30:06,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:30:06,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:30:06,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:30:06,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:30:06,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:30:06,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:30:06,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:30:06,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:30:06,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:30:06,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:30:06,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:30:06,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:30:06,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:30:06,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:30:06,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:30:06,378 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:30:06,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:30:06,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:30:06,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:30:06,383 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:30:06,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:30:06,383 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:30:06,383 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:30:06,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:30:06,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:30:06,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:30:06,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:30:06,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:30:06,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:30:06,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:30:06,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:30:06,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:30:06,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:30:06,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:30:06,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:30:06,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:30:06,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:30:06,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:30:06,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:30:06,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:30:06,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:30:06,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:30:06,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:30:06,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:30:06,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:30:06,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:30:06,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:30:06,389 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df [2021-11-12 23:30:06,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:30:06,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:30:06,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:30:06,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:30:06,756 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:30:06,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-11-12 23:30:06,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/de60b7fd0/2eb34d87e9de42f2af4efcd7b5af7255/FLAGec20d2e2f [2021-11-12 23:30:07,297 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:30:07,298 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-11-12 23:30:07,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/de60b7fd0/2eb34d87e9de42f2af4efcd7b5af7255/FLAGec20d2e2f [2021-11-12 23:30:07,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/de60b7fd0/2eb34d87e9de42f2af4efcd7b5af7255 [2021-11-12 23:30:07,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:30:07,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:30:07,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:30:07,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:30:07,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:30:07,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:30:07" (1/1) ... [2021-11-12 23:30:07,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550baae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:07, skipping insertion in model container [2021-11-12 23:30:07,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:30:07" (1/1) ... [2021-11-12 23:30:07,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:30:07,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:30:07,941 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2021-11-12 23:30:07,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:30:07,959 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) [2021-11-12 23:30:07,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20d849ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:07, skipping insertion in model container [2021-11-12 23:30:07,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:30:07,960 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:30:07,962 INFO L158 Benchmark]: Toolchain (without parser) took 255.81ms. Allocated memory is still 102.8MB. Free memory was 69.0MB in the beginning and 77.9MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:30:07,963 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 54.1MB in the beginning and 54.0MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:30:07,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.10ms. Allocated memory is still 102.8MB. Free memory was 68.9MB in the beginning and 77.9MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:30:07,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 54.1MB in the beginning and 54.0MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.10ms. Allocated memory is still 102.8MB. Free memory was 68.9MB in the beginning and 77.9MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 107]: 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF --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 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:30:10,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:30:10,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:30:10,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:30:10,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:30:10,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:30:10,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:30:10,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:30:10,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:30:10,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:30:10,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:30:10,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:30:10,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:30:10,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:30:10,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:30:10,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:30:10,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:30:10,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:30:10,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:30:10,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:30:10,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:30:10,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:30:10,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:30:10,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:30:10,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:30:10,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:30:10,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:30:10,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:30:10,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:30:10,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:30:10,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:30:10,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:30:10,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:30:10,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:30:10,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:30:10,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:30:10,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:30:10,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:30:10,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:30:10,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:30:10,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:30:10,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:30:10,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:30:10,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:30:10,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:30:10,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:30:10,680 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:30:10,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:30:10,681 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:30:10,681 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:30:10,681 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:30:10,681 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:30:10,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:30:10,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:30:10,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:30:10,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:30:10,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:30:10,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:30:10,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:30:10,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:30:10,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:30:10,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:30:10,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:30:10,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:30:10,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:30:10,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:30:10,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:30:10,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:30:10,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:30:10,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:30:10,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:30:10,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:30:10,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:30:10,688 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:30:10,689 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:10,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:30:10,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:30:10,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:30:10,690 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df [2021-11-12 23:30:11,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:30:11,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:30:11,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:30:11,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:30:11,166 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:30:11,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-11-12 23:30:11,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/f1f73bf0e/24c32f48d9014f52b7f1a4f35ad20d5a/FLAGe420608b0 [2021-11-12 23:30:12,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:30:12,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-11-12 23:30:12,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/f1f73bf0e/24c32f48d9014f52b7f1a4f35ad20d5a/FLAGe420608b0 [2021-11-12 23:30:12,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/data/f1f73bf0e/24c32f48d9014f52b7f1a4f35ad20d5a [2021-11-12 23:30:12,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:30:12,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:30:12,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:30:12,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:30:12,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:30:12,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131cc52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12, skipping insertion in model container [2021-11-12 23:30:12,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:30:12,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:30:12,615 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2021-11-12 23:30:12,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:30:12,660 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:30:12,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:30:12,714 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2021-11-12 23:30:12,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:30:12,735 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:30:12,763 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_6cc117f7-b2a0-49ff-bf61-2609093a5477/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2021-11-12 23:30:12,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:30:12,786 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:30:12,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12 WrapperNode [2021-11-12 23:30:12,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:30:12,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:30:12,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:30:12,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:30:12,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:30:12,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:30:12,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:30:12,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:30:12,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:30:12,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:30:12,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:30:12,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:30:12,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (1/1) ... [2021-11-12 23:30:12,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:30:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:30:12,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:30:12,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:30:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 23:30:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 23:30:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 23:30:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 23:30:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:30:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:30:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 23:30:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 23:30:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:30:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:30:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:30:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:30:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:30:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:30:13,001 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:30:13,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:30:13,702 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:30:13,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:30:13 BoogieIcfgContainer [2021-11-12 23:30:13,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:30:13,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:30:13,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:30:13,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:30:13,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:30:12" (1/3) ... [2021-11-12 23:30:13,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc05e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:30:13, skipping insertion in model container [2021-11-12 23:30:13,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:30:12" (2/3) ... [2021-11-12 23:30:13,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc05e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:30:13, skipping insertion in model container [2021-11-12 23:30:13,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:30:13" (3/3) ... [2021-11-12 23:30:13,726 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2021-11-12 23:30:13,733 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 23:30:13,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:30:13,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:30:13,734 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:30:13,804 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,805 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,807 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,865 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:30:13,879 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-12 23:30:13,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:30:13,958 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 [2021-11-12 23:30:13,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:30:13,985 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:30:14,006 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 132 transitions, 280 flow [2021-11-12 23:30:14,010 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 132 transitions, 280 flow [2021-11-12 23:30:14,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 128 places, 132 transitions, 280 flow [2021-11-12 23:30:14,109 INFO L129 PetriNetUnfolder]: 11/130 cut-off events. [2021-11-12 23:30:14,110 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-12 23:30:14,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 11/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2021-11-12 23:30:14,122 INFO L116 LiptonReduction]: Number of co-enabled transitions 538 [2021-11-12 23:30:26,800 INFO L131 LiptonReduction]: Checked pairs total: 640 [2021-11-12 23:30:26,801 INFO L133 LiptonReduction]: Total number of compositions: 142 [2021-11-12 23:30:26,807 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions, 56 flow [2021-11-12 23:30:26,817 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:30:26,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:26,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:26,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 23:30:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1645904689, now seen corresponding path program 1 times [2021-11-12 23:30:26,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:26,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088078059] [2021-11-12 23:30:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:26,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:26,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:30:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:27,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:30:27,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:27,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:27,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088078059] [2021-11-12 23:30:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088078059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:30:27,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:30:27,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:30:27,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655477040] [2021-11-12 23:30:27,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:30:27,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:30:27,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:27,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:30:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:30:27,380 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-12 23:30:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:27,703 INFO L93 Difference]: Finished difference Result 49 states and 96 transitions. [2021-11-12 23:30:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:30:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 14 [2021-11-12 23:30:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:27,717 INFO L225 Difference]: With dead ends: 49 [2021-11-12 23:30:27,721 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 23:30:27,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:30:27,727 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:27,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 76 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 278.04ms Time] [2021-11-12 23:30:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 23:30:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-12 23:30:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 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) [2021-11-12 23:30:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 76 transitions. [2021-11-12 23:30:27,784 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 76 transitions. Word has length 14 [2021-11-12 23:30:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:27,785 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 76 transitions. [2021-11-12 23:30:27,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-12 23:30:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 76 transitions. [2021-11-12 23:30:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:30:27,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:27,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:27,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:28,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:30:28,002 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 23:30:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1441466890, now seen corresponding path program 1 times [2021-11-12 23:30:28,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:28,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210130627] [2021-11-12 23:30:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:28,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:28,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:28,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:30:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:28,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:30:28,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:30:28,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:30:28,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210130627] [2021-11-12 23:30:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210130627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:30:28,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:30:28,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:30:28,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060553603] [2021-11-12 23:30:28,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:30:28,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:30:28,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:30:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:30:28,572 INFO L87 Difference]: Start difference. First operand 36 states and 76 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:28,944 INFO L93 Difference]: Finished difference Result 77 states and 167 transitions. [2021-11-12 23:30:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:30:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 23:30:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:28,948 INFO L225 Difference]: With dead ends: 77 [2021-11-12 23:30:28,948 INFO L226 Difference]: Without dead ends: 72 [2021-11-12 23:30:28,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:30:28,950 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 275.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:28,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 13 Invalid, 114 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 340.61ms Time] [2021-11-12 23:30:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-12 23:30:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2021-11-12 23:30:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.2280701754385963) internal successors, (127), 57 states have internal predecessors, (127), 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) [2021-11-12 23:30:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 127 transitions. [2021-11-12 23:30:28,963 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 127 transitions. Word has length 15 [2021-11-12 23:30:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:28,964 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 127 transitions. [2021-11-12 23:30:28,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 127 transitions. [2021-11-12 23:30:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:30:28,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:28,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:28,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:29,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:30:29,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 23:30:29,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1734567111, now seen corresponding path program 1 times [2021-11-12 23:30:29,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:29,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236721060] [2021-11-12 23:30:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:29,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:29,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:29,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:30:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:29,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:30:29,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:29,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:30,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:30,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236721060] [2021-11-12 23:30:30,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236721060] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:30,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [14651478] [2021-11-12 23:30:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:30,328 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:30:30,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:30:30,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:30:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:30,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:30:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:30,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:31,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [14651478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:31,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148260847] [2021-11-12 23:30:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:31,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:30:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:30:31,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:30:31,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:30:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:31,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:30:31,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:31,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:32,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148260847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:32,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:30:32,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 5, 5] total 21 [2021-11-12 23:30:32,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460327938] [2021-11-12 23:30:32,432 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:30:32,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:30:32,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:30:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:30:32,435 INFO L87 Difference]: Start difference. First operand 58 states and 127 transitions. Second operand has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:33,652 INFO L93 Difference]: Finished difference Result 108 states and 207 transitions. [2021-11-12 23:30:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:30:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:30:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:33,656 INFO L225 Difference]: With dead ends: 108 [2021-11-12 23:30:33,656 INFO L226 Difference]: Without dead ends: 86 [2021-11-12 23:30:33,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:30:33,659 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 107 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 763.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 880.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:33,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 37 Invalid, 337 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [29 Valid, 263 Invalid, 0 Unknown, 45 Unchecked, 880.75ms Time] [2021-11-12 23:30:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-12 23:30:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-11-12 23:30:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.0759493670886076) internal successors, (164), 79 states have internal predecessors, (164), 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) [2021-11-12 23:30:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 164 transitions. [2021-11-12 23:30:33,675 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 164 transitions. Word has length 16 [2021-11-12 23:30:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:33,675 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 164 transitions. [2021-11-12 23:30:33,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:30:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 164 transitions. [2021-11-12 23:30:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:30:33,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:33,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:33,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:33,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:34,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-12 23:30:34,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:30:34,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 23:30:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash 614055865, now seen corresponding path program 1 times [2021-11-12 23:30:34,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:34,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404224598] [2021-11-12 23:30:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:34,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:34,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:34,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:34,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:30:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:34,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:30:34,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:30:34,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:34,792 INFO L354 Elim1Store]: treesize reduction 484, result has 1.4 percent of original size [2021-11-12 23:30:34,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 28 [2021-11-12 23:30:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:30:34,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:30:34,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404224598] [2021-11-12 23:30:34,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404224598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:34,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1789843813] [2021-11-12 23:30:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:34,842 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:30:34,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:30:34,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:30:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:35,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:30:35,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:35,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:35,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1789843813] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:35,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373013377] [2021-11-12 23:30:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:35,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:30:35,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:30:35,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:30:35,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 23:30:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:30:35,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:35,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:30:36,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373013377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:36,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:30:36,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5, 5, 5, 5] total 15 [2021-11-12 23:30:36,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303829986] [2021-11-12 23:30:36,136 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:30:36,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 23:30:36,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:30:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 23:30:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:30:36,138 INFO L87 Difference]: Start difference. First operand 80 states and 164 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 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) [2021-11-12 23:30:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:30:37,066 INFO L93 Difference]: Finished difference Result 89 states and 173 transitions. [2021-11-12 23:30:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:30:37,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 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 16 [2021-11-12 23:30:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:30:37,068 INFO L225 Difference]: With dead ends: 89 [2021-11-12 23:30:37,068 INFO L226 Difference]: Without dead ends: 65 [2021-11-12 23:30:37,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:30:37,070 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 547.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 617.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:30:37,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 26 Invalid, 248 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 69 Unchecked, 617.52ms Time] [2021-11-12 23:30:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-12 23:30:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2021-11-12 23:30:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.2) internal successors, (121), 55 states have internal predecessors, (121), 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) [2021-11-12 23:30:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 121 transitions. [2021-11-12 23:30:37,079 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 121 transitions. Word has length 16 [2021-11-12 23:30:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:30:37,080 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 121 transitions. [2021-11-12 23:30:37,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 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) [2021-11-12 23:30:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 121 transitions. [2021-11-12 23:30:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 23:30:37,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:30:37,082 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:30:37,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:37,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:30:37,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-12 23:30:37,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:30:37,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-12 23:30:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:30:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1456629408, now seen corresponding path program 2 times [2021-11-12 23:30:37,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:30:37,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391608828] [2021-11-12 23:30:37,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:30:37,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:30:37,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:30:37,701 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:30:37,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:30:37,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:30:37,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:30:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:30:37,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:30:37,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-11-12 23:30:38,080 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-12 23:30:38,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-11-12 23:33:26,859 WARN L227 SmtUtils]: Spent 2.74m on a formula simplification. DAG size of input: 375 DAG size of output: 127 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:33:26,860 INFO L354 Elim1Store]: treesize reduction 2057, result has 17.4 percent of original size [2021-11-12 23:33:26,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 121 treesize of output 476 [2021-11-12 23:40:53,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-12 23:40:53,629 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-12 23:40:53,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:53,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391608828] [2021-11-12 23:40:53,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/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") [2021-11-12 23:40:53,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407991760] [2021-11-12 23:40:53,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:40:53,632 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:53,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:40:53,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:40:53,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:40:53,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:40:53,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:40:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:40:53,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:53,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 23:40:53,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114683529] [2021-11-12 23:40:53,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:40:53,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:40:53,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:40:53,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:40:53,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 23:40:54,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:40:54,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:40:54,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:40:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:54,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 23:40:54,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:54,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 23:40:54,102 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 23:40:54,102 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 23:40:54,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-12 23:40:54,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-12 23:40:54,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-12 23:40:54,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:54,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:54,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:54,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cc117f7-b2a0-49ff-bf61-2609093a5477/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:40:54,715 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-11-12 23:40:54,719 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:40:54,719 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:40:54,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:40:54 BasicIcfg [2021-11-12 23:40:54,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:40:54,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:40:54,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:40:54,746 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:40:54,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:30:13" (3/4) ... [2021-11-12 23:40:54,749 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:40:54,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:40:54,750 INFO L158 Benchmark]: Toolchain (without parser) took 642428.04ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 55.2MB in the beginning and 60.5MB in the end (delta: -5.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,750 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:54,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.70ms. Allocated memory is still 90.2MB. Free memory was 55.0MB in the beginning and 69.9MB in the end (delta: -14.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.82ms. Allocated memory is still 90.2MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,751 INFO L158 Benchmark]: Boogie Preprocessor took 56.73ms. Allocated memory is still 90.2MB. Free memory was 67.8MB in the beginning and 66.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,752 INFO L158 Benchmark]: RCFGBuilder took 814.82ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 43.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,753 INFO L158 Benchmark]: TraceAbstraction took 641029.40ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 43.2MB in the beginning and 60.5MB in the end (delta: -17.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-11-12 23:40:54,753 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 121.6MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:40:54,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.70ms. Allocated memory is still 90.2MB. Free memory was 55.0MB in the beginning and 69.9MB in the end (delta: -14.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.82ms. Allocated memory is still 90.2MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.73ms. Allocated memory is still 90.2MB. Free memory was 67.8MB in the beginning and 66.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 814.82ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 43.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 641029.40ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 43.2MB in the beginning and 60.5MB in the end (delta: -17.3MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 121.6MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8s, 128 PlacesBefore, 24 PlacesAfterwards, 132 TransitionsBefore, 20 TransitionsAfterwards, 538 CoEnabledTransitionPairs, 7 FixpointIterations, 95 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 142 TotalNumberOfCompositions, 640 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 544, positive: 520, positive conditional: 0, positive unconditional: 520, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 357, positive: 349, positive conditional: 0, positive unconditional: 349, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 357, positive: 345, positive conditional: 0, positive unconditional: 345, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 337, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 544, positive: 171, positive conditional: 0, positive unconditional: 171, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 357, unknown conditional: 0, unknown unconditional: 357] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q; [L42] 0 int q_front, q_back, s, n, N; [L81] 0 pthread_t t1, t2; [L83] 0 N = __VERIFIER_nondet_int() [L84] 0 n = __VERIFIER_nondet_int() [L85] 0 q_front = __VERIFIER_nondet_int() [L86] 0 q_back = q_front [L87] CALL, EXPR 0 create_fresh_int_array(n) [L104] CALL 0 assume_abort_if_not(size >= 0) [L38] COND TRUE 0 !cond [L104] RET 0 assume_abort_if_not(size >= 0) [L105] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L105] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L107] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L108] 0 int i = 0; [L108] COND TRUE 0 i < size [L109] 0 arr[i] = __VERIFIER_nondet_int() [L108] 0 i++ [L108] COND TRUE 0 i < size [L109] 0 arr[i] = __VERIFIER_nondet_int() [L108] 0 i++ [L108] COND FALSE 0 !(i < size) [L111] 0 return arr; [L87] RET, EXPR 0 create_fresh_int_array(n) [L87] 0 q = create_fresh_int_array(n) [L89] CALL 0 assume_abort_if_not(N >= 0) [L38] COND TRUE 0 !cond [L89] RET 0 assume_abort_if_not(N >= 0) [L92] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L47] 1 int i=0; [L47] COND FALSE 1 !(i= 0 && q_back < n) [L38] COND FALSE 1 !(!cond) [L55] RET 1 assume_abort_if_not(q_back >= 0 && q_back < n) [L56] EXPR 1 q[q_back] [L56] CALL 1 assume_abort_if_not(q[q_back] == 0) [L38] COND TRUE 1 !cond [L56] RET 1 assume_abort_if_not(q[q_back] == 0) [L57] 1 q_back++ [L60] 1 return 0; [L93] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L94] 0 \read(t1) [L94] FCALL, JOIN 1 pthread_join(t1, 0) [L95] 0 \read(t2) [L64] 2 int j; [L65] COND TRUE 2 1 [L67] CALL 2 assume_abort_if_not(q_back > q_front && q_front >= 0 && q_front < n) [L38] COND FALSE 2 !(!cond) [L67] RET 2 assume_abort_if_not(q_back > q_front && q_front >= 0 && q_front < n) [L68] EXPR 2 q[q_front] [L68] 2 j = q[q_front] [L69] 2 q_front++ [L71] 2 s = s + j [L72] COND FALSE 2 !(j == 0) [L65] COND TRUE 2 1 [L67] CALL 2 assume_abort_if_not(q_back > q_front && q_front >= 0 && q_front < n) [L38] COND FALSE 2 !(!cond) [L67] RET 2 assume_abort_if_not(q_back > q_front && q_front >= 0 && q_front < n) [L68] EXPR 2 q[q_front] [L68] 2 j = q[q_front] [L69] 2 q_front++ [L71] 2 s = s + j [L72] COND TRUE 2 j == 0 [L77] 2 return 0; [L95] FCALL, JOIN 2 pthread_join(t2, 0) [L97] CALL 0 assume_abort_if_not(s != N) [L38] COND FALSE 0 !(!cond) [L97] RET 0 assume_abort_if_not(s != N) [L98] 0 reach_error() - UnprovableResult [Line: 92]: 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: 93]: 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 5 procedures, 142 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 640.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 2116.92ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 1784.67ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 114 IncrementalHoareTripleChecker+Unchecked, 415 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 617 IncrementalHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 13 mSDtfsCounter, 617 mSolverCounterSat, 11.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=3, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 620.8s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 234 ConstructedInterpolants, 24 QuantifiedInterpolants, 2466 SizeOfPredicates, 63 NumberOfNonLiveVariables, 814 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 7/26 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