./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:56,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:56,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:56,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:56,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:56,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:56,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:56,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:56,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:56,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:56,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:56,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:56,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:56,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:56,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:56,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:56,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:56,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:56,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:56,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:56,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:56,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:56,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:56,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:56,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:56,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:56,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:56,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:56,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:56,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:56,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:56,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:56,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:56,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:56,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:56,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:56,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:56,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:56,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:56,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:56,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:56,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:35:56,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:56,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:56,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:56,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:56,413 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:56,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:56,414 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:56,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:56,422 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:56,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:56,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:56,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:56,424 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:56,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:56,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:56,425 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:56,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:56,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:35:56,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:56,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:35:56,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:56,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:56,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:56,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:56,428 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:56,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:35:56,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:56,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:56,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:56,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:56,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:56,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:56,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:56,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:56,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:56,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:56,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:56,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:56,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:56,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:56,435 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-19 14:35:56,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:56,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:56,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:56,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:56,926 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:56,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-19 14:35:57,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/cd000b7ce/691c1584ae9644da9870c4ab81ef8019/FLAGb9a9dd7a8 [2021-11-19 14:35:57,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:57,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-19 14:35:57,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/cd000b7ce/691c1584ae9644da9870c4ab81ef8019/FLAGb9a9dd7a8 [2021-11-19 14:35:57,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/cd000b7ce/691c1584ae9644da9870c4ab81ef8019 [2021-11-19 14:35:57,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:57,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:57,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:57,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:57,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:57,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:57" (1/1) ... [2021-11-19 14:35:57,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7623cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:57, skipping insertion in model container [2021-11-19 14:35:57,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:57" (1/1) ... [2021-11-19 14:35:57,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:58,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:58,191 WARN L230 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-19 14:35:58,202 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:58,212 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) [2021-11-19 14:35:58,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ac48640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:58, skipping insertion in model container [2021-11-19 14:35:58,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:58,213 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:35:58,215 INFO L158 Benchmark]: Toolchain (without parser) took 249.53ms. Allocated memory is still 109.1MB. Free memory was 72.6MB in the beginning and 85.3MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:35:58,216 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:58,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.39ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 85.3MB in the end (delta: -12.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:35:58,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.39ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 85.3MB in the end (delta: -12.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:36:01,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:36:01,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:36:01,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:36:01,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:36:01,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:36:01,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:36:01,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:36:01,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:36:01,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:36:01,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:36:01,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:36:01,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:36:01,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:36:01,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:36:01,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:36:01,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:36:01,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:36:01,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:36:01,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:36:01,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:36:01,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:36:01,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:36:01,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:36:01,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:36:01,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:36:01,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:36:01,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:36:01,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:36:01,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:36:01,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:36:01,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:36:01,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:36:01,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:36:01,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:36:01,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:36:01,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:36:01,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:36:01,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:36:01,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:36:01,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:36:01,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:36:01,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:36:01,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:36:01,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:36:01,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:36:01,263 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:36:01,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:36:01,264 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:36:01,264 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:36:01,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:36:01,265 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:36:01,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:36:01,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:36:01,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:36:01,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:36:01,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:36:01,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:36:01,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:36:01,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:36:01,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:36:01,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:36:01,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:36:01,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:36:01,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:36:01,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:36:01,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:36:01,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:36:01,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:36:01,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:36:01,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:36:01,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:36:01,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:36:01,275 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:36:01,276 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:01,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:36:01,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:36:01,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:36:01,278 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-19 14:36:01,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:36:01,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:36:01,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:36:01,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:36:01,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:36:01,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-19 14:36:01,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/44a96841d/70133460ad804f4f909d3b056da2cfa1/FLAGed7918d1f [2021-11-19 14:36:02,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:36:02,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-19 14:36:02,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/44a96841d/70133460ad804f4f909d3b056da2cfa1/FLAGed7918d1f [2021-11-19 14:36:02,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/data/44a96841d/70133460ad804f4f909d3b056da2cfa1 [2021-11-19 14:36:02,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:36:02,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:36:02,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:36:02,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:36:02,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:36:02,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:36:02" (1/1) ... [2021-11-19 14:36:02,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a262c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:02, skipping insertion in model container [2021-11-19 14:36:02,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:36:02" (1/1) ... [2021-11-19 14:36:02,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:36:02,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:36:03,264 WARN L230 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-19 14:36:03,292 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:36:03,307 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:36:03,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:36:03,350 WARN L230 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-19 14:36:03,375 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:36:03,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:36:03,421 WARN L230 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_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-19 14:36:03,429 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:36:03,447 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:36:03,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03 WrapperNode [2021-11-19 14:36:03,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:36:03,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:36:03,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:36:03,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:36:03,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,506 INFO L137 Inliner]: procedures = 28, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2021-11-19 14:36:03,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:36:03,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:36:03,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:36:03,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:36:03,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:36:03,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:36:03,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:36:03,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:36:03,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (1/1) ... [2021-11-19 14:36:03,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:36:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:36:03,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:36:03,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:36:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:36:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:36:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:36:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:36:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 14:36:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 14:36:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 14:36:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 14:36:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 14:36:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 14:36:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:36:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:36:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:36:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:36:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:36:03,684 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 14:36:03,862 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:36:03,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:36:04,293 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:36:04,528 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:36:04,529 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 14:36:04,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:36:04 BoogieIcfgContainer [2021-11-19 14:36:04,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:36:04,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:36:04,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:36:04,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:36:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:36:02" (1/3) ... [2021-11-19 14:36:04,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b42d615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:36:04, skipping insertion in model container [2021-11-19 14:36:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:36:03" (2/3) ... [2021-11-19 14:36:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b42d615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:36:04, skipping insertion in model container [2021-11-19 14:36:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:36:04" (3/3) ... [2021-11-19 14:36:04,543 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-11-19 14:36:04,550 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 14:36:04,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:36:04,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:36:04,552 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 14:36:04,630 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,631 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,645 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,646 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,647 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,649 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,650 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,651 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,651 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,651 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,651 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,652 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,660 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,660 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,660 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,660 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,661 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,661 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,661 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,661 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,680 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,709 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~tmp~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 14:36:04,717 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 14:36:04,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:36:04,774 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 [2021-11-19 14:36:04,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:36:04,792 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 14:36:04,808 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 117 transitions, 250 flow [2021-11-19 14:36:04,811 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 117 transitions, 250 flow [2021-11-19 14:36:04,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 250 flow [2021-11-19 14:36:04,875 INFO L129 PetriNetUnfolder]: 9/115 cut-off events. [2021-11-19 14:36:04,876 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 14:36:04,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 9/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2021-11-19 14:36:04,883 INFO L116 LiptonReduction]: Number of co-enabled transitions 572 [2021-11-19 14:36:18,400 INFO L131 LiptonReduction]: Checked pairs total: 922 [2021-11-19 14:36:18,401 INFO L133 LiptonReduction]: Total number of compositions: 108 [2021-11-19 14:36:18,409 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 22 transitions, 60 flow [2021-11-19 14:36:18,422 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 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) [2021-11-19 14:36:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 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) [2021-11-19 14:36:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 14:36:18,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:18,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:18,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -992262949, now seen corresponding path program 1 times [2021-11-19 14:36:18,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:18,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162013111] [2021-11-19 14:36:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:18,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:18,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:18,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:36:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:18,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:36:18,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:18,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:18,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:18,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162013111] [2021-11-19 14:36:18,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162013111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:18,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:18,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-19 14:36:18,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698168269] [2021-11-19 14:36:18,824 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:18,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:36:18,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:36:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:18,857 INFO L87 Difference]: Start difference. First operand has 53 states, 52 states have (on average 2.269230769230769) internal successors, (118), 52 states have internal predecessors, (118), 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 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-11-19 14:36:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:19,066 INFO L93 Difference]: Finished difference Result 98 states and 222 transitions. [2021-11-19 14:36:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:36:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 [2021-11-19 14:36:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:19,080 INFO L225 Difference]: With dead ends: 98 [2021-11-19 14:36:19,081 INFO L226 Difference]: Without dead ends: 93 [2021-11-19 14:36:19,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:36:19,086 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:19,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-19 14:36:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2021-11-19 14:36:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 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) [2021-11-19 14:36:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 169 transitions. [2021-11-19 14:36:19,155 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 169 transitions. Word has length 14 [2021-11-19 14:36:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:19,155 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 169 transitions. [2021-11-19 14:36:19,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2021-11-19 14:36:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 169 transitions. [2021-11-19 14:36:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:19,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:19,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:19,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:19,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:19,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:19,373 INFO L85 PathProgramCache]: Analyzing trace with hash -111723762, now seen corresponding path program 1 times [2021-11-19 14:36:19,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:19,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424853851] [2021-11-19 14:36:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:19,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:19,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:19,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:36:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:19,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:19,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:19,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:19,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424853851] [2021-11-19 14:36:19,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424853851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:19,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:19,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:19,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824184719] [2021-11-19 14:36:19,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:19,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:19,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:19,778 INFO L87 Difference]: Start difference. First operand 75 states and 169 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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) [2021-11-19 14:36:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:20,566 INFO L93 Difference]: Finished difference Result 109 states and 240 transitions. [2021-11-19 14:36:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:36:20,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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 16 [2021-11-19 14:36:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:20,570 INFO L225 Difference]: With dead ends: 109 [2021-11-19 14:36:20,570 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 14:36:20,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:36:20,573 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:20,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 17 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:36:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 14:36:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2021-11-19 14:36:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.2941176470588234) internal successors, (156), 68 states have internal predecessors, (156), 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) [2021-11-19 14:36:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 156 transitions. [2021-11-19 14:36:20,603 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 156 transitions. Word has length 16 [2021-11-19 14:36:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:20,603 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 156 transitions. [2021-11-19 14:36:20,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 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) [2021-11-19 14:36:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 156 transitions. [2021-11-19 14:36:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:20,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:20,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:20,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:20,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:20,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1871419396, now seen corresponding path program 1 times [2021-11-19 14:36:20,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:20,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131081494] [2021-11-19 14:36:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:20,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:20,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:20,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:36:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:20,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:21,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:21,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:21,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131081494] [2021-11-19 14:36:21,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131081494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:21,239 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:21,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:21,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77068611] [2021-11-19 14:36:21,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:21,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:21,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:21,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:21,243 INFO L87 Difference]: Start difference. First operand 69 states and 156 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:21,857 INFO L93 Difference]: Finished difference Result 119 states and 272 transitions. [2021-11-19 14:36:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:36:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 [2021-11-19 14:36:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:21,860 INFO L225 Difference]: With dead ends: 119 [2021-11-19 14:36:21,860 INFO L226 Difference]: Without dead ends: 119 [2021-11-19 14:36:21,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:21,862 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:21,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 14 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-19 14:36:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 73. [2021-11-19 14:36:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.3333333333333335) internal successors, (168), 72 states have internal predecessors, (168), 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) [2021-11-19 14:36:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 168 transitions. [2021-11-19 14:36:21,878 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 168 transitions. Word has length 16 [2021-11-19 14:36:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:21,879 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 168 transitions. [2021-11-19 14:36:21,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 168 transitions. [2021-11-19 14:36:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:21,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:21,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:21,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:22,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:22,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1508504022, now seen corresponding path program 2 times [2021-11-19 14:36:22,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:22,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066250139] [2021-11-19 14:36:22,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:22,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:22,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:22,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:36:22,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:36:22,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:22,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:22,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:22,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:22,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:22,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066250139] [2021-11-19 14:36:22,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066250139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:22,523 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:22,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:22,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109597186] [2021-11-19 14:36:22,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:22,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:22,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:22,525 INFO L87 Difference]: Start difference. First operand 73 states and 168 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:23,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:23,211 INFO L93 Difference]: Finished difference Result 163 states and 367 transitions. [2021-11-19 14:36:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:36:23,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 [2021-11-19 14:36:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:23,214 INFO L225 Difference]: With dead ends: 163 [2021-11-19 14:36:23,215 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 14:36:23,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:36:23,217 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 113 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:23,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 9 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 14:36:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 87. [2021-11-19 14:36:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.36046511627907) internal successors, (203), 86 states have internal predecessors, (203), 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) [2021-11-19 14:36:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 203 transitions. [2021-11-19 14:36:23,233 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 203 transitions. Word has length 16 [2021-11-19 14:36:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:23,234 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 203 transitions. [2021-11-19 14:36:23,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 203 transitions. [2021-11-19 14:36:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:23,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:23,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:23,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:23,450 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1168020096, now seen corresponding path program 3 times [2021-11-19 14:36:23,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:23,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986973575] [2021-11-19 14:36:23,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:36:23,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:23,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:23,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:23,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:36:23,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:36:23,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:23,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:23,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:23,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:24,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:24,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986973575] [2021-11-19 14:36:24,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986973575] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:24,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:24,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-19 14:36:24,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709598196] [2021-11-19 14:36:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:24,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:24,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:24,028 INFO L87 Difference]: Start difference. First operand 87 states and 203 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:24,320 INFO L93 Difference]: Finished difference Result 123 states and 284 transitions. [2021-11-19 14:36:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 [2021-11-19 14:36:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:24,323 INFO L225 Difference]: With dead ends: 123 [2021-11-19 14:36:24,323 INFO L226 Difference]: Without dead ends: 123 [2021-11-19 14:36:24,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:24,325 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:24,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-19 14:36:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2021-11-19 14:36:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.369047619047619) internal successors, (199), 84 states have internal predecessors, (199), 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) [2021-11-19 14:36:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 199 transitions. [2021-11-19 14:36:24,338 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 199 transitions. Word has length 16 [2021-11-19 14:36:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:24,338 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 199 transitions. [2021-11-19 14:36:24,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 199 transitions. [2021-11-19 14:36:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:24,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:24,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:24,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:36:24,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -552107548, now seen corresponding path program 4 times [2021-11-19 14:36:24,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:24,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591866015] [2021-11-19 14:36:24,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:36:24,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:24,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:24,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:36:24,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:36:24,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:24,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:24,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:24,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:24,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:24,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591866015] [2021-11-19 14:36:24,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591866015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:24,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:24,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:24,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831453188] [2021-11-19 14:36:24,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:24,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:24,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:24,915 INFO L87 Difference]: Start difference. First operand 85 states and 199 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-19 14:36:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:25,512 INFO L93 Difference]: Finished difference Result 143 states and 313 transitions. [2021-11-19 14:36:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:36:25,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 [2021-11-19 14:36:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:25,514 INFO L225 Difference]: With dead ends: 143 [2021-11-19 14:36:25,514 INFO L226 Difference]: Without dead ends: 143 [2021-11-19 14:36:25,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:36:25,516 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:25,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 10 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-19 14:36:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 81. [2021-11-19 14:36:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.375) internal successors, (190), 80 states have internal predecessors, (190), 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) [2021-11-19 14:36:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 190 transitions. [2021-11-19 14:36:25,541 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 190 transitions. Word has length 16 [2021-11-19 14:36:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:25,541 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 190 transitions. [2021-11-19 14:36:25,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-19 14:36:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 190 transitions. [2021-11-19 14:36:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:25,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:25,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:25,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:25,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:25,773 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 652945452, now seen corresponding path program 2 times [2021-11-19 14:36:25,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:25,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309903099] [2021-11-19 14:36:25,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:25,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:25,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:25,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:36:25,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:36:25,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:25,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:25,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:26,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:26,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:26,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309903099] [2021-11-19 14:36:26,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309903099] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:26,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1280184415] [2021-11-19 14:36:26,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:26,464 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:26,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:26,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 14:36:26,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:36:26,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:26,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:26,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:26,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:26,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1280184415] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:26,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:36:26,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5] total 16 [2021-11-19 14:36:26,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730561673] [2021-11-19 14:36:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:26,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:36:26,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:36:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:36:26,984 INFO L87 Difference]: Start difference. First operand 81 states and 190 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:27,365 INFO L93 Difference]: Finished difference Result 121 states and 282 transitions. [2021-11-19 14:36:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 [2021-11-19 14:36:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:27,368 INFO L225 Difference]: With dead ends: 121 [2021-11-19 14:36:27,368 INFO L226 Difference]: Without dead ends: 121 [2021-11-19 14:36:27,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:36:27,370 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:27,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 6 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-19 14:36:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 79. [2021-11-19 14:36:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.371794871794872) internal successors, (185), 78 states have internal predecessors, (185), 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) [2021-11-19 14:36:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 185 transitions. [2021-11-19 14:36:27,380 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 185 transitions. Word has length 16 [2021-11-19 14:36:27,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:27,381 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 185 transitions. [2021-11-19 14:36:27,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 185 transitions. [2021-11-19 14:36:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:27,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:27,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:27,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-19 14:36:27,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:36:27,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:27,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -171475890, now seen corresponding path program 5 times [2021-11-19 14:36:27,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:27,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431386488] [2021-11-19 14:36:27,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:36:27,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:27,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:27,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:36:27,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:36:27,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:27,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:27,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:28,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:28,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:28,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431386488] [2021-11-19 14:36:28,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431386488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:28,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:28,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:28,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794901021] [2021-11-19 14:36:28,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:28,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:28,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:28,124 INFO L87 Difference]: Start difference. First operand 79 states and 185 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:28,741 INFO L93 Difference]: Finished difference Result 177 states and 426 transitions. [2021-11-19 14:36:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:36:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 [2021-11-19 14:36:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:28,744 INFO L225 Difference]: With dead ends: 177 [2021-11-19 14:36:28,744 INFO L226 Difference]: Without dead ends: 169 [2021-11-19 14:36:28,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:28,746 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:28,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 10 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-19 14:36:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 93. [2021-11-19 14:36:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.369565217391304) internal successors, (218), 92 states have internal predecessors, (218), 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) [2021-11-19 14:36:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 218 transitions. [2021-11-19 14:36:28,757 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 218 transitions. Word has length 16 [2021-11-19 14:36:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:28,757 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 218 transitions. [2021-11-19 14:36:28,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-19 14:36:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 218 transitions. [2021-11-19 14:36:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:28,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:28,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:28,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:28,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:28,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1789919068, now seen corresponding path program 6 times [2021-11-19 14:36:28,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:28,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203227335] [2021-11-19 14:36:28,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:36:28,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:28,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:28,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:28,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:36:29,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-19 14:36:29,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:29,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:29,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:29,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:29,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:29,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203227335] [2021-11-19 14:36:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203227335] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:29,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:29,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-19 14:36:29,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195631155] [2021-11-19 14:36:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:29,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:29,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:29,473 INFO L87 Difference]: Start difference. First operand 93 states and 218 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:29,694 INFO L93 Difference]: Finished difference Result 127 states and 297 transitions. [2021-11-19 14:36:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 [2021-11-19 14:36:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:29,696 INFO L225 Difference]: With dead ends: 127 [2021-11-19 14:36:29,696 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 14:36:29,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:29,698 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:29,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 4 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 14:36:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2021-11-19 14:36:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.375) internal successors, (228), 96 states have internal predecessors, (228), 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) [2021-11-19 14:36:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 228 transitions. [2021-11-19 14:36:29,707 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 228 transitions. Word has length 16 [2021-11-19 14:36:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:29,708 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 228 transitions. [2021-11-19 14:36:29,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 228 transitions. [2021-11-19 14:36:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:29,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:29,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:29,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:29,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:29,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:29,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash 784920584, now seen corresponding path program 7 times [2021-11-19 14:36:29,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:29,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214928849] [2021-11-19 14:36:29,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 14:36:29,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:29,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:29,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:29,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:36:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:30,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:30,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:30,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:30,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214928849] [2021-11-19 14:36:30,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214928849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:30,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:30,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:30,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273622045] [2021-11-19 14:36:30,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:30,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:30,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:30,242 INFO L87 Difference]: Start difference. First operand 97 states and 228 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-19 14:36:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:30,888 INFO L93 Difference]: Finished difference Result 193 states and 451 transitions. [2021-11-19 14:36:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:36:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 [2021-11-19 14:36:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:30,891 INFO L225 Difference]: With dead ends: 193 [2021-11-19 14:36:30,891 INFO L226 Difference]: Without dead ends: 193 [2021-11-19 14:36:30,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:36:30,892 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 90 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:30,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 10 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:36:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-19 14:36:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 95. [2021-11-19 14:36:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.372340425531915) internal successors, (223), 94 states have internal predecessors, (223), 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) [2021-11-19 14:36:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 223 transitions. [2021-11-19 14:36:30,903 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 223 transitions. Word has length 16 [2021-11-19 14:36:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:30,903 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 223 transitions. [2021-11-19 14:36:30,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2021-11-19 14:36:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 223 transitions. [2021-11-19 14:36:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:30,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:30,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:30,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:31,119 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:31,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1989973584, now seen corresponding path program 3 times [2021-11-19 14:36:31,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:31,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995765973] [2021-11-19 14:36:31,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:36:31,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:31,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:31,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:36:31,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:36:31,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:31,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:31,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:31,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:31,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995765973] [2021-11-19 14:36:31,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995765973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:36:31,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409678157] [2021-11-19 14:36:31,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:36:31,669 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:31,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:36:31,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:36:31,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:36:31,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:36:31,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:31,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:31,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:32,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:32,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1409678157] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:32,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:36:32,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 5] total 16 [2021-11-19 14:36:32,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576111944] [2021-11-19 14:36:32,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:32,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:36:32,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:36:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:36:32,151 INFO L87 Difference]: Start difference. First operand 95 states and 223 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:32,441 INFO L93 Difference]: Finished difference Result 125 states and 279 transitions. [2021-11-19 14:36:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 [2021-11-19 14:36:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:32,443 INFO L225 Difference]: With dead ends: 125 [2021-11-19 14:36:32,443 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 14:36:32,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:36:32,444 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:32,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 7 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:36:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 14:36:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-11-19 14:36:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 90 states have internal predecessors, (213), 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) [2021-11-19 14:36:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 213 transitions. [2021-11-19 14:36:32,451 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 213 transitions. Word has length 16 [2021-11-19 14:36:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:32,452 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 213 transitions. [2021-11-19 14:36:32,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 213 transitions. [2021-11-19 14:36:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:32,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:32,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:32,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 14:36:32,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:32,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:36:32,869 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1605210540, now seen corresponding path program 8 times [2021-11-19 14:36:32,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:32,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612786064] [2021-11-19 14:36:32,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:36:32,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:32,874 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:32,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:36:33,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:36:33,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:33,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:33,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:33,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:33,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:33,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612786064] [2021-11-19 14:36:33,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612786064] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:33,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:33,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-11-19 14:36:33,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941538374] [2021-11-19 14:36:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:33,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:36:33,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:36:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:33,338 INFO L87 Difference]: Start difference. First operand 91 states and 213 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:33,590 INFO L93 Difference]: Finished difference Result 99 states and 233 transitions. [2021-11-19 14:36:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:36:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 [2021-11-19 14:36:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:33,592 INFO L225 Difference]: With dead ends: 99 [2021-11-19 14:36:33,592 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 14:36:33,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:36:33,593 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:33,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 7 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 14:36:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2021-11-19 14:36:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.372093023255814) internal successors, (204), 86 states have internal predecessors, (204), 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) [2021-11-19 14:36:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 204 transitions. [2021-11-19 14:36:33,600 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 204 transitions. Word has length 16 [2021-11-19 14:36:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:33,600 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 204 transitions. [2021-11-19 14:36:33,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-19 14:36:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 204 transitions. [2021-11-19 14:36:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:36:33,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:33,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:33,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 14:36:33,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:33,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -114917104, now seen corresponding path program 9 times [2021-11-19 14:36:33,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:33,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898737434] [2021-11-19 14:36:33,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:36:33,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:33,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:33,842 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:33,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:36:33,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 14:36:33,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:36:33,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:36:33,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:34,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:36:34,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:34,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898737434] [2021-11-19 14:36:34,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898737434] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:36:34,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:36:34,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:36:34,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138651840] [2021-11-19 14:36:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:34,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:36:34,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:36:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:36:34,308 INFO L87 Difference]: Start difference. First operand 87 states and 204 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-19 14:36:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:34,528 INFO L93 Difference]: Finished difference Result 123 states and 273 transitions. [2021-11-19 14:36:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:36:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 [2021-11-19 14:36:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:34,530 INFO L225 Difference]: With dead ends: 123 [2021-11-19 14:36:34,530 INFO L226 Difference]: Without dead ends: 88 [2021-11-19 14:36:34,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:36:34,531 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:34,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:36:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-19 14:36:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-19 14:36:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3563218390804597) internal successors, (205), 87 states have internal predecessors, (205), 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) [2021-11-19 14:36:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 205 transitions. [2021-11-19 14:36:34,537 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 205 transitions. Word has length 16 [2021-11-19 14:36:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:34,538 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 205 transitions. [2021-11-19 14:36:34,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-19 14:36:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 205 transitions. [2021-11-19 14:36:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:36:34,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:34,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:34,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:34,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:34,746 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -177409821, now seen corresponding path program 1 times [2021-11-19 14:36:34,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:34,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397344628] [2021-11-19 14:36:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:34,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:34,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:34,749 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:34,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:36:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:36:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:36:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:36:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:36:34,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:36:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:36:35,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:36:35,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397344628] [2021-11-19 14:36:35,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397344628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:36:35,034 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:36:35,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 14:36:35,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084354940] [2021-11-19 14:36:35,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:36:35,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:36:35,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:36:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:36:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:36:35,036 INFO L87 Difference]: Start difference. First operand 88 states and 205 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:36:35,535 INFO L93 Difference]: Finished difference Result 114 states and 270 transitions. [2021-11-19 14:36:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:36:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 14:36:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:36:35,536 INFO L225 Difference]: With dead ends: 114 [2021-11-19 14:36:35,537 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 14:36:35,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:36:35,537 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:36:35,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 16 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:36:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 14:36:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 76. [2021-11-19 14:36:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.2933333333333334) internal successors, (172), 75 states have internal predecessors, (172), 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) [2021-11-19 14:36:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 172 transitions. [2021-11-19 14:36:35,542 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 172 transitions. Word has length 17 [2021-11-19 14:36:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:36:35,542 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 172 transitions. [2021-11-19 14:36:35,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:36:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 172 transitions. [2021-11-19 14:36:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 14:36:35,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:36:35,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:36:35,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:35,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,746 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-19 14:36:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:36:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2145883402, now seen corresponding path program 1 times [2021-11-19 14:36:35,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:36:35,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342454571] [2021-11-19 14:36:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:36:35,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:36:35,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:36:35,750 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:36:35,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:36:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:36:35,899 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:36:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:36:36,121 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 14:36:36,121 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:36:36,122 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-19 14:36:36,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-19 14:36:36,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-19 14:36:36,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:36:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:36:36,337 INFO L732 BasicCegarLoop]: Path program histogram: [9, 3, 1, 1, 1] [2021-11-19 14:36:36,341 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 14:36:36,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:36:36,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:36:36 BasicIcfg [2021-11-19 14:36:36,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:36:36,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:36:36,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:36:36,427 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:36:36,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:36:04" (3/4) ... [2021-11-19 14:36:36,430 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:36:36,507 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bc517ab-0a13-4e8c-b7a5-45a36bd48c6c/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:36:36,507 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:36:36,508 INFO L158 Benchmark]: Toolchain (without parser) took 33591.14ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 27.9MB in the beginning and 29.4MB in the end (delta: -1.5MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,508 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:36:36,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.34ms. Allocated memory is still 52.4MB. Free memory was 27.7MB in the beginning and 25.8MB in the end (delta: 1.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.93ms. Allocated memory is still 52.4MB. Free memory was 25.7MB in the beginning and 23.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,510 INFO L158 Benchmark]: Boogie Preprocessor took 54.14ms. Allocated memory is still 52.4MB. Free memory was 23.7MB in the beginning and 22.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:36:36,510 INFO L158 Benchmark]: RCFGBuilder took 969.37ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 22.1MB in the beginning and 35.0MB in the end (delta: -12.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,511 INFO L158 Benchmark]: TraceAbstraction took 31891.21ms. Allocated memory is still 62.9MB. Free memory was 34.8MB in the beginning and 36.4MB in the end (delta: -1.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,511 INFO L158 Benchmark]: Witness Printer took 80.80ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 29.4MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:36:36,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 52.4MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.34ms. Allocated memory is still 52.4MB. Free memory was 27.7MB in the beginning and 25.8MB in the end (delta: 1.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.93ms. Allocated memory is still 52.4MB. Free memory was 25.7MB in the beginning and 23.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.14ms. Allocated memory is still 52.4MB. Free memory was 23.7MB in the beginning and 22.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 969.37ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 22.1MB in the beginning and 35.0MB in the end (delta: -12.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * TraceAbstraction took 31891.21ms. Allocated memory is still 62.9MB. Free memory was 34.8MB in the beginning and 36.4MB in the end (delta: -1.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Witness Printer took 80.80ms. Allocated memory is still 62.9MB. Free memory was 36.4MB in the beginning and 29.4MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.6s, 115 PlacesBefore, 26 PlacesAfterwards, 117 TransitionsBefore, 22 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 7 FixpointIterations, 72 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 108 TotalNumberOfCompositions, 922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 746, positive: 703, positive conditional: 0, positive unconditional: 703, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 401, positive: 386, positive conditional: 0, positive unconditional: 386, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 401, positive: 386, positive conditional: 0, positive unconditional: 386, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 377, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 377, negative conditional: 0, negative unconditional: 377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 746, positive: 317, positive conditional: 0, positive unconditional: 317, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 401, unknown conditional: 0, unknown unconditional: 401] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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 - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [\old(size)=1, A={0:0}, arr={10:0}, counter=0, i=0, N=1, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [\old(size)=1, A={0:0}, arr={10:0}, counter=0, i=1, N=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={10:0}, counter=0, N=1, pthread_create(&t1, 0, thread1, 0)=-1, t1={23:0}, t2={31:0}] [L49] 1 int i=0; VAL [A={10:0}, counter=0, i=0, N=1] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={10:0}, counter=0, N=1, pthread_create(&t2, 0, thread2, 0)=0, t1={23:0}, t2={31:0}] [L83] 0 \read(t1) VAL [\read(t1)=-1, A={10:0}, counter=0, N=1, t1={23:0}, t2={31:0}] [L62] 2 int i=0; VAL [A={10:0}, counter=0, i=0, N=1] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L67] 2 counter = tmp [L62] 2 i++ VAL [A={10:0}, counter=-2, i=1, N=1, tmp=4294967294] [L62] COND FALSE 2 !(i