./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:17,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:17,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:17,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:17,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:17,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:17,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:17,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:17,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:17,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:17,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:17,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:17,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:17,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:17,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:17,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:17,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:17,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:17,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:17,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:17,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:17,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:17,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:17,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:17,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:17,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:17,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:17,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:17,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:17,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:17,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:17,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:17,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:17,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:17,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:17,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:17,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:17,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:17,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:17,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:17,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:17,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:38:17,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:17,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:17,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:17,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:17,657 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:17,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:17,657 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:38:17,658 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:17,659 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:38:17,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:38:17,659 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:38:17,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:17,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:38:17,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:38:17,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:38:17,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:17,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:38:17,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:17,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:38:17,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:17,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:38:17,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:38:17,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:17,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:38:17,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:17,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:17,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:17,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:17,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:17,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:38:17,670 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:38:17,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:38:17,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:38:17,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:17,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:17,672 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_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2021-11-12 22:38:17,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:17,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:17,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:17,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:17,973 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:17,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-12 22:38:18,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/ca575edf5/7e4a57f7f60645b7908a1cf0b1f708c2/FLAGebc5a9613 [2021-11-12 22:38:18,512 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:18,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-12 22:38:18,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/ca575edf5/7e4a57f7f60645b7908a1cf0b1f708c2/FLAGebc5a9613 [2021-11-12 22:38:18,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/ca575edf5/7e4a57f7f60645b7908a1cf0b1f708c2 [2021-11-12 22:38:18,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:18,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:18,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:18,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:18,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:18,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:18" (1/1) ... [2021-11-12 22:38:18,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595e1cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:18, skipping insertion in model container [2021-11-12 22:38:18,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:18" (1/1) ... [2021-11-12 22:38:18,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:18,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:19,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-12 22:38:19,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:19,182 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:38:19,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5820cb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:19, skipping insertion in model container [2021-11-12 22:38:19,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:19,183 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:38:19,187 INFO L158 Benchmark]: Toolchain (without parser) took 284.04ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 73.3MB in the beginning and 130.2MB in the end (delta: -56.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:38:19,190 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:38:19,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.46ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 73.0MB in the beginning and 130.2MB in the end (delta: -57.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:38:19,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.46ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 73.0MB in the beginning and 130.2MB in the end (delta: -57.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 135]: 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_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:21,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:21,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:21,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:21,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:21,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:21,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:21,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:21,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:21,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:21,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:21,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:21,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:21,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:21,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:21,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:21,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:21,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:21,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:21,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:21,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:21,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:21,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:21,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:21,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:21,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:21,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:21,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:21,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:21,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:21,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:21,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:21,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:21,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:21,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:21,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:21,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:21,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:21,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:21,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:21,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:21,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:38:21,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:21,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:21,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:21,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:21,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:21,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:21,567 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:21,567 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:21,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:21,568 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:21,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:21,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:38:21,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:38:21,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:21,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:38:21,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:21,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:38:21,570 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:21,570 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:38:21,571 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:38:21,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:38:21,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:38:21,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:21,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:38:21,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:21,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:38:21,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:21,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:21,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:21,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:21,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:38:21,573 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:38:21,574 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:38:21,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:38:21,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:21,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:21,575 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_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2021-11-12 22:38:21,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:21,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:21,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:21,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:21,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:21,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-12 22:38:22,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/8aa9017ed/5320504de2574b358aa574be2e356527/FLAG51e6572d9 [2021-11-12 22:38:22,626 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:22,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2021-11-12 22:38:22,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/8aa9017ed/5320504de2574b358aa574be2e356527/FLAG51e6572d9 [2021-11-12 22:38:22,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/data/8aa9017ed/5320504de2574b358aa574be2e356527 [2021-11-12 22:38:22,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:22,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:22,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:22,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:22,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:22,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:22" (1/1) ... [2021-11-12 22:38:22,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e875b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:22, skipping insertion in model container [2021-11-12 22:38:22,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:22" (1/1) ... [2021-11-12 22:38:23,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:23,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:23,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-12 22:38:23,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:23,251 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:38:23,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:23,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-12 22:38:23,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:23,294 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:38:23,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2021-11-12 22:38:23,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:38:23,373 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:38:23,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23 WrapperNode [2021-11-12 22:38:23,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:23,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:23,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:38:23,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:38:23,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:38:23,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:38:23,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:38:23,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:38:23,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:38:23,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:38:23,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:38:23,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:38:23,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (1/1) ... [2021-11-12 22:38:23,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:23,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:23,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:38:23,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:38:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:38:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:38:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:38:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 22:38:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 22:38:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 22:38:23,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 22:38:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-12 22:38:23,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-12 22:38:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 22:38:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 22:38:23,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:38:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:38:23,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:38:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:38:23,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:38:23,584 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 22:38:24,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:38:24,544 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 22:38:24,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:24 BoogieIcfgContainer [2021-11-12 22:38:24,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:38:24,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:38:24,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:38:24,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:38:24,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:38:22" (1/3) ... [2021-11-12 22:38:24,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e86e9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:24, skipping insertion in model container [2021-11-12 22:38:24,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:23" (2/3) ... [2021-11-12 22:38:24,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e86e9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:38:24, skipping insertion in model container [2021-11-12 22:38:24,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:24" (3/3) ... [2021-11-12 22:38:24,560 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2021-11-12 22:38:24,565 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:38:24,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:38:24,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:38:24,565 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:38:24,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,613 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,619 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,620 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,621 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,624 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,625 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,626 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,627 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,633 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,634 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,644 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,644 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,647 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,659 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,659 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,659 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,659 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,659 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,660 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,660 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:38:24,679 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-12 22:38:24,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:38:24,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:38:24,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-12 22:38:24,748 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:38:24,761 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 204 transitions, 432 flow [2021-11-12 22:38:24,764 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 204 transitions, 432 flow [2021-11-12 22:38:24,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 204 transitions, 432 flow [2021-11-12 22:38:24,843 INFO L129 PetriNetUnfolder]: 18/201 cut-off events. [2021-11-12 22:38:24,843 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-12 22:38:24,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 201 events. 18/201 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2021-11-12 22:38:24,852 INFO L116 LiptonReduction]: Number of co-enabled transitions 1456 [2021-11-12 22:38:45,971 INFO L131 LiptonReduction]: Checked pairs total: 2271 [2021-11-12 22:38:45,971 INFO L133 LiptonReduction]: Total number of compositions: 214 [2021-11-12 22:38:45,980 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 32 transitions, 88 flow [2021-11-12 22:38:46,000 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:38:46,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:46,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:46,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:38:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2017729863, now seen corresponding path program 1 times [2021-11-12 22:38:46,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:46,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243097632] [2021-11-12 22:38:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:46,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:46,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:46,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:38:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:46,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:38:46,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:46,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:46,320 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:46,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243097632] [2021-11-12 22:38:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243097632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:46,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:38:46,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358954728] [2021-11-12 22:38:46,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:46,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:38:46,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:38:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:46,350 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 3.343065693430657) internal successors, (458), 137 states have internal predecessors, (458), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:46,511 INFO L93 Difference]: Finished difference Result 138 states and 428 transitions. [2021-11-12 22:38:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:38:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-12 22:38:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:46,526 INFO L225 Difference]: With dead ends: 138 [2021-11-12 22:38:46,526 INFO L226 Difference]: Without dead ends: 138 [2021-11-12 22:38:46,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:38:46,530 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.83ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:46,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 139.83ms Time] [2021-11-12 22:38:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-12 22:38:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-12 22:38:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 3.124087591240876) internal successors, (428), 137 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 428 transitions. [2021-11-12 22:38:46,582 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 428 transitions. Word has length 21 [2021-11-12 22:38:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:46,583 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 428 transitions. [2021-11-12 22:38:46,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 428 transitions. [2021-11-12 22:38:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:38:46,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:46,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:46,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:46,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:46,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:38:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash 190672365, now seen corresponding path program 1 times [2021-11-12 22:38:46,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:46,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771562821] [2021-11-12 22:38:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:46,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:46,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:46,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:46,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:38:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:38:46,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:47,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:47,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:47,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771562821] [2021-11-12 22:38:47,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771562821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:47,298 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:47,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:38:47,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092861144] [2021-11-12 22:38:47,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:47,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:38:47,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:38:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:38:47,301 INFO L87 Difference]: Start difference. First operand 138 states and 428 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:47,518 INFO L93 Difference]: Finished difference Result 174 states and 543 transitions. [2021-11-12 22:38:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:38:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 22:38:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:47,522 INFO L225 Difference]: With dead ends: 174 [2021-11-12 22:38:47,522 INFO L226 Difference]: Without dead ends: 174 [2021-11-12 22:38:47,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:38:47,524 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:47,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 57 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 201.98ms Time] [2021-11-12 22:38:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-12 22:38:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-12 22:38:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 3.138728323699422) internal successors, (543), 173 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 543 transitions. [2021-11-12 22:38:47,546 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 543 transitions. Word has length 22 [2021-11-12 22:38:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:47,547 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 543 transitions. [2021-11-12 22:38:47,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 543 transitions. [2021-11-12 22:38:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:38:47,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:47,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:47,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:47,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:47,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:38:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1929502307, now seen corresponding path program 2 times [2021-11-12 22:38:47,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:47,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406468150] [2021-11-12 22:38:47,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:38:47,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:47,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:38:47,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:38:47,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:47,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:38:47,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:48,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:48,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:48,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406468150] [2021-11-12 22:38:48,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406468150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:48,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:48,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:38:48,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944675809] [2021-11-12 22:38:48,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:48,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:38:48,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:38:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:48,187 INFO L87 Difference]: Start difference. First operand 174 states and 543 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:48,431 INFO L93 Difference]: Finished difference Result 205 states and 602 transitions. [2021-11-12 22:38:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:48,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-12 22:38:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:48,434 INFO L225 Difference]: With dead ends: 205 [2021-11-12 22:38:48,435 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 22:38:48,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:48,436 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:48,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 74 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 233.14ms Time] [2021-11-12 22:38:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 22:38:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-12 22:38:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 3.1264367816091956) internal successors, (544), 174 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 544 transitions. [2021-11-12 22:38:48,453 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 544 transitions. Word has length 22 [2021-11-12 22:38:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:48,453 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 544 transitions. [2021-11-12 22:38:48,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 544 transitions. [2021-11-12 22:38:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 22:38:48,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:48,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:48,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:48,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:48,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:38:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1118563851, now seen corresponding path program 1 times [2021-11-12 22:38:48,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:48,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620607946] [2021-11-12 22:38:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:48,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:48,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:48,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:38:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:48,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:38:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:38:49,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:38:49,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:38:49,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620607946] [2021-11-12 22:38:49,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620607946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:38:49,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:38:49,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:38:49,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108601513] [2021-11-12 22:38:49,106 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:38:49,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:38:49,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:38:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:38:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:38:49,107 INFO L87 Difference]: Start difference. First operand 175 states and 544 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:49,323 INFO L93 Difference]: Finished difference Result 249 states and 729 transitions. [2021-11-12 22:38:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:38:49,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 22:38:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:49,326 INFO L225 Difference]: With dead ends: 249 [2021-11-12 22:38:49,326 INFO L226 Difference]: Without dead ends: 176 [2021-11-12 22:38:49,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:38:49,328 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:49,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 188.72ms Time] [2021-11-12 22:38:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-12 22:38:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-12 22:38:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.1142857142857143) internal successors, (545), 175 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 545 transitions. [2021-11-12 22:38:49,343 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 545 transitions. Word has length 23 [2021-11-12 22:38:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:49,343 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 545 transitions. [2021-11-12 22:38:49,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 545 transitions. [2021-11-12 22:38:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:38:49,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:49,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:38:49,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:49,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:38:49,556 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:38:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -916316711, now seen corresponding path program 1 times [2021-11-12 22:38:49,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:38:49,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322968251] [2021-11-12 22:38:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:49,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:38:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:38:49,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:38:49,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:38:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:49,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:38:49,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:50,289 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-11-12 22:38:50,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-11-12 22:38:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:38:50,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:50,664 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-11-12 22:38:50,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2021-11-12 22:39:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:08,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:08,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322968251] [2021-11-12 22:39:08,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322968251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:08,581 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:08,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-12 22:39:08,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264125043] [2021-11-12 22:39:08,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:08,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:39:08,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:39:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:39:08,582 INFO L87 Difference]: Start difference. First operand 176 states and 545 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:09,150 INFO L93 Difference]: Finished difference Result 298 states and 861 transitions. [2021-11-12 22:39:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:39:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 22:39:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:09,153 INFO L225 Difference]: With dead ends: 298 [2021-11-12 22:39:09,154 INFO L226 Difference]: Without dead ends: 263 [2021-11-12 22:39:09,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:39:09,155 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 437.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 533.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:09,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 39 Invalid, 301 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 129 Unchecked, 533.66ms Time] [2021-11-12 22:39:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-12 22:39:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-11-12 22:39:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.003831417624521) internal successors, (784), 261 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 784 transitions. [2021-11-12 22:39:09,171 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 784 transitions. Word has length 24 [2021-11-12 22:39:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:09,171 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 784 transitions. [2021-11-12 22:39:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 784 transitions. [2021-11-12 22:39:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:39:09,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:09,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:09,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:09,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:09,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1749907557, now seen corresponding path program 2 times [2021-11-12 22:39:09,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:09,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566898079] [2021-11-12 22:39:09,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:39:09,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:09,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:09,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:09,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:39:09,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:39:09,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:39:09,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:39:09,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:09,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:09,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:09,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566898079] [2021-11-12 22:39:09,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566898079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:09,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:09,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:39:09,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232904213] [2021-11-12 22:39:09,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:09,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:39:09,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:39:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:09,695 INFO L87 Difference]: Start difference. First operand 262 states and 784 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:09,851 INFO L93 Difference]: Finished difference Result 226 states and 637 transitions. [2021-11-12 22:39:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:09,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 22:39:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:09,854 INFO L225 Difference]: With dead ends: 226 [2021-11-12 22:39:09,854 INFO L226 Difference]: Without dead ends: 226 [2021-11-12 22:39:09,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:39:09,855 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:09,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 60 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 150.58ms Time] [2021-11-12 22:39:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-12 22:39:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-11-12 22:39:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.831111111111111) internal successors, (637), 225 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 637 transitions. [2021-11-12 22:39:09,867 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 637 transitions. Word has length 24 [2021-11-12 22:39:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:09,867 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 637 transitions. [2021-11-12 22:39:09,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 637 transitions. [2021-11-12 22:39:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:39:09,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:09,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:09,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:10,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:10,082 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1324572859, now seen corresponding path program 1 times [2021-11-12 22:39:10,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:10,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676796875] [2021-11-12 22:39:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:10,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:10,084 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:10,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:39:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:10,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:39:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:10,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:10,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676796875] [2021-11-12 22:39:10,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676796875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895922755] [2021-11-12 22:39:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:10,706 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:39:10,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:39:10,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 22:39:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:39:10,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:11,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:11,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [895922755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:11,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664287412] [2021-11-12 22:39:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:11,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:11,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:11,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:39:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:11,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:39:11,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:11,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:11,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664287412] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:11,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:39:11,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 22:39:11,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195013371] [2021-11-12 22:39:11,720 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:11,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:39:11,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:11,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:39:11,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:39:11,721 INFO L87 Difference]: Start difference. First operand 226 states and 637 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:12,150 INFO L93 Difference]: Finished difference Result 398 states and 1057 transitions. [2021-11-12 22:39:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:39:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-12 22:39:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:12,154 INFO L225 Difference]: With dead ends: 398 [2021-11-12 22:39:12,154 INFO L226 Difference]: Without dead ends: 354 [2021-11-12 22:39:12,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:39:12,155 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 340.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 415.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:12,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 40 Invalid, 246 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 72 Unchecked, 415.63ms Time] [2021-11-12 22:39:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-12 22:39:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 258. [2021-11-12 22:39:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.7665369649805447) internal successors, (711), 257 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 711 transitions. [2021-11-12 22:39:12,167 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 711 transitions. Word has length 25 [2021-11-12 22:39:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:12,168 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 711 transitions. [2021-11-12 22:39:12,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 711 transitions. [2021-11-12 22:39:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:39:12,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:12,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:12,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:12,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:12,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-12 22:39:12,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:12,773 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2027854465, now seen corresponding path program 1 times [2021-11-12 22:39:12,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:12,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566721222] [2021-11-12 22:39:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:12,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:12,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:12,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:39:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:12,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:39:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:13,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:39:13,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566721222] [2021-11-12 22:39:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566721222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804361881] [2021-11-12 22:39:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:13,574 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:13,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:39:13,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:39:13,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:39:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:13,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:39:13,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:14,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:14,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1804361881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:14,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252839411] [2021-11-12 22:39:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:14,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:14,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:14,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:14,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:39:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:14,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:39:14,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:15,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:39:15,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252839411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:15,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:39:15,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 7, 6, 6] total 28 [2021-11-12 22:39:15,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671875347] [2021-11-12 22:39:15,750 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:15,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-12 22:39:15,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-12 22:39:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2021-11-12 22:39:15,751 INFO L87 Difference]: Start difference. First operand 258 states and 711 transitions. Second operand has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:18,089 INFO L93 Difference]: Finished difference Result 680 states and 1788 transitions. [2021-11-12 22:39:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:39:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-12 22:39:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:18,095 INFO L225 Difference]: With dead ends: 680 [2021-11-12 22:39:18,095 INFO L226 Difference]: Without dead ends: 499 [2021-11-12 22:39:18,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 22:39:18,096 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 317 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1316.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 1522.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:18,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 55 Invalid, 778 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [61 Valid, 523 Invalid, 0 Unknown, 194 Unchecked, 1522.10ms Time] [2021-11-12 22:39:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-12 22:39:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 413. [2021-11-12 22:39:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.8300970873786406) internal successors, (1166), 412 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1166 transitions. [2021-11-12 22:39:18,121 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1166 transitions. Word has length 25 [2021-11-12 22:39:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:18,122 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 1166 transitions. [2021-11-12 22:39:18,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.285714285714286) internal successors, (120), 28 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1166 transitions. [2021-11-12 22:39:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:39:18,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:18,124 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:18,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:18,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:18,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-12 22:39:18,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:18,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-12 22:39:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2064913805, now seen corresponding path program 2 times [2021-11-12 22:39:18,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:18,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274477999] [2021-11-12 22:39:18,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:39:18,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:18,740 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:18,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:39:18,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:39:18,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:39:18,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:39:18,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:18,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 376 [2021-11-12 22:39:19,179 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-11-12 22:39:19,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-11-12 22:43:09,842 WARN L227 SmtUtils]: Spent 3.74m on a formula simplification. DAG size of input: 375 DAG size of output: 124 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 22:43:09,843 INFO L354 Elim1Store]: treesize reduction 2076, result has 16.6 percent of original size [2021-11-12 22:43:09,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 121 treesize of output 457 [2021-11-12 22:46:22,484 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-12 22:46:22,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-12 22:46:22,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:46:22,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274477999] [2021-11-12 22:46:22,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-12 22:46:22,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140318937] [2021-11-12 22:46:22,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:46:22,487 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:46:22,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:46:22,488 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:46:22,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 22:46:23,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:46:23,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:46:23,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-12 22:46:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:23,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 22:46:23,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358731299] [2021-11-12 22:46:23,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:46:23,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:46:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:46:23,163 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:46:23,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 22:46:23,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:46:23,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:46:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-12 22:46:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:23,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-12 22:46:23,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:46:23,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 22:46:23,333 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 22:46:23,333 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 22:46:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-12 22:46:23,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-12 22:46:23,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-12 22:46:23,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-12 22:46:23,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:23,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:23,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:23,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535a45b3-c85e-41d3-a07a-4f920c67ef84/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:46:23,942 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2021-11-12 22:46:23,944 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 22:46:23,944 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:46:23,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:46:23 BasicIcfg [2021-11-12 22:46:23,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:46:23,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:46:24,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:46:24,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:46:24,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:38:24" (3/4) ... [2021-11-12 22:46:24,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:46:24,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:46:24,008 INFO L158 Benchmark]: Toolchain (without parser) took 481022.38ms. Allocated memory was 54.5MB in the beginning and 111.1MB in the end (delta: 56.6MB). Free memory was 31.2MB in the beginning and 81.0MB in the end (delta: -49.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,010 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 35.0MB in the beginning and 35.0MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:46:24,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.06ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 30.4MB in the end (delta: 575.1kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.77ms. Allocated memory is still 54.5MB. Free memory was 30.4MB in the beginning and 28.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,012 INFO L158 Benchmark]: Boogie Preprocessor took 55.60ms. Allocated memory is still 54.5MB. Free memory was 28.2MB in the beginning and 26.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,012 INFO L158 Benchmark]: RCFGBuilder took 1055.57ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 26.1MB in the beginning and 43.4MB in the end (delta: -17.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,023 INFO L158 Benchmark]: TraceAbstraction took 479435.23ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 43.2MB in the beginning and 81.0MB in the end (delta: -37.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-12 22:46:24,024 INFO L158 Benchmark]: Witness Printer took 22.71ms. Allocated memory is still 111.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:46:24,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 35.0MB in the beginning and 35.0MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.06ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 30.4MB in the end (delta: 575.1kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.77ms. Allocated memory is still 54.5MB. Free memory was 30.4MB in the beginning and 28.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.60ms. Allocated memory is still 54.5MB. Free memory was 28.2MB in the beginning and 26.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1055.57ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 26.1MB in the beginning and 43.4MB in the end (delta: -17.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * TraceAbstraction took 479435.23ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 43.2MB in the beginning and 81.0MB in the end (delta: -37.9MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 22.71ms. Allocated memory is still 111.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.2s, 196 PlacesBefore, 36 PlacesAfterwards, 204 TransitionsBefore, 32 TransitionsAfterwards, 1456 CoEnabledTransitionPairs, 8 FixpointIterations, 138 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 10 ConcurrentYvCompositions, 12 ChoiceCompositions, 214 TotalNumberOfCompositions, 2271 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1809, positive: 1735, positive conditional: 0, positive unconditional: 1735, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1037, positive: 1018, positive conditional: 0, positive unconditional: 1018, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1037, positive: 1012, positive conditional: 0, positive unconditional: 1012, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 989, positive: 311, positive conditional: 0, positive unconditional: 311, negative: 678, negative conditional: 0, negative unconditional: 678, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1809, positive: 717, positive conditional: 0, positive unconditional: 717, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 1037, unknown conditional: 0, unknown unconditional: 1037] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, 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 - UnprovableResult [Line: 126]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, s, t, n1, n2, N; [L103] 0 pthread_t t1, t2, t3; [L105] 0 N = __VERIFIER_nondet_int() [L106] 0 n1 = __VERIFIER_nondet_int() [L107] 0 n2 = __VERIFIER_nondet_int() [L108] 0 q1_front = __VERIFIER_nondet_int() [L109] 0 q1_back = q1_front [L110] 0 q2_front = __VERIFIER_nondet_int() [L111] 0 q2_back = q2_front [L112] CALL, EXPR 0 create_fresh_int_array(n1) [L132] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L132] RET 0 assume_abort_if_not(size >= 0) [L133] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND TRUE 0 !cond [L133] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L136] COND FALSE 0 !(i < size) [L139] 0 return arr; [L112] RET, EXPR 0 create_fresh_int_array(n1) [L112] 0 q1 = create_fresh_int_array(n1) [L113] CALL, EXPR 0 create_fresh_int_array(n2) [L132] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L132] RET 0 assume_abort_if_not(size >= 0) [L133] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L133] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L135] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L136] 0 int i = 0; [L136] COND TRUE 0 i < size [L137] 0 arr[i] = __VERIFIER_nondet_int() [L136] 0 i++ [L139] 0 return arr; [L113] RET, EXPR 0 create_fresh_int_array(n2) [L113] 0 q2 = create_fresh_int_array(n2) [L115] CALL 0 assume_abort_if_not(N >= 0) [L38] COND FALSE 0 !(!cond) [L115] RET 0 assume_abort_if_not(N >= 0) [L118] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L47] 1 int i=0; [L47] COND TRUE 1 i= 0 && q1_back < n1) [L38] COND FALSE 1 !(!cond) [L49] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L50] EXPR 1 q1[q1_back] [L50] CALL 1 assume_abort_if_not(q1[q1_back] == 1) [L38] COND FALSE 1 !(!cond) [L50] RET 1 assume_abort_if_not(q1[q1_back] == 1) [L51] 1 q1_back++ [L47] 1 i++ [L47] COND FALSE 1 !(i= 0 && q1_back < n1) [L38] COND TRUE 1 !cond [L55] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L56] EXPR 1 q1[q1_back] [L56] CALL 1 assume_abort_if_not(q1[q1_back] == 0) [L38] COND TRUE 1 !cond [L56] RET 1 assume_abort_if_not(q1[q1_back] == 0) [L57] 1 q1_back++ [L60] 1 return 0; [L119] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L120] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L121] 0 \read(t1) [L121] FCALL, JOIN 1 pthread_join(t1, 0) [L86] 3 int k; [L64] 2 int j; [L65] COND TRUE 2 1 [L67] CALL 2 assume_abort_if_not(q1_back > q1_front && q1_front >= 0 && q1_front < n1) [L38] COND FALSE 2 !(!cond) [L67] RET 2 assume_abort_if_not(q1_back > q1_front && q1_front >= 0 && q1_front < n1) [L68] EXPR 2 q1[q1_front] [L68] 2 j = q1[q1_front] [L69] 2 q1_front++ [L122] 0 \read(t2) [L72] CALL 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L38] COND FALSE 2 !(!cond) [L72] RET 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L73] EXPR 2 q2[q2_back] [L73] CALL 2 assume_abort_if_not(q2[q2_back] == j) [L38] COND TRUE 2 !cond [L73] RET 2 assume_abort_if_not(q2[q2_back] == j) [L74] 2 q2_back++ [L76] 2 s = s + j [L77] COND TRUE 2 j == 0 [L82] 2 return 0; [L122] FCALL, JOIN 2 pthread_join(t2, 0) [L123] 0 \read(t3) [L87] COND TRUE 3 1 [L89] CALL 3 assume_abort_if_not(q2_back > q2_front && q2_front >= 0 && q2_front < n2) [L38] COND TRUE 3 !cond [L89] RET 3 assume_abort_if_not(q2_back > q2_front && q2_front >= 0 && q2_front < n2) [L90] EXPR 3 q2[q2_front] [L90] 3 k = q2[q2_front] [L91] 3 q2_front++ [L93] 3 t = t + k [L94] COND TRUE 3 k == 0 [L99] 3 return 0; [L123] FCALL, JOIN 3 pthread_join(t3, 0) [L125] CALL 0 assume_abort_if_not(t != N) [L38] COND TRUE 0 !cond [L125] RET 0 assume_abort_if_not(t != N) [L126] 0 reach_error() - UnprovableResult [Line: 118]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 119]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 120]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 217 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 479.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 21.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 541 SdHoareTripleChecker+Valid, 3385.64ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 541 mSDsluCounter, 166 SdHoareTripleChecker+Invalid, 2867.80ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 395 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1121 IncrementalHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 32 mSDtfsCounter, 1121 mSolverCounterSat, 15.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 563 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=8, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 183 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 447.2s InterpolantComputationTime, 312 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 548 ConstructedInterpolants, 62 QuantifiedInterpolants, 4993 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1793 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 28/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN