./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:42:56,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:42:56,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:42:56,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:42:56,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:42:56,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:42:56,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:42:56,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:42:56,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:42:56,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:42:56,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:42:56,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:42:56,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:42:56,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:42:56,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:42:56,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:42:56,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:42:56,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:42:56,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:42:56,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:42:56,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:42:56,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:42:56,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:42:56,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:42:56,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:42:56,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:42:56,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:42:56,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:42:56,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:42:56,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:42:56,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:42:56,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:42:56,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:42:56,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:42:56,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:42:56,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:42:56,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:42:56,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:42:56,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:42:56,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:42:56,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:42:56,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:42:56,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:42:56,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:42:56,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:42:56,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:42:56,691 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:42:56,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:42:56,691 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:42:56,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:42:56,692 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:42:56,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:42:56,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:42:56,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:42:56,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:42:56,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:42:56,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:42:56,694 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:42:56,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:42:56,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:42:56,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:42:56,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:42:56,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:42:56,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:42:56,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:42:56,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:42:56,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:42:56,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:42:56,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:42:56,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:42:56,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:42:56,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:42:56,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:42:56,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:42:56,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:42:56,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:42:56,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:42:56,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:42:56,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:42:56,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:42:56,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:42:56,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:42:56,702 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_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2021-11-19 13:42:57,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:42:57,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:42:57,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:42:57,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:42:57,078 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:42:57,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-11-19 13:42:57,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/2a0378e7a/7c2057eaa5b64f8ea125c544afabaa0e/FLAG70e137ac5 [2021-11-19 13:42:57,866 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:42:57,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-11-19 13:42:57,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/2a0378e7a/7c2057eaa5b64f8ea125c544afabaa0e/FLAG70e137ac5 [2021-11-19 13:42:58,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/2a0378e7a/7c2057eaa5b64f8ea125c544afabaa0e [2021-11-19 13:42:58,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:42:58,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:42:58,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:58,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:42:58,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:42:58,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:58" (1/1) ... [2021-11-19 13:42:58,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7b75a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:58, skipping insertion in model container [2021-11-19 13:42:58,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:58" (1/1) ... [2021-11-19 13:42:58,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:42:58,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:42:58,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2021-11-19 13:42:58,585 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:42:58,602 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:42:58,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7114ad51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:58, skipping insertion in model container [2021-11-19 13:42:58,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:58,604 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:42:58,607 INFO L158 Benchmark]: Toolchain (without parser) took 408.37ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 62.3MB in the beginning and 102.8MB in the end (delta: -40.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:42:58,609 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:42:58,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.75ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 62.2MB in the beginning and 102.8MB in the end (delta: -40.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:42:58,615 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 96.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.75ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 62.2MB in the beginning and 102.8MB in the end (delta: -40.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 117]: 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_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:43:01,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:43:01,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:43:01,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:43:01,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:43:01,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:43:01,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:43:01,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:43:01,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:43:01,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:43:01,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:43:01,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:43:01,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:43:01,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:43:01,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:43:01,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:43:01,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:43:01,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:43:01,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:43:01,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:43:01,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:43:01,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:43:01,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:43:01,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:43:01,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:43:01,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:43:01,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:43:01,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:43:01,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:43:01,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:43:01,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:43:01,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:43:01,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:43:01,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:43:01,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:43:01,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:43:01,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:43:01,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:43:01,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:43:01,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:43:01,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:43:01,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:43:01,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:43:01,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:43:01,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:43:01,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:43:01,426 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:43:01,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:43:01,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:43:01,427 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:43:01,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:43:01,428 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:43:01,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:43:01,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:43:01,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:43:01,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:43:01,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:43:01,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:43:01,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:43:01,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:43:01,433 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:43:01,433 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:43:01,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:43:01,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:43:01,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:43:01,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:43:01,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:43:01,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:43:01,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:43:01,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:43:01,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:43:01,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:43:01,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:43:01,436 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:43:01,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:01,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:43:01,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:43:01,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:43:01,438 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_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2021-11-19 13:43:01,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:43:01,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:43:01,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:43:01,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:43:01,970 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:43:01,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-11-19 13:43:02,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/33599f964/7c6f33aeec9e4daa8d23572c97a510e3/FLAGb3d7864d6 [2021-11-19 13:43:02,663 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:43:02,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-11-19 13:43:02,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/33599f964/7c6f33aeec9e4daa8d23572c97a510e3/FLAGb3d7864d6 [2021-11-19 13:43:02,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/data/33599f964/7c6f33aeec9e4daa8d23572c97a510e3 [2021-11-19 13:43:02,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:43:02,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:43:02,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:43:02,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:43:02,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:43:02,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:02" (1/1) ... [2021-11-19 13:43:02,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e03d6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:02, skipping insertion in model container [2021-11-19 13:43:02,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:02" (1/1) ... [2021-11-19 13:43:02,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:43:03,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:43:03,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2021-11-19 13:43:03,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:43:03,251 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:43:03,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:43:03,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2021-11-19 13:43:03,285 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:43:03,291 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:43:03,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2021-11-19 13:43:03,333 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:43:03,360 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:43:03,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03 WrapperNode [2021-11-19 13:43:03,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:43:03,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:43:03,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:43:03,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:43:03,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,426 INFO L137 Inliner]: procedures = 28, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 268 [2021-11-19 13:43:03,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:43:03,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:43:03,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:43:03,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:43:03,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:43:03,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:43:03,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:43:03,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:43:03,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (1/1) ... [2021-11-19 13:43:03,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:43:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:03,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:43:03,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:43:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:43:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:43:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:43:03,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:43:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 13:43:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 13:43:03,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 13:43:03,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 13:43:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 13:43:03,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 13:43:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:43:03,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:43:03,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:43:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:43:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:43:03,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:43:03,776 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:43:03,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:43:04,564 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:43:04,584 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:43:04,585 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 13:43:04,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:04 BoogieIcfgContainer [2021-11-19 13:43:04,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:43:04,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:43:04,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:43:04,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:43:04,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:43:02" (1/3) ... [2021-11-19 13:43:04,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719f274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:04, skipping insertion in model container [2021-11-19 13:43:04,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:03" (2/3) ... [2021-11-19 13:43:04,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719f274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:04, skipping insertion in model container [2021-11-19 13:43:04,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:04" (3/3) ... [2021-11-19 13:43:04,599 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2021-11-19 13:43:04,606 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:43:04,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:43:04,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:43:04,607 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:43:04,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,673 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,674 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,686 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,687 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,691 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,691 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,691 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,700 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,702 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,702 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,702 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,702 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,703 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,703 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,703 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,704 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,705 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,705 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,706 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,707 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,708 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,709 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,710 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,711 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,712 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,713 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,714 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,715 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,716 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,717 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,718 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,719 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,720 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,721 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,722 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,723 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,723 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,723 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,723 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,724 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,724 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,724 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,724 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,725 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,725 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,725 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,725 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,726 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,726 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,726 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,731 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,731 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,731 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,732 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,733 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,733 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,733 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,734 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,734 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,734 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,734 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,735 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,735 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,735 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,740 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,741 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,742 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,742 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,743 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,743 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,743 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,744 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,744 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,744 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,745 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,745 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,745 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,745 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,746 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,746 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,746 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,747 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,748 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,749 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,749 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,749 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,750 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,750 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,750 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,750 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,751 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,751 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,751 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,751 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,752 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,752 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,752 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,756 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,756 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,756 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,757 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,757 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,757 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,757 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,758 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,758 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,758 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,758 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,759 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,759 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,759 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,759 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,760 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,760 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,760 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,763 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,764 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,765 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,766 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,767 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,767 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,767 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,768 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,768 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,768 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,768 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,769 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,770 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,770 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,770 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,771 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,771 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,771 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,771 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,772 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,772 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,772 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,772 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,773 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,773 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,773 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,773 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,776 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,776 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,776 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,776 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,777 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:43:04,799 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 13:43:04,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:43:04,886 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:43:04,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:43:04,909 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:43:04,925 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 341 transitions, 706 flow [2021-11-19 13:43:04,929 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 341 transitions, 706 flow [2021-11-19 13:43:04,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 323 places, 341 transitions, 706 flow [2021-11-19 13:43:05,091 INFO L129 PetriNetUnfolder]: 28/338 cut-off events. [2021-11-19 13:43:05,092 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 13:43:05,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 28/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 572 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2021-11-19 13:43:05,122 INFO L116 LiptonReduction]: Number of co-enabled transitions 17934 [2021-11-19 13:43:44,661 INFO L131 LiptonReduction]: Checked pairs total: 20124 [2021-11-19 13:43:44,661 INFO L133 LiptonReduction]: Total number of compositions: 383 [2021-11-19 13:43:44,672 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 40 transitions, 104 flow [2021-11-19 13:43:44,719 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:43:44,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:44,744 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] [2021-11-19 13:43:44,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:44,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash -734185911, now seen corresponding path program 1 times [2021-11-19 13:43:44,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:44,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657065003] [2021-11-19 13:43:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:44,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:44,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:44,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:43:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:45,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:43:45,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:45,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:46,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:46,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657065003] [2021-11-19 13:43:46,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657065003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:46,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:46,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-19 13:43:46,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600346841] [2021-11-19 13:43:46,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:46,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:46,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:46,230 INFO L87 Difference]: Start difference. First operand has 349 states, 348 states have (on average 3.5344827586206895) internal successors, (1230), 348 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:47,161 INFO L93 Difference]: Finished difference Result 675 states and 2321 transitions. [2021-11-19 13:43:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:47,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 [2021-11-19 13:43:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:47,200 INFO L225 Difference]: With dead ends: 675 [2021-11-19 13:43:47,200 INFO L226 Difference]: Without dead ends: 497 [2021-11-19 13:43:47,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:47,205 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:47,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 160 Unchecked, 0.8s Time] [2021-11-19 13:43:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-19 13:43:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 453. [2021-11-19 13:43:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 3.506637168141593) internal successors, (1585), 452 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1585 transitions. [2021-11-19 13:43:47,324 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1585 transitions. Word has length 22 [2021-11-19 13:43:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:47,325 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 1585 transitions. [2021-11-19 13:43:47,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1585 transitions. [2021-11-19 13:43:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 13:43:47,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:47,333 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] [2021-11-19 13:43:47,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:47,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:47,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash 735448670, now seen corresponding path program 1 times [2021-11-19 13:43:47,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:47,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640572980] [2021-11-19 13:43:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:47,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:47,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:47,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:47,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:43:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:47,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 13:43:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:48,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:49,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:49,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640572980] [2021-11-19 13:43:49,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640572980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:49,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1080263455] [2021-11-19 13:43:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:49,909 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:43:49,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:43:49,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-19 13:43:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:50,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:43:50,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:43:50,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:43:51,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1080263455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:51,502 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:43:51,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 21 [2021-11-19 13:43:51,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392680692] [2021-11-19 13:43:51,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:51,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:43:51,506 INFO L87 Difference]: Start difference. First operand 453 states and 1585 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:52,199 INFO L93 Difference]: Finished difference Result 807 states and 2757 transitions. [2021-11-19 13:43:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 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 [2021-11-19 13:43:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:52,210 INFO L225 Difference]: With dead ends: 807 [2021-11-19 13:43:52,211 INFO L226 Difference]: Without dead ends: 735 [2021-11-19 13:43:52,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:43:52,213 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:52,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 83 Unchecked, 0.5s Time] [2021-11-19 13:43:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-19 13:43:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 699. [2021-11-19 13:43:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 3.4068767908309456) internal successors, (2378), 698 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 2378 transitions. [2021-11-19 13:43:52,272 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 2378 transitions. Word has length 23 [2021-11-19 13:43:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:52,273 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 2378 transitions. [2021-11-19 13:43:52,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 2378 transitions. [2021-11-19 13:43:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 13:43:52,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:52,278 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] [2021-11-19 13:43:52,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:52,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-19 13:43:52,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:52,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:52,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1541885170, now seen corresponding path program 2 times [2021-11-19 13:43:52,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:52,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636524836] [2021-11-19 13:43:52,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:43:52,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:52,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:52,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:52,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:43:52,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:43:52,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:43:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:43:52,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:43:53,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:43:53,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:53,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636524836] [2021-11-19 13:43:53,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636524836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:53,586 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:53,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:43:53,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977160355] [2021-11-19 13:43:53,586 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:53,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:53,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:53,588 INFO L87 Difference]: Start difference. First operand 699 states and 2378 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:54,431 INFO L93 Difference]: Finished difference Result 1110 states and 3759 transitions. [2021-11-19 13:43:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 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 [2021-11-19 13:43:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:54,443 INFO L225 Difference]: With dead ends: 1110 [2021-11-19 13:43:54,443 INFO L226 Difference]: Without dead ends: 915 [2021-11-19 13:43:54,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:54,445 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:54,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 178 Unchecked, 0.7s Time] [2021-11-19 13:43:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-11-19 13:43:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 615. [2021-11-19 13:43:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 3.4413680781758957) internal successors, (2113), 614 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 2113 transitions. [2021-11-19 13:43:54,507 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 2113 transitions. Word has length 23 [2021-11-19 13:43:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:54,508 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 2113 transitions. [2021-11-19 13:43:54,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 2113 transitions. [2021-11-19 13:43:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 13:43:54,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:54,512 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] [2021-11-19 13:43:54,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:54,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:54,734 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1058891173, now seen corresponding path program 1 times [2021-11-19 13:43:54,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:54,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578501891] [2021-11-19 13:43:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:54,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:54,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:54,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:43:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:54,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:43:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:55,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:55,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:55,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578501891] [2021-11-19 13:43:55,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578501891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:55,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1568636896] [2021-11-19 13:43:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:55,997 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:55,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:43:55,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:43:56,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-19 13:43:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:56,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:43:56,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:56,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:57,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1568636896] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:57,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510993923] [2021-11-19 13:43:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:57,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:57,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:57,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:57,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:43:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:57,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:43:57,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:57,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:57,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510993923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:57,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:43:57,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 7, 7, 7] total 23 [2021-11-19 13:43:57,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319578062] [2021-11-19 13:43:57,813 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:43:57,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 13:43:57,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:43:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 13:43:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:43:57,815 INFO L87 Difference]: Start difference. First operand 615 states and 2113 transitions. Second operand has 24 states, 24 states have (on average 3.625) internal successors, (87), 23 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:07,685 INFO L93 Difference]: Finished difference Result 3271 states and 11058 transitions. [2021-11-19 13:44:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 13:44:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 23 states have internal predecessors, (87), 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 [2021-11-19 13:44:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:07,724 INFO L225 Difference]: With dead ends: 3271 [2021-11-19 13:44:07,724 INFO L226 Difference]: Without dead ends: 3055 [2021-11-19 13:44:07,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=559, Invalid=2197, Unknown=0, NotChecked=0, Total=2756 [2021-11-19 13:44:07,729 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 535 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 988 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:07,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 0 Invalid, 3247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2186 Invalid, 0 Unknown, 988 Unchecked, 7.1s Time] [2021-11-19 13:44:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2021-11-19 13:44:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 791. [2021-11-19 13:44:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 3.5139240506329115) internal successors, (2776), 790 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 2776 transitions. [2021-11-19 13:44:07,833 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 2776 transitions. Word has length 24 [2021-11-19 13:44:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:07,833 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 2776 transitions. [2021-11-19 13:44:07,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 23 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 2776 transitions. [2021-11-19 13:44:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 13:44:07,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:07,838 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] [2021-11-19 13:44:07,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-19 13:44:08,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:08,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:08,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:08,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 978314797, now seen corresponding path program 1 times [2021-11-19 13:44:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:08,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982874798] [2021-11-19 13:44:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:08,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:08,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:08,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:44:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:44:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:09,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:09,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:09,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982874798] [2021-11-19 13:44:09,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982874798] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:09,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1318976034] [2021-11-19 13:44:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:09,730 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:44:09,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:44:09,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 13:44:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:09,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:44:09,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:10,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:10,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1318976034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:10,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:44:10,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 19 [2021-11-19 13:44:10,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381794368] [2021-11-19 13:44:10,275 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:10,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:44:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:44:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:44:10,276 INFO L87 Difference]: Start difference. First operand 791 states and 2776 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:10,906 INFO L93 Difference]: Finished difference Result 1287 states and 4268 transitions. [2021-11-19 13:44:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:44:10,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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 25 [2021-11-19 13:44:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:10,920 INFO L225 Difference]: With dead ends: 1287 [2021-11-19 13:44:10,920 INFO L226 Difference]: Without dead ends: 1111 [2021-11-19 13:44:10,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:44:10,921 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:10,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:44:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-19 13:44:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1009. [2021-11-19 13:44:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 3.4692460317460316) internal successors, (3497), 1008 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 3497 transitions. [2021-11-19 13:44:10,968 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 3497 transitions. Word has length 25 [2021-11-19 13:44:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:10,969 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 3497 transitions. [2021-11-19 13:44:10,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 3497 transitions. [2021-11-19 13:44:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:44:10,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:10,974 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, 1] [2021-11-19 13:44:10,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:11,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-19 13:44:11,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:11,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1418994936, now seen corresponding path program 1 times [2021-11-19 13:44:11,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:11,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058231836] [2021-11-19 13:44:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:11,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:11,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:11,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:44:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:44:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:11,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:11,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:11,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058231836] [2021-11-19 13:44:11,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058231836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:11,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:11,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:44:11,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726889864] [2021-11-19 13:44:11,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:11,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:44:11,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:44:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:11,894 INFO L87 Difference]: Start difference. First operand 1009 states and 3497 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:12,533 INFO L93 Difference]: Finished difference Result 1132 states and 3807 transitions. [2021-11-19 13:44:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:44:12,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 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 26 [2021-11-19 13:44:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:12,549 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 13:44:12,550 INFO L226 Difference]: Without dead ends: 951 [2021-11-19 13:44:12,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:12,551 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:12,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:44:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-19 13:44:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2021-11-19 13:44:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 3.471578947368421) internal successors, (3298), 950 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 3298 transitions. [2021-11-19 13:44:12,595 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 3298 transitions. Word has length 26 [2021-11-19 13:44:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:12,596 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 3298 transitions. [2021-11-19 13:44:12,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 3298 transitions. [2021-11-19 13:44:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:44:12,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:12,601 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, 1] [2021-11-19 13:44:12,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:12,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:12,814 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:12,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1351469485, now seen corresponding path program 1 times [2021-11-19 13:44:12,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:12,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309678394] [2021-11-19 13:44:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:12,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:12,816 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:12,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:44:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:12,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:44:12,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:13,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:14,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:14,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309678394] [2021-11-19 13:44:14,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309678394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:14,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1538424647] [2021-11-19 13:44:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:14,323 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:44:14,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:44:14,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:44:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:44:14,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:44:14,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:44:14,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1538424647] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:14,914 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:44:14,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 19 [2021-11-19 13:44:14,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786351956] [2021-11-19 13:44:14,915 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:14,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:44:14,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:44:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:44:14,916 INFO L87 Difference]: Start difference. First operand 951 states and 3298 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:15,411 INFO L93 Difference]: Finished difference Result 951 states and 3244 transitions. [2021-11-19 13:44:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:44:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-19 13:44:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:15,437 INFO L225 Difference]: With dead ends: 951 [2021-11-19 13:44:15,437 INFO L226 Difference]: Without dead ends: 828 [2021-11-19 13:44:15,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:44:15,439 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:15,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:44:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-19 13:44:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2021-11-19 13:44:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 3.493349455864571) internal successors, (2889), 827 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:15,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2889 transitions. [2021-11-19 13:44:15,477 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2889 transitions. Word has length 26 [2021-11-19 13:44:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:15,478 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2889 transitions. [2021-11-19 13:44:15,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2889 transitions. [2021-11-19 13:44:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:44:15,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:15,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:15,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:15,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:15,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:15,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:15,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1861664311, now seen corresponding path program 2 times [2021-11-19 13:44:15,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:15,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733521898] [2021-11-19 13:44:15,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:44:15,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:15,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:15,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:15,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:44:16,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:44:16,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:16,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:44:16,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:44:17,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:44:18,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:18,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733521898] [2021-11-19 13:44:18,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733521898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:18,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:18,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 13:44:18,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098798071] [2021-11-19 13:44:18,786 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:18,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:44:18,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:44:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:44:18,787 INFO L87 Difference]: Start difference. First operand 828 states and 2889 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) [2021-11-19 13:44:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:21,141 INFO L93 Difference]: Finished difference Result 1709 states and 5931 transitions. [2021-11-19 13:44:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:44:21,141 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 26 [2021-11-19 13:44:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:21,160 INFO L225 Difference]: With dead ends: 1709 [2021-11-19 13:44:21,160 INFO L226 Difference]: Without dead ends: 1694 [2021-11-19 13:44:21,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:44:21,162 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 357 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:21,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 0 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 0 Unknown, 155 Unchecked, 1.2s Time] [2021-11-19 13:44:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-11-19 13:44:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 924. [2021-11-19 13:44:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 3.4431202600216686) internal successors, (3178), 923 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 3178 transitions. [2021-11-19 13:44:21,218 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 3178 transitions. Word has length 26 [2021-11-19 13:44:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:21,218 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 3178 transitions. [2021-11-19 13:44:21,219 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) [2021-11-19 13:44:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 3178 transitions. [2021-11-19 13:44:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:44:21,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:21,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:21,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:21,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:21,438 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1727675707, now seen corresponding path program 3 times [2021-11-19 13:44:21,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:21,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077170178] [2021-11-19 13:44:21,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:44:21,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:21,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:21,440 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:21,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:44:21,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:44:21,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:21,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:44:21,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:44:22,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:44:24,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:24,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077170178] [2021-11-19 13:44:24,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077170178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:24,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:24,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 13:44:24,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447728639] [2021-11-19 13:44:24,177 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:24,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:44:24,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:44:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:44:24,179 INFO L87 Difference]: Start difference. First operand 924 states and 3178 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) [2021-11-19 13:44:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:26,177 INFO L93 Difference]: Finished difference Result 2248 states and 7959 transitions. [2021-11-19 13:44:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:44:26,184 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 26 [2021-11-19 13:44:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:26,206 INFO L225 Difference]: With dead ends: 2248 [2021-11-19 13:44:26,206 INFO L226 Difference]: Without dead ends: 2234 [2021-11-19 13:44:26,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:44:26,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:26,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 221 Invalid, 0 Unknown, 135 Unchecked, 1.0s Time] [2021-11-19 13:44:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-11-19 13:44:26,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 946. [2021-11-19 13:44:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.4687830687830687) internal successors, (3278), 945 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3278 transitions. [2021-11-19 13:44:26,264 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3278 transitions. Word has length 26 [2021-11-19 13:44:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:26,265 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3278 transitions. [2021-11-19 13:44:26,265 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) [2021-11-19 13:44:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3278 transitions. [2021-11-19 13:44:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:44:26,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:26,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:26,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:26,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:26,489 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1859457143, now seen corresponding path program 4 times [2021-11-19 13:44:26,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:26,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274810269] [2021-11-19 13:44:26,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:44:26,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:26,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:26,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:44:26,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:44:26,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 13:44:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:27,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:44:28,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:28,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274810269] [2021-11-19 13:44:28,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274810269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:28,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1717624817] [2021-11-19 13:44:28,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:44:28,056 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:44:28,057 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:44:28,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:44:28,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:44:28,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:28,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:44:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:28,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:29,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1717624817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:29,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493694970] [2021-11-19 13:44:29,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:44:29,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:44:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:44:29,789 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:44:29,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 13:44:29,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:44:29,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:44:29,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 13:44:29,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:30,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:30,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493694970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:44:30,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:44:30,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9, 9, 9, 9] total 32 [2021-11-19 13:44:30,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351276128] [2021-11-19 13:44:30,605 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:44:30,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-19 13:44:30,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-19 13:44:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 13:44:30,607 INFO L87 Difference]: Start difference. First operand 946 states and 3278 transitions. Second operand has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:40,048 INFO L93 Difference]: Finished difference Result 5066 states and 17046 transitions. [2021-11-19 13:44:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 13:44:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 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 26 [2021-11-19 13:44:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:40,101 INFO L225 Difference]: With dead ends: 5066 [2021-11-19 13:44:40,101 INFO L226 Difference]: Without dead ends: 4776 [2021-11-19 13:44:40,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=790, Invalid=2750, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 13:44:40,103 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1182 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:40,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 0 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2424 Invalid, 0 Unknown, 170 Unchecked, 6.4s Time] [2021-11-19 13:44:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2021-11-19 13:44:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 951. [2021-11-19 13:44:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 3.46) internal successors, (3287), 950 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 3287 transitions. [2021-11-19 13:44:40,196 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 3287 transitions. Word has length 26 [2021-11-19 13:44:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:40,197 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 3287 transitions. [2021-11-19 13:44:40,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 32 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 3287 transitions. [2021-11-19 13:44:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:44:40,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:40,202 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, 1, 1] [2021-11-19 13:44:40,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:40,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:40,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-19 13:44:40,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:44:40,817 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1543544989, now seen corresponding path program 1 times [2021-11-19 13:44:40,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:40,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295772237] [2021-11-19 13:44:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:40,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:40,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:40,819 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:40,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:44:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:41,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 13:44:41,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:42,617 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:44:42,618 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 219 treesize of output 347 [2021-11-19 13:44:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:51,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:53,950 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:44:53,951 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 335 treesize of output 395 [2021-11-19 13:45:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:00,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295772237] [2021-11-19 13:45:00,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295772237] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:45:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [998110590] [2021-11-19 13:45:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:45:00,239 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:45:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:45:00,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:45:00,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 13:45:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:45:00,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:45:00,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:45:01,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:03,352 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:03,352 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 335 treesize of output 395 [2021-11-19 13:45:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:45:07,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [998110590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:45:07,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745071729] [2021-11-19 13:45:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:45:07,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:45:07,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:45:07,427 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:45:07,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 13:45:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:45:07,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 13:45:07,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:09,150 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:45:09,150 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 219 treesize of output 347 [2021-11-19 13:45:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:16,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:17,989 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:17,989 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 335 treesize of output 395 [2021-11-19 13:45:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:45:20,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745071729] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:45:20,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:45:20,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 10] total 39 [2021-11-19 13:45:20,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189723399] [2021-11-19 13:45:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:45:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:45:20,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:45:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:45:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1338, Unknown=1, NotChecked=0, Total=1560 [2021-11-19 13:45:20,448 INFO L87 Difference]: Start difference. First operand 951 states and 3287 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:45:23,924 INFO L93 Difference]: Finished difference Result 1996 states and 6930 transitions. [2021-11-19 13:45:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:45:23,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:45:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:45:23,935 INFO L225 Difference]: With dead ends: 1996 [2021-11-19 13:45:23,935 INFO L226 Difference]: Without dead ends: 1945 [2021-11-19 13:45:23,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=298, Invalid=1863, Unknown=1, NotChecked=0, Total=2162 [2021-11-19 13:45:23,936 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 208 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:45:23,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 13:45:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-11-19 13:45:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1027. [2021-11-19 13:45:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 3.4512670565302144) internal successors, (3541), 1026 states have internal predecessors, (3541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 3541 transitions. [2021-11-19 13:45:23,992 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 3541 transitions. Word has length 27 [2021-11-19 13:45:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:45:23,993 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 3541 transitions. [2021-11-19 13:45:23,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 3541 transitions. [2021-11-19 13:45:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:45:23,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:45:23,998 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, 1, 1] [2021-11-19 13:45:24,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:45:24,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:45:24,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-19 13:45:24,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:45:24,617 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:45:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:45:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1208991373, now seen corresponding path program 2 times [2021-11-19 13:45:24,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:45:24,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477547795] [2021-11-19 13:45:24,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:45:24,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:45:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:45:24,619 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:45:24,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:45:24,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:45:24,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:24,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:45:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:45:25,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:26,888 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:26,888 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 335 treesize of output 395 [2021-11-19 13:45:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:45:28,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:28,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477547795] [2021-11-19 13:45:28,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477547795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:45:28,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:45:28,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:45:28,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948704313] [2021-11-19 13:45:28,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:45:28,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:45:28,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:45:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:45:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:45:28,234 INFO L87 Difference]: Start difference. First operand 1027 states and 3541 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:45:29,647 INFO L93 Difference]: Finished difference Result 1507 states and 4826 transitions. [2021-11-19 13:45:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:45:29,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:45:29,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:45:29,652 INFO L225 Difference]: With dead ends: 1507 [2021-11-19 13:45:29,652 INFO L226 Difference]: Without dead ends: 1173 [2021-11-19 13:45:29,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:45:29,652 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 335 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:45:29,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 0 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 256 Invalid, 0 Unknown, 2 Unchecked, 1.0s Time] [2021-11-19 13:45:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-19 13:45:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 979. [2021-11-19 13:45:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 3.3803680981595092) internal successors, (3306), 978 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 3306 transitions. [2021-11-19 13:45:29,692 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 3306 transitions. Word has length 27 [2021-11-19 13:45:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:45:29,693 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 3306 transitions. [2021-11-19 13:45:29,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 3306 transitions. [2021-11-19 13:45:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:45:29,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:45:29,705 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, 1, 1] [2021-11-19 13:45:29,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:45:29,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:45:29,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:45:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:45:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1545627593, now seen corresponding path program 3 times [2021-11-19 13:45:29,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:45:29,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171494113] [2021-11-19 13:45:29,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:45:29,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:45:29,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:45:29,911 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:45:29,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 13:45:30,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:45:30,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:45:30,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:45:30,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:32,268 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:32,269 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 335 treesize of output 395 [2021-11-19 13:45:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:45:33,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:33,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171494113] [2021-11-19 13:45:33,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171494113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:45:33,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:45:33,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:45:33,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718500262] [2021-11-19 13:45:33,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:45:33,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:45:33,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:45:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:45:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:45:33,635 INFO L87 Difference]: Start difference. First operand 979 states and 3306 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:45:35,364 INFO L93 Difference]: Finished difference Result 1507 states and 4797 transitions. [2021-11-19 13:45:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:45:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:45:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:45:35,368 INFO L225 Difference]: With dead ends: 1507 [2021-11-19 13:45:35,369 INFO L226 Difference]: Without dead ends: 1277 [2021-11-19 13:45:35,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:45:35,370 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:45:35,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 387 Invalid, 0 Unknown, 59 Unchecked, 1.3s Time] [2021-11-19 13:45:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-19 13:45:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1005. [2021-11-19 13:45:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 1004 states have (on average 3.3207171314741037) internal successors, (3334), 1004 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 3334 transitions. [2021-11-19 13:45:35,412 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 3334 transitions. Word has length 27 [2021-11-19 13:45:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:45:35,412 INFO L470 AbstractCegarLoop]: Abstraction has 1005 states and 3334 transitions. [2021-11-19 13:45:35,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:45:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 3334 transitions. [2021-11-19 13:45:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:45:35,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:45:35,416 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, 1, 1] [2021-11-19 13:45:35,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:45:35,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:45:35,629 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:45:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:45:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2069527857, now seen corresponding path program 4 times [2021-11-19 13:45:35,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:45:35,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610815641] [2021-11-19 13:45:35,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:45:35,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:45:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:45:35,631 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:45:35,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:45:35,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:45:35,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:35,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 13:45:35,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:37,515 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:45:37,515 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 219 treesize of output 347 [2021-11-19 13:45:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:43,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:45,708 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:45,708 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 335 treesize of output 395 [2021-11-19 13:45:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:48,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:48,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610815641] [2021-11-19 13:45:48,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610815641] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:45:48,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586071503] [2021-11-19 13:45:48,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:45:48,352 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:45:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:45:48,353 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:45:48,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:45:48,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:45:48,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:48,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:45:48,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:45:49,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:51,201 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:45:51,202 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 335 treesize of output 395 [2021-11-19 13:45:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:45:53,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [586071503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:45:53,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144747939] [2021-11-19 13:45:53,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:45:53,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:45:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:45:53,598 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:45:53,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-19 13:45:53,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:45:53,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:45:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 13:45:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:57,364 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:45:57,365 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 219 treesize of output 347 [2021-11-19 13:46:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:12,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:14,197 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:46:14,198 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 335 treesize of output 395 [2021-11-19 13:46:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:46:16,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144747939] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:46:16,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:46:16,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 10] total 40 [2021-11-19 13:46:16,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994535252] [2021-11-19 13:46:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:46:16,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:46:16,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:46:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:46:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1409, Unknown=3, NotChecked=0, Total=1640 [2021-11-19 13:46:16,041 INFO L87 Difference]: Start difference. First operand 1005 states and 3334 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:46:21,350 INFO L93 Difference]: Finished difference Result 2086 states and 6988 transitions. [2021-11-19 13:46:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:46:21,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:46:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:46:21,361 INFO L225 Difference]: With dead ends: 2086 [2021-11-19 13:46:21,361 INFO L226 Difference]: Without dead ends: 2035 [2021-11-19 13:46:21,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=338, Invalid=2209, Unknown=3, NotChecked=0, Total=2550 [2021-11-19 13:46:21,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:46:21,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 13:46:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-19 13:46:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1005. [2021-11-19 13:46:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 1004 states have (on average 3.3157370517928286) internal successors, (3329), 1004 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 3329 transitions. [2021-11-19 13:46:21,421 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 3329 transitions. Word has length 27 [2021-11-19 13:46:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:46:21,421 INFO L470 AbstractCegarLoop]: Abstraction has 1005 states and 3329 transitions. [2021-11-19 13:46:21,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 3329 transitions. [2021-11-19 13:46:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:46:21,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:46:21,425 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, 1, 1] [2021-11-19 13:46:21,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:21,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:21,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-19 13:46:22,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:46:22,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:46:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:46:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1318721785, now seen corresponding path program 5 times [2021-11-19 13:46:22,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:46:22,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516036500] [2021-11-19 13:46:22,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:46:22,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:46:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:46:22,059 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:46:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 13:46:22,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:46:22,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:46:22,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 13:46:22,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:24,542 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:46:24,543 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 239 treesize of output 367 [2021-11-19 13:46:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:27,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:29,179 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:46:29,179 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 335 treesize of output 395 [2021-11-19 13:46:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:32,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:46:32,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516036500] [2021-11-19 13:46:32,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516036500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:46:32,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253045042] [2021-11-19 13:46:32,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:46:32,545 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:46:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:46:32,552 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:46:32,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-19 13:46:32,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:46:32,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:46:32,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:46:32,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:46:34,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:35,751 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:46:35,752 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 335 treesize of output 395 [2021-11-19 13:46:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:46:37,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253045042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:46:37,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194915786] [2021-11-19 13:46:37,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:46:37,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:46:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:46:37,999 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:46:38,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-19 13:46:38,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:46:38,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:46:38,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 13:46:38,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:39,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:40,952 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:46:40,952 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 335 treesize of output 395 [2021-11-19 13:46:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:46:43,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194915786] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:46:43,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:46:43,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 10] total 38 [2021-11-19 13:46:43,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976719617] [2021-11-19 13:46:43,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:46:43,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:46:43,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:46:43,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:46:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1260, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 13:46:43,997 INFO L87 Difference]: Start difference. First operand 1005 states and 3329 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:46:49,001 INFO L93 Difference]: Finished difference Result 2170 states and 7274 transitions. [2021-11-19 13:46:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:46:49,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:46:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:46:49,012 INFO L225 Difference]: With dead ends: 2170 [2021-11-19 13:46:49,012 INFO L226 Difference]: Without dead ends: 2085 [2021-11-19 13:46:49,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=340, Invalid=2012, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 13:46:49,014 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:46:49,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 13:46:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2021-11-19 13:46:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1021. [2021-11-19 13:46:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 3.347058823529412) internal successors, (3414), 1020 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 3414 transitions. [2021-11-19 13:46:49,072 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 3414 transitions. Word has length 27 [2021-11-19 13:46:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:46:49,073 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 3414 transitions. [2021-11-19 13:46:49,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 3414 transitions. [2021-11-19 13:46:49,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:46:49,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:46:49,077 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, 1, 1] [2021-11-19 13:46:49,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:49,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:49,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-19 13:46:49,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:46:49,685 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:46:49,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:46:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1984782423, now seen corresponding path program 6 times [2021-11-19 13:46:49,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:46:49,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480430567] [2021-11-19 13:46:49,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 13:46:49,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:46:49,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:46:49,688 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:46:49,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 13:46:49,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-19 13:46:49,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:46:49,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:46:49,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:46:50,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:52,337 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:46:52,338 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 335 treesize of output 395 [2021-11-19 13:46:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:46:53,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:46:53,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480430567] [2021-11-19 13:46:53,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480430567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:46:53,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:46:53,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:46:53,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682008787] [2021-11-19 13:46:53,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:46:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:46:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:46:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:46:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:46:53,862 INFO L87 Difference]: Start difference. First operand 1021 states and 3414 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:46:55,564 INFO L93 Difference]: Finished difference Result 1192 states and 3771 transitions. [2021-11-19 13:46:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:46:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:46:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:46:55,578 INFO L225 Difference]: With dead ends: 1192 [2021-11-19 13:46:55,578 INFO L226 Difference]: Without dead ends: 1157 [2021-11-19 13:46:55,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:46:55,579 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 221 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:46:55,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 288 Invalid, 0 Unknown, 39 Unchecked, 1.0s Time] [2021-11-19 13:46:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-19 13:46:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1099. [2021-11-19 13:46:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 3.2695810564663024) internal successors, (3590), 1098 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 3590 transitions. [2021-11-19 13:46:55,617 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 3590 transitions. Word has length 27 [2021-11-19 13:46:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:46:55,618 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 3590 transitions. [2021-11-19 13:46:55,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:46:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 3590 transitions. [2021-11-19 13:46:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:46:55,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:46:55,622 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, 1, 1] [2021-11-19 13:46:55,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:55,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:46:55,835 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:46:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:46:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash 785265465, now seen corresponding path program 7 times [2021-11-19 13:46:55,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:46:55,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43342359] [2021-11-19 13:46:55,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:46:55,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:46:55,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:46:55,837 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:46:55,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 13:46:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:46:56,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 13:46:56,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:58,027 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-11-19 13:46:58,028 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 239 treesize of output 367 [2021-11-19 13:47:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:02,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:04,843 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:04,844 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 335 treesize of output 395 [2021-11-19 13:47:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:08,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:08,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43342359] [2021-11-19 13:47:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43342359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:08,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953534741] [2021-11-19 13:47:08,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:47:08,067 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:47:08,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:47:08,068 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:47:08,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 13:47:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:08,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:47:08,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:09,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:11,157 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:11,158 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 335 treesize of output 395 [2021-11-19 13:47:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:13,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953534741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:13,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798786904] [2021-11-19 13:47:13,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 13:47:13,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:47:13,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:47:13,927 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:47:13,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-19 13:47:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:14,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 13:47:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:47:15,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:16,999 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:17,000 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 335 treesize of output 395 [2021-11-19 13:47:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:47:19,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798786904] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:47:19,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:47:19,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 7, 7, 11] total 39 [2021-11-19 13:47:19,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221577584] [2021-11-19 13:47:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:47:19,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:47:19,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:47:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:47:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 13:47:19,842 INFO L87 Difference]: Start difference. First operand 1099 states and 3590 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:24,879 INFO L93 Difference]: Finished difference Result 2366 states and 7749 transitions. [2021-11-19 13:47:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:47:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:47:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:24,892 INFO L225 Difference]: With dead ends: 2366 [2021-11-19 13:47:24,892 INFO L226 Difference]: Without dead ends: 2233 [2021-11-19 13:47:24,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=362, Invalid=2088, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 13:47:24,894 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:24,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 13:47:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-19 13:47:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1119. [2021-11-19 13:47:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.2737030411449015) internal successors, (3660), 1118 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3660 transitions. [2021-11-19 13:47:24,973 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3660 transitions. Word has length 27 [2021-11-19 13:47:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:24,974 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 3660 transitions. [2021-11-19 13:47:24,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3660 transitions. [2021-11-19 13:47:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:47:24,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:24,978 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, 1, 1] [2021-11-19 13:47:24,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:25,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:25,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-19 13:47:25,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:47:25,593 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:47:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 30053663, now seen corresponding path program 8 times [2021-11-19 13:47:25,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:25,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090064094] [2021-11-19 13:47:25,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:47:25,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:25,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:25,595 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:25,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 13:47:25,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:47:25,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:47:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:47:25,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:47:26,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:28,096 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:28,097 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 335 treesize of output 395 [2021-11-19 13:47:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:47:29,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:29,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090064094] [2021-11-19 13:47:29,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090064094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:47:29,392 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:47:29,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 13:47:29,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475029069] [2021-11-19 13:47:29,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:47:29,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:47:29,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:47:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:47:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:47:29,394 INFO L87 Difference]: Start difference. First operand 1119 states and 3660 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:31,318 INFO L93 Difference]: Finished difference Result 1227 states and 3839 transitions. [2021-11-19 13:47:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:47:31,319 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-19 13:47:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:31,321 INFO L225 Difference]: With dead ends: 1227 [2021-11-19 13:47:31,321 INFO L226 Difference]: Without dead ends: 995 [2021-11-19 13:47:31,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:47:31,322 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:31,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 416 Invalid, 0 Unknown, 1 Unchecked, 1.4s Time] [2021-11-19 13:47:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-11-19 13:47:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 935. [2021-11-19 13:47:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 3.392933618843683) internal successors, (3169), 934 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 3169 transitions. [2021-11-19 13:47:31,371 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 3169 transitions. Word has length 27 [2021-11-19 13:47:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:31,371 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 3169 transitions. [2021-11-19 13:47:31,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 3169 transitions. [2021-11-19 13:47:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:47:31,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:31,375 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, 1, 1, 1] [2021-11-19 13:47:31,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:31,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:47:31,598 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:47:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1309965453, now seen corresponding path program 1 times [2021-11-19 13:47:31,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:31,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104599853] [2021-11-19 13:47:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:47:31,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:31,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:31,600 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:31,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 13:47:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:31,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:47:31,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:32,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:32,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:32,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104599853] [2021-11-19 13:47:32,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104599853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:32,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690405448] [2021-11-19 13:47:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:47:32,944 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:47:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:47:32,945 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:47:32,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-19 13:47:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:47:33,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:33,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690405448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:34,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683173925] [2021-11-19 13:47:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:47:34,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:47:34,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:47:34,364 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:47:34,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-19 13:47:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:47:34,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:47:34,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:47:35,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683173925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:47:35,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:47:35,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 9, 8] total 29 [2021-11-19 13:47:35,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153762326] [2021-11-19 13:47:35,393 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:47:35,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 13:47:35,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:47:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 13:47:35,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:47:35,395 INFO L87 Difference]: Start difference. First operand 935 states and 3169 transitions. Second operand has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:40,993 INFO L93 Difference]: Finished difference Result 4060 states and 13559 transitions. [2021-11-19 13:47:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 13:47:40,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 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 28 [2021-11-19 13:47:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:41,003 INFO L225 Difference]: With dead ends: 4060 [2021-11-19 13:47:41,003 INFO L226 Difference]: Without dead ends: 4056 [2021-11-19 13:47:41,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=585, Invalid=1485, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 13:47:41,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 730 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 597 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:41,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 0 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1111 Invalid, 0 Unknown, 597 Unchecked, 3.7s Time] [2021-11-19 13:47:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-11-19 13:47:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 1787. [2021-11-19 13:47:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 3.4204927211646137) internal successors, (6109), 1786 states have internal predecessors, (6109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 6109 transitions. [2021-11-19 13:47:41,126 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 6109 transitions. Word has length 28 [2021-11-19 13:47:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:41,126 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 6109 transitions. [2021-11-19 13:47:41,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 6109 transitions. [2021-11-19 13:47:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:47:41,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:41,132 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, 1, 1, 1] [2021-11-19 13:47:41,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2021-11-19 13:47:41,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:41,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:41,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:47:41,735 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:47:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1402135583, now seen corresponding path program 2 times [2021-11-19 13:47:41,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:41,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751100429] [2021-11-19 13:47:41,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:47:41,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:41,737 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:41,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-19 13:47:41,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 13:47:41,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:47:41,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:47:41,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:47:42,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:44,833 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:44,834 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 335 treesize of output 395 [2021-11-19 13:47:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:47:46,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:46,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751100429] [2021-11-19 13:47:46,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751100429] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:47:46,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:47:46,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 17 [2021-11-19 13:47:46,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725355455] [2021-11-19 13:47:46,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:47:46,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:47:46,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:47:46,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:47:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:47:46,603 INFO L87 Difference]: Start difference. First operand 1787 states and 6109 transitions. Second operand has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:51,869 INFO L93 Difference]: Finished difference Result 4687 states and 16959 transitions. [2021-11-19 13:47:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 13:47:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 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 28 [2021-11-19 13:47:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:51,883 INFO L225 Difference]: With dead ends: 4687 [2021-11-19 13:47:51,883 INFO L226 Difference]: Without dead ends: 4555 [2021-11-19 13:47:51,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 13:47:51,885 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 438 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:51,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 0 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 805 Invalid, 0 Unknown, 28 Unchecked, 3.4s Time] [2021-11-19 13:47:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-11-19 13:47:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 1674. [2021-11-19 13:47:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 3.371787208607292) internal successors, (5641), 1673 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 5641 transitions. [2021-11-19 13:47:51,982 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 5641 transitions. Word has length 28 [2021-11-19 13:47:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:51,982 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 5641 transitions. [2021-11-19 13:47:51,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:47:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 5641 transitions. [2021-11-19 13:47:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:47:51,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:51,989 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, 1, 1, 1] [2021-11-19 13:47:52,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:52,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:47:52,194 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:47:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -111620163, now seen corresponding path program 3 times [2021-11-19 13:47:52,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:52,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976064661] [2021-11-19 13:47:52,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:47:52,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:52,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:52,197 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:52,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 13:47:52,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 13:47:52,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:47:52,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:47:52,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:47:53,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:47:54,924 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-11-19 13:47:54,925 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 335 treesize of output 395 [2021-11-19 13:47:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:47:58,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:47:58,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976064661] [2021-11-19 13:47:58,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976064661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:47:58,322 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:47:58,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 17 [2021-11-19 13:47:58,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381552897] [2021-11-19 13:47:58,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:47:58,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:47:58,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:47:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:47:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:47:58,323 INFO L87 Difference]: Start difference. First operand 1674 states and 5641 transitions. Second operand has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:48:02,038 INFO L93 Difference]: Finished difference Result 3403 states and 11369 transitions. [2021-11-19 13:48:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:48:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 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 28 [2021-11-19 13:48:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:48:02,047 INFO L225 Difference]: With dead ends: 3403 [2021-11-19 13:48:02,047 INFO L226 Difference]: Without dead ends: 3281 [2021-11-19 13:48:02,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2021-11-19 13:48:02,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 374 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:48:02,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 738 Invalid, 0 Unknown, 117 Unchecked, 2.8s Time] [2021-11-19 13:48:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-11-19 13:48:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1634. [2021-11-19 13:48:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.378444580526638) internal successors, (5517), 1633 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5517 transitions. [2021-11-19 13:48:02,131 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5517 transitions. Word has length 28 [2021-11-19 13:48:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:48:02,131 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5517 transitions. [2021-11-19 13:48:02,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5517 transitions. [2021-11-19 13:48:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 13:48:02,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:48:02,136 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, 1, 1, 1] [2021-11-19 13:48:02,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-19 13:48:02,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:48:02,337 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:48:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:48:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1178146181, now seen corresponding path program 4 times [2021-11-19 13:48:02,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:48:02,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297503992] [2021-11-19 13:48:02,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:48:02,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:48:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:48:02,338 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:48:02,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-19 13:48:02,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:48:02,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:02,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:48:02,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:48:03,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:48:03,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:48:03,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297503992] [2021-11-19 13:48:03,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297503992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:03,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1237186225] [2021-11-19 13:48:03,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:48:03,733 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:48:03,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:48:03,734 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:48:03,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-19 13:48:03,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:48:03,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:03,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:48:03,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:48:04,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:48:05,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1237186225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:05,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998832867] [2021-11-19 13:48:05,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:48:05,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:48:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:48:05,217 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:48:05,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-19 13:48:05,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:48:05,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:05,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:48:05,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:48:05,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:48:06,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998832867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:06,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:48:06,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 9, 8] total 29 [2021-11-19 13:48:06,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213682114] [2021-11-19 13:48:06,388 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:48:06,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 13:48:06,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:48:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 13:48:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:48:06,390 INFO L87 Difference]: Start difference. First operand 1634 states and 5517 transitions. Second operand has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:48:13,614 INFO L93 Difference]: Finished difference Result 4127 states and 13709 transitions. [2021-11-19 13:48:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 13:48:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 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 28 [2021-11-19 13:48:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:48:13,646 INFO L225 Difference]: With dead ends: 4127 [2021-11-19 13:48:13,646 INFO L226 Difference]: Without dead ends: 4002 [2021-11-19 13:48:13,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=820, Invalid=2486, Unknown=0, NotChecked=0, Total=3306 [2021-11-19 13:48:13,648 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 919 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1234 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:48:13,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 0 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1196 Invalid, 0 Unknown, 1234 Unchecked, 3.9s Time] [2021-11-19 13:48:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2021-11-19 13:48:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 1543. [2021-11-19 13:48:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.3385214007782102) internal successors, (5148), 1542 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 5148 transitions. [2021-11-19 13:48:13,701 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 5148 transitions. Word has length 28 [2021-11-19 13:48:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:48:13,702 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 5148 transitions. [2021-11-19 13:48:13,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:48:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 5148 transitions. [2021-11-19 13:48:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:48:13,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:48:13,706 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:48:13,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-19 13:48:13,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-19 13:48:14,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-11-19 13:48:14,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:48:14,308 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:48:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:48:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1249610160, now seen corresponding path program 5 times [2021-11-19 13:48:14,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:48:14,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317254526] [2021-11-19 13:48:14,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:48:14,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:48:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:48:14,311 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:48:14,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-19 13:48:14,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-19 13:48:14,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:14,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 13:48:14,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:15,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:16,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:48:16,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317254526] [2021-11-19 13:48:16,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317254526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:16,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [320917130] [2021-11-19 13:48:16,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:48:16,432 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:48:16,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:48:16,433 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:48:16,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-19 13:48:18,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-19 13:48:18,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:18,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:48:18,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:19,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:21,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [320917130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:21,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782718516] [2021-11-19 13:48:21,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:48:21,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:48:21,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:48:21,081 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:48:21,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-19 13:48:28,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-19 13:48:28,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:48:28,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:48:28,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:48:29,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:48:30,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782718516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:48:30,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:48:30,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 7, 7] total 51 [2021-11-19 13:48:30,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267231758] [2021-11-19 13:48:30,631 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:48:30,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-19 13:48:30,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:48:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-19 13:48:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=2063, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 13:48:30,634 INFO L87 Difference]: Start difference. First operand 1543 states and 5148 transitions. Second operand has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 51 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:49:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:49:02,428 INFO L93 Difference]: Finished difference Result 4847 states and 16666 transitions. [2021-11-19 13:49:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-19 13:49:02,429 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 51 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-19 13:49:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:49:02,441 INFO L225 Difference]: With dead ends: 4847 [2021-11-19 13:49:02,441 INFO L226 Difference]: Without dead ends: 4321 [2021-11-19 13:49:02,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1255, Invalid=4907, Unknown=0, NotChecked=0, Total=6162 [2021-11-19 13:49:02,444 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 811 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:49:02,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 0 Invalid, 3449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 2925 Invalid, 0 Unknown, 263 Unchecked, 18.9s Time] [2021-11-19 13:49:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2021-11-19 13:49:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 1456. [2021-11-19 13:49:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.3422680412371135) internal successors, (4863), 1455 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:49:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4863 transitions. [2021-11-19 13:49:02,507 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4863 transitions. Word has length 29 [2021-11-19 13:49:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:49:02,508 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 4863 transitions. [2021-11-19 13:49:02,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 51 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:49:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4863 transitions. [2021-11-19 13:49:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 13:49:02,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:49:02,513 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, 1, 1, 1, 1, 1] [2021-11-19 13:49:02,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2021-11-19 13:49:02,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-19 13:49:02,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-19 13:49:03,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:49:03,119 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:49:03,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:49:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1474248378, now seen corresponding path program 1 times [2021-11-19 13:49:03,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:49:03,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570237780] [2021-11-19 13:49:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:49:03,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:49:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:49:03,122 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:49:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-19 13:49:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:49:03,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:49:03,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:49:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:49:03,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:49:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:49:04,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:49:04,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570237780] [2021-11-19 13:49:04,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570237780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:49:04,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653944498] [2021-11-19 13:49:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:49:04,646 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:49:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:49:04,647 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:49:04,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-11-19 13:49:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:49:04,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:49:04,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:49:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:49:05,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:49:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:49:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1653944498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:49:06,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608012825] [2021-11-19 13:49:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:49:06,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:49:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:49:06,452 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:49:06,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-19 13:49:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:49:06,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:49:06,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:49:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:49:07,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:49:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:49:08,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608012825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:49:08,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:49:08,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 9, 10] total 30 [2021-11-19 13:49:08,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240884663] [2021-11-19 13:49:08,603 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:49:08,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 13:49:08,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:49:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 13:49:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:49:08,605 INFO L87 Difference]: Start difference. First operand 1456 states and 4863 transitions. Second operand has 31 states, 30 states have (on average 4.0) internal successors, (120), 31 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) [2021-11-19 13:49:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:49:12,778 INFO L93 Difference]: Finished difference Result 4904 states and 17532 transitions. [2021-11-19 13:49:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 13:49:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.0) internal successors, (120), 31 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 30 [2021-11-19 13:49:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:49:12,791 INFO L225 Difference]: With dead ends: 4904 [2021-11-19 13:49:12,791 INFO L226 Difference]: Without dead ends: 4774 [2021-11-19 13:49:12,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 150 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=539, Invalid=1441, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 13:49:12,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 748 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1032 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:49:12,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 0 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 658 Invalid, 0 Unknown, 1032 Unchecked, 2.7s Time] [2021-11-19 13:49:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-11-19 13:49:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 2191. [2021-11-19 13:49:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2190 states have (on average 3.5561643835616437) internal successors, (7788), 2190 states have internal predecessors, (7788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:49:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 7788 transitions. [2021-11-19 13:49:12,887 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 7788 transitions. Word has length 30 [2021-11-19 13:49:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:49:12,887 INFO L470 AbstractCegarLoop]: Abstraction has 2191 states and 7788 transitions. [2021-11-19 13:49:12,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.0) internal successors, (120), 31 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) [2021-11-19 13:49:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 7788 transitions. [2021-11-19 13:49:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 13:49:12,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:49:12,895 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, 1, 1, 1, 1, 1] [2021-11-19 13:49:12,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-19 13:49:13,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2021-11-19 13:49:13,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-19 13:49:13,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:49:13,511 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:49:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:49:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1928931046, now seen corresponding path program 2 times [2021-11-19 13:49:13,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:49:13,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68220125] [2021-11-19 13:49:13,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:49:13,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:49:13,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:49:13,513 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:49:13,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6395e6e-7e16-4d94-9d91-87178c6f0c04/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-19 13:49:13,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:49:13,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:49:13,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 13:49:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:49:23,538 INFO L354 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2021-11-19 13:49:23,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 349 treesize of output 203 [2021-11-19 13:49:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:49:36,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:50:03,503 WARN L227 SmtUtils]: Spent 22.28s on a formula simplification. DAG size of input: 813 DAG size of output: 537 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:50:03,512 INFO L354 Elim1Store]: treesize reduction 1218, result has 59.0 percent of original size [2021-11-19 13:50:03,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 458 treesize of output 1980