./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:54,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:54,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:54,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:54,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:54,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:54,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:54,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:54,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:54,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:54,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:54,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:54,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:54,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:54,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:54,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:54,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:54,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:54,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:54,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:54,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:54,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:54,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:54,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:54,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:54,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:54,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:54,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:54,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:54,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:54,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:54,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:54,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:54,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:54,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:54,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:54,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:54,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:54,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:54,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:54,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:54,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-12 22:56:54,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:54,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:54,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:54,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:54,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:54,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:54,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:54,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:56:54,342 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:54,342 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:54,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:56:54,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:56:54,343 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:54,343 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:56:54,343 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:56:54,343 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:56:54,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:56:54,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:56:54,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:56:54,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:56:54,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:54,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:54,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:54,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:54,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:54,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:54,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:54,347 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:56:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:56:54,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:54,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:54,348 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_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-12 22:56:54,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:54,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:54,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:54,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:54,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:54,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-12 22:56:54,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/cf9377757/36b7a67fca1a41b88a60d185587ff538/FLAG083fa02d1 [2021-11-12 22:56:55,315 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:56:55,316 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-12 22:56:55,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/cf9377757/36b7a67fca1a41b88a60d185587ff538/FLAG083fa02d1 [2021-11-12 22:56:55,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/cf9377757/36b7a67fca1a41b88a60d185587ff538 [2021-11-12 22:56:55,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:56:55,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:56:55,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:55,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:56:55,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:56:55,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:55" (1/1) ... [2021-11-12 22:56:55,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0a3892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:55, skipping insertion in model container [2021-11-12 22:56:55,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:55" (1/1) ... [2021-11-12 22:56:55,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:56:55,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:56,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:56,435 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:56:56,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78446a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:56, skipping insertion in model container [2021-11-12 22:56:56,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:56,436 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:56:56,438 INFO L158 Benchmark]: Toolchain (without parser) took 864.32ms. Allocated memory is still 88.1MB. Free memory was 65.7MB in the beginning and 55.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:56:56,439 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:56:56,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 861.97ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 55.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:56:56,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 64.3MB in the beginning and 64.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 861.97ms. Allocated memory is still 88.1MB. Free memory was 65.5MB in the beginning and 55.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1162]: 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_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:58,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:58,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:58,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:58,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:58,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:58,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:58,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:58,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:58,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:58,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:58,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:58,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:58,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:58,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:58,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:58,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:58,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:58,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:58,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:58,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:58,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:58,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:58,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:58,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:58,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:58,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:58,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:58,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:58,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:58,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:58,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:58,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:58,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:58,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:58,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:58,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:58,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:58,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:58,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:58,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:58,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-12 22:56:58,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:58,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:58,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:58,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:58,879 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:58,879 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:58,879 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:58,879 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:58,880 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:58,880 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:58,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:56:58,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:56:58,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:58,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:56:58,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:56:58,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:58,884 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:56:58,884 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:56:58,884 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:56:58,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:58,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:58,885 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:56:58,885 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:56:58,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:58,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:58,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:56:58,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:58,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:58,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:58,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:58,888 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:56:58,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:56:58,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:58,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:58,889 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_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-12 22:56:59,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:59,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:59,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:59,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:59,338 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:59,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-12 22:56:59,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/6171dc8a9/870b53243cc14685ba92fb3422365df7/FLAG09da0d07c [2021-11-12 22:57:00,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:57:00,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-12 22:57:00,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/6171dc8a9/870b53243cc14685ba92fb3422365df7/FLAG09da0d07c [2021-11-12 22:57:00,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/data/6171dc8a9/870b53243cc14685ba92fb3422365df7 [2021-11-12 22:57:00,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:57:00,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:57:00,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:00,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:57:00,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:57:00,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:00" (1/1) ... [2021-11-12 22:57:00,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:00, skipping insertion in model container [2021-11-12 22:57:00,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:57:00" (1/1) ... [2021-11-12 22:57:00,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:57:00,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:57:01,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:01,290 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:57:01,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:57:01,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:01,419 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:57:01,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:57:01,571 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:57:01,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01 WrapperNode [2021-11-12 22:57:01,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:57:01,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:01,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:57:01,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:57:01,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:57:01,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:57:01,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:57:01,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:57:01,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:57:01,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:57:01,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:57:01,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:57:01,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (1/1) ... [2021-11-12 22:57:01,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:57:01,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:01,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:57:01,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:57:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:57:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:57:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:57:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:57:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:57:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:57:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:57:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:57:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-12 22:57:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:57:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-12 22:57:01,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:57:01,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:57:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:57:03,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:57:03,536 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-12 22:57:03,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:03 BoogieIcfgContainer [2021-11-12 22:57:03,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:57:03,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:57:03,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:57:03,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:57:03,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:57:00" (1/3) ... [2021-11-12 22:57:03,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54dac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:03, skipping insertion in model container [2021-11-12 22:57:03,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:57:01" (2/3) ... [2021-11-12 22:57:03,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54dac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:03, skipping insertion in model container [2021-11-12 22:57:03,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:03" (3/3) ... [2021-11-12 22:57:03,545 INFO L111 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2021-11-12 22:57:03,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:57:03,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2021-11-12 22:57:03,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:57:03,602 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:57:03,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2021-11-12 22:57:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:57:03,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:03,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:57:03,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:03,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:03,632 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-12 22:57:03,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:03,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482237982] [2021-11-12 22:57:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:03,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:03,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:03,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:57:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:03,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:03,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:03,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:03,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:03,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482237982] [2021-11-12 22:57:03,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482237982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:03,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:03,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:57:03,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748343029] [2021-11-12 22:57:03,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:03,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:04,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:04,039 INFO L87 Difference]: Start difference. First operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:04,846 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2021-11-12 22:57:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-12 22:57:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:04,864 INFO L225 Difference]: With dead ends: 195 [2021-11-12 22:57:04,864 INFO L226 Difference]: Without dead ends: 193 [2021-11-12 22:57:04,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:04,869 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 170 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 678.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.12ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 763.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 152 Invalid, 86 Unknown, 0 Unchecked, 6.12ms Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 763.23ms Time] [2021-11-12 22:57:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-12 22:57:04,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2021-11-12 22:57:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.8557692307692308) internal successors, (193), 174 states have internal predecessors, (193), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 195 transitions. [2021-11-12 22:57:04,920 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 195 transitions. Word has length 3 [2021-11-12 22:57:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:04,921 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 195 transitions. [2021-11-12 22:57:04,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 195 transitions. [2021-11-12 22:57:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:57:04,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:04,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:57:04,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:05,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:05,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-12 22:57:05,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:05,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579102168] [2021-11-12 22:57:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:05,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:05,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:05,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:05,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:57:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:05,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:57:05,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:05,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:05,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:05,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:05,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579102168] [2021-11-12 22:57:05,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579102168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:05,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:05,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:57:05,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957243928] [2021-11-12 22:57:05,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:05,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:57:05,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:57:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:05,453 INFO L87 Difference]: Start difference. First operand 177 states and 195 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:07,160 INFO L93 Difference]: Finished difference Result 176 states and 194 transitions. [2021-11-12 22:57:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:07,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-12 22:57:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:07,163 INFO L225 Difference]: With dead ends: 176 [2021-11-12 22:57:07,163 INFO L226 Difference]: Without dead ends: 176 [2021-11-12 22:57:07,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:07,165 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 9 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1532.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1687.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:07,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 423 Invalid, 137 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1687.18ms Time] [2021-11-12 22:57:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-12 22:57:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-12 22:57:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 104 states have (on average 1.8461538461538463) internal successors, (192), 173 states have internal predecessors, (192), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 194 transitions. [2021-11-12 22:57:07,181 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 194 transitions. Word has length 3 [2021-11-12 22:57:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:07,181 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 194 transitions. [2021-11-12 22:57:07,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 194 transitions. [2021-11-12 22:57:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:57:07,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:07,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:57:07,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:07,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:07,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-12 22:57:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:07,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94912345] [2021-11-12 22:57:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:07,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:07,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:07,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:07,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:57:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:07,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:57:07,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:07,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:07,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:08,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:08,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94912345] [2021-11-12 22:57:08,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94912345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:08,125 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:08,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:57:08,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412250567] [2021-11-12 22:57:08,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:08,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:57:08,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:57:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:57:08,127 INFO L87 Difference]: Start difference. First operand 176 states and 194 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:10,938 INFO L93 Difference]: Finished difference Result 185 states and 205 transitions. [2021-11-12 22:57:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:57:10,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2021-11-12 22:57:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:10,941 INFO L225 Difference]: With dead ends: 185 [2021-11-12 22:57:10,941 INFO L226 Difference]: Without dead ends: 185 [2021-11-12 22:57:10,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:57:10,942 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 32 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2581.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2743.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:10,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 422 Invalid, 169 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [11 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 2743.33ms Time] [2021-11-12 22:57:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-12 22:57:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-11-12 22:57:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 110 states have (on average 1.809090909090909) internal successors, (199), 179 states have internal predecessors, (199), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-11-12 22:57:10,962 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 6 [2021-11-12 22:57:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:10,963 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-11-12 22:57:10,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-11-12 22:57:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:57:10,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:10,964 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 22:57:10,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:11,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:11,172 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-11-12 22:57:11,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:11,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412973130] [2021-11-12 22:57:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:11,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:11,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:11,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:57:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:11,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:57:11,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:11,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:14,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:14,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412973130] [2021-11-12 22:57:14,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412973130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:14,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1503318014] [2021-11-12 22:57:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:14,272 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:57:14,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:57:14,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:57:14,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 22:57:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:14,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:57:14,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:14,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:14,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:15,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1503318014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:15,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704840451] [2021-11-12 22:57:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:15,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:15,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:15,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:57:15,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:57:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:15,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:57:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:15,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:15,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:16,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704840451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:16,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:57:16,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-12 22:57:16,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194924600] [2021-11-12 22:57:16,514 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:57:16,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:57:16,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:57:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:57:16,516 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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) [2021-11-12 22:57:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:22,376 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-12 22:57:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:57:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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 14 [2021-11-12 22:57:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:22,379 INFO L225 Difference]: With dead ends: 192 [2021-11-12 22:57:22,379 INFO L226 Difference]: Without dead ends: 192 [2021-11-12 22:57:22,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:57:22,383 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 48 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5119.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5448.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:22,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 780 Invalid, 414 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [23 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 5448.35ms Time] [2021-11-12 22:57:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-12 22:57:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-12 22:57:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 121 states have (on average 1.71900826446281) internal successors, (208), 189 states have internal predecessors, (208), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 210 transitions. [2021-11-12 22:57:22,401 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 210 transitions. Word has length 14 [2021-11-12 22:57:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:22,401 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 210 transitions. [2021-11-12 22:57:22,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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) [2021-11-12 22:57:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 210 transitions. [2021-11-12 22:57:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:22,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:22,403 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:22,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:22,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:22,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:23,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:23,007 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2097228600, now seen corresponding path program 1 times [2021-11-12 22:57:23,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:23,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597370686] [2021-11-12 22:57:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:23,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:23,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:23,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:23,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:57:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:23,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:23,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:23,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:23,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:23,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597370686] [2021-11-12 22:57:23,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597370686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:23,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1883396770] [2021-11-12 22:57:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:23,541 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:57:23,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:57:23,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:57:23,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 22:57:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:23,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:23,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:24,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1883396770] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:24,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272534223] [2021-11-12 22:57:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:24,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:24,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:24,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:57:24,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:57:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:24,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:24,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:24,278 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:57:24,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 22:57:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:57:24,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:57:24,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272534223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:24,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 22:57:24,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [8, 8, 8, 8] total 15 [2021-11-12 22:57:24,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298919523] [2021-11-12 22:57:24,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:24,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:24,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:57:24,412 INFO L87 Difference]: Start difference. First operand 192 states and 210 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:25,151 INFO L93 Difference]: Finished difference Result 203 states and 222 transitions. [2021-11-12 22:57:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:25,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-12 22:57:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:25,154 INFO L225 Difference]: With dead ends: 203 [2021-11-12 22:57:25,154 INFO L226 Difference]: Without dead ends: 203 [2021-11-12 22:57:25,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:57:25,155 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 155 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 672.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 729.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:25,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 155 Invalid, 84 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 729.38ms Time] [2021-11-12 22:57:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-12 22:57:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 187. [2021-11-12 22:57:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.677685950413223) internal successors, (203), 184 states have internal predecessors, (203), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 205 transitions. [2021-11-12 22:57:25,166 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 205 transitions. Word has length 33 [2021-11-12 22:57:25,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:25,166 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 205 transitions. [2021-11-12 22:57:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 205 transitions. [2021-11-12 22:57:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:25,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:25,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:25,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:25,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:25,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:25,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2097228599, now seen corresponding path program 1 times [2021-11-12 22:57:25,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:25,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997546727] [2021-11-12 22:57:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:25,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:25,785 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:25,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:57:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:25,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:25,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:26,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:26,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:26,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997546727] [2021-11-12 22:57:26,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997546727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:26,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1288190310] [2021-11-12 22:57:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:26,273 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:57:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:57:26,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:57:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:57:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:26,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:26,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:26,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:26,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1288190310] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:26,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374778135] [2021-11-12 22:57:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:26,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:57:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:57:26,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:57:26,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:57:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:26,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:57:26,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:27,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:27,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374778135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:57:27,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:57:27,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-12 22:57:27,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846510435] [2021-11-12 22:57:27,496 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:57:27,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 22:57:27,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 22:57:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:57:27,497 INFO L87 Difference]: Start difference. First operand 187 states and 205 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:28,199 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-11-12 22:57:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:57:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-12 22:57:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:28,201 INFO L225 Difference]: With dead ends: 215 [2021-11-12 22:57:28,202 INFO L226 Difference]: Without dead ends: 215 [2021-11-12 22:57:28,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:57:28,203 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 939 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 346.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:28,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 1478 Invalid, 175 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [28 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 346.19ms Time] [2021-11-12 22:57:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-12 22:57:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-12 22:57:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 212 states have internal predecessors, (232), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 234 transitions. [2021-11-12 22:57:28,213 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 234 transitions. Word has length 33 [2021-11-12 22:57:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:28,214 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 234 transitions. [2021-11-12 22:57:28,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 234 transitions. [2021-11-12 22:57:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-12 22:57:28,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:28,216 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:28,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:28,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:28,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-12 22:57:28,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:28,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1538904666, now seen corresponding path program 2 times [2021-11-12 22:57:28,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:28,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567651312] [2021-11-12 22:57:28,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:57:28,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:28,823 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:28,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:57:29,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:57:29,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:57:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:57:29,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:29,351 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:57:29,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-11-12 22:57:29,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-12 22:57:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:29,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:30,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:30,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567651312] [2021-11-12 22:57:30,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567651312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:30,084 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:30,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:57:30,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336064406] [2021-11-12 22:57:30,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:30,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:57:30,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:57:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:57:30,086 INFO L87 Difference]: Start difference. First operand 215 states and 234 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:32,653 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2021-11-12 22:57:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:57:32,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2021-11-12 22:57:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:32,656 INFO L225 Difference]: With dead ends: 214 [2021-11-12 22:57:32,656 INFO L226 Difference]: Without dead ends: 214 [2021-11-12 22:57:32,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:57:32,657 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 6 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2398.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 2530.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:32,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 652 Invalid, 88 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 1 Unchecked, 2530.84ms Time] [2021-11-12 22:57:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-12 22:57:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-12 22:57:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 149 states have (on average 1.5503355704697988) internal successors, (231), 211 states have internal predecessors, (231), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 233 transitions. [2021-11-12 22:57:32,665 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 233 transitions. Word has length 53 [2021-11-12 22:57:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:32,666 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 233 transitions. [2021-11-12 22:57:32,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 233 transitions. [2021-11-12 22:57:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 22:57:32,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:32,668 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:32,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:32,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:32,882 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1027957769, now seen corresponding path program 1 times [2021-11-12 22:57:32,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:32,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432710314] [2021-11-12 22:57:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:32,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:32,885 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:32,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:57:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:33,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 22:57:33,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:33,593 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:57:33,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2021-11-12 22:57:33,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-11-12 22:57:34,080 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-12 22:57:34,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 63 [2021-11-12 22:57:34,091 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:57:34,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2021-11-12 22:57:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:34,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:35,452 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-12 22:57:35,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-12 22:57:39,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-11-12 22:57:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:40,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:40,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432710314] [2021-11-12 22:57:40,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432710314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:40,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:40,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-12 22:57:40,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832607357] [2021-11-12 22:57:40,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:40,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:57:40,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:57:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=163, Unknown=2, NotChecked=0, Total=210 [2021-11-12 22:57:40,353 INFO L87 Difference]: Start difference. First operand 214 states and 233 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:43,290 INFO L93 Difference]: Finished difference Result 214 states and 234 transitions. [2021-11-12 22:57:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:57:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2021-11-12 22:57:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:43,294 INFO L225 Difference]: With dead ends: 214 [2021-11-12 22:57:43,294 INFO L226 Difference]: Without dead ends: 214 [2021-11-12 22:57:43,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=57, Invalid=213, Unknown=2, NotChecked=0, Total=272 [2021-11-12 22:57:43,295 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 25 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2607.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 2745.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:43,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1169 Invalid, 455 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 343 Unchecked, 2745.73ms Time] [2021-11-12 22:57:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-12 22:57:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-12 22:57:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 211 states have internal predecessors, (232), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 234 transitions. [2021-11-12 22:57:43,302 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 234 transitions. Word has length 56 [2021-11-12 22:57:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:43,302 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 234 transitions. [2021-11-12 22:57:43,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 234 transitions. [2021-11-12 22:57:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:57:43,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:43,313 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:43,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:43,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:43,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1801919168, now seen corresponding path program 1 times [2021-11-12 22:57:43,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:43,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665030448] [2021-11-12 22:57:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:43,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:43,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:43,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:57:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:43,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:57:43,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:43,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:43,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:43,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665030448] [2021-11-12 22:57:43,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665030448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:43,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:43,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:57:43,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483448821] [2021-11-12 22:57:43,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:43,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:57:43,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:57:43,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:43,928 INFO L87 Difference]: Start difference. First operand 214 states and 234 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:44,716 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2021-11-12 22:57:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:57:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-12 22:57:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:44,718 INFO L225 Difference]: With dead ends: 224 [2021-11-12 22:57:44,718 INFO L226 Difference]: Without dead ends: 224 [2021-11-12 22:57:44,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:57:44,719 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 260 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 702.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 769.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:44,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 192 Invalid, 116 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 769.01ms Time] [2021-11-12 22:57:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-12 22:57:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 208. [2021-11-12 22:57:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 151 states have (on average 1.4966887417218544) internal successors, (226), 205 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 228 transitions. [2021-11-12 22:57:44,726 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 228 transitions. Word has length 57 [2021-11-12 22:57:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:44,727 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 228 transitions. [2021-11-12 22:57:44,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 228 transitions. [2021-11-12 22:57:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:57:44,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:44,729 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:44,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:44,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:44,943 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1801919169, now seen corresponding path program 1 times [2021-11-12 22:57:44,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:44,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730212168] [2021-11-12 22:57:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:44,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:44,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:44,945 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:44,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:57:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:45,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:57:45,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:45,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:45,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:45,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730212168] [2021-11-12 22:57:45,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730212168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:45,581 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:45,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 22:57:45,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947070042] [2021-11-12 22:57:45,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:45,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:57:45,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:57:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:57:45,583 INFO L87 Difference]: Start difference. First operand 208 states and 228 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:45,992 INFO L93 Difference]: Finished difference Result 228 states and 248 transitions. [2021-11-12 22:57:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:57:45,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-12 22:57:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:45,994 INFO L225 Difference]: With dead ends: 228 [2021-11-12 22:57:45,995 INFO L226 Difference]: Without dead ends: 228 [2021-11-12 22:57:45,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:57:45,996 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 390 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:45,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 937 Invalid, 109 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 362.24ms Time] [2021-11-12 22:57:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-12 22:57:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 208. [2021-11-12 22:57:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 151 states have (on average 1.490066225165563) internal successors, (225), 205 states have internal predecessors, (225), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 227 transitions. [2021-11-12 22:57:46,006 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 227 transitions. Word has length 57 [2021-11-12 22:57:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 227 transitions. [2021-11-12 22:57:46,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 227 transitions. [2021-11-12 22:57:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 22:57:46,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:46,014 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:46,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:46,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:46,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 24937354, now seen corresponding path program 1 times [2021-11-12 22:57:46,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:46,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826940684] [2021-11-12 22:57:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:46,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:46,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:46,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:57:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:46,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:57:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:46,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:47,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-12 22:57:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:47,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:47,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826940684] [2021-11-12 22:57:47,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826940684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:47,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:47,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:57:47,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825114571] [2021-11-12 22:57:47,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:47,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:57:47,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:57:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:57:47,450 INFO L87 Difference]: Start difference. First operand 208 states and 227 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:48,393 INFO L93 Difference]: Finished difference Result 348 states and 384 transitions. [2021-11-12 22:57:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:57:48,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-12 22:57:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:48,396 INFO L225 Difference]: With dead ends: 348 [2021-11-12 22:57:48,396 INFO L226 Difference]: Without dead ends: 348 [2021-11-12 22:57:48,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:57:48,397 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 889 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 710.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 814.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:48,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 553 Invalid, 103 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 814.13ms Time] [2021-11-12 22:57:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-12 22:57:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 206. [2021-11-12 22:57:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 151 states have (on average 1.4768211920529801) internal successors, (223), 203 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 225 transitions. [2021-11-12 22:57:48,405 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 225 transitions. Word has length 58 [2021-11-12 22:57:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:48,406 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 225 transitions. [2021-11-12 22:57:48,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 225 transitions. [2021-11-12 22:57:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:57:48,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:48,408 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:48,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:48,620 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 773057960, now seen corresponding path program 1 times [2021-11-12 22:57:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:48,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283514627] [2021-11-12 22:57:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:48,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:48,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:48,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:57:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:49,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:57:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:49,261 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:57:49,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-12 22:57:49,286 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:57:49,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-12 22:57:49,717 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-12 22:57:49,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-11-12 22:57:49,726 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:57:49,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 50 [2021-11-12 22:57:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:49,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:54,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-11-12 22:57:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:55,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:55,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283514627] [2021-11-12 22:57:55,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283514627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:55,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:55,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 22:57:55,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745925805] [2021-11-12 22:57:55,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:55,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:57:55,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:57:55,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-12 22:57:55,291 INFO L87 Difference]: Start difference. First operand 206 states and 225 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:55,537 INFO L93 Difference]: Finished difference Result 209 states and 229 transitions. [2021-11-12 22:57:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:57:55,538 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-11-12 22:57:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:55,539 INFO L225 Difference]: With dead ends: 209 [2021-11-12 22:57:55,540 INFO L226 Difference]: Without dead ends: 209 [2021-11-12 22:57:55,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2021-11-12 22:57:55,541 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 7 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 67.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:55,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1113 Invalid, 231 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 210 Unchecked, 67.19ms Time] [2021-11-12 22:57:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-12 22:57:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-11-12 22:57:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 154 states have (on average 1.474025974025974) internal successors, (227), 206 states have internal predecessors, (227), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 229 transitions. [2021-11-12 22:57:55,548 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 229 transitions. Word has length 59 [2021-11-12 22:57:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:55,548 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 229 transitions. [2021-11-12 22:57:55,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:57:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 229 transitions. [2021-11-12 22:57:55,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:57:55,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:55,550 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:55,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:55,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:55,763 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 773057959, now seen corresponding path program 1 times [2021-11-12 22:57:55,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:55,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059359239] [2021-11-12 22:57:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:55,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:55,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:55,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 22:57:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:56,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:57:56,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:56,418 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:57:56,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 22:57:56,465 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:57:56,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-12 22:57:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:56,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:56,617 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:56,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059359239] [2021-11-12 22:57:56,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059359239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:56,618 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:56,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:57:56,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441949540] [2021-11-12 22:57:56,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:56,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:56,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:56,620 INFO L87 Difference]: Start difference. First operand 209 states and 229 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:57,192 INFO L93 Difference]: Finished difference Result 216 states and 236 transitions. [2021-11-12 22:57:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-12 22:57:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:57,194 INFO L225 Difference]: With dead ends: 216 [2021-11-12 22:57:57,194 INFO L226 Difference]: Without dead ends: 216 [2021-11-12 22:57:57,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:57,195 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 137 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 566.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:57,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 148 Invalid, 70 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 566.49ms Time] [2021-11-12 22:57:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-12 22:57:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2021-11-12 22:57:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.471698113207547) internal successors, (234), 210 states have internal predecessors, (234), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 236 transitions. [2021-11-12 22:57:57,202 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 236 transitions. Word has length 59 [2021-11-12 22:57:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:57,202 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 236 transitions. [2021-11-12 22:57:57,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:57:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 236 transitions. [2021-11-12 22:57:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:57:57,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:57,203 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:57,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:57,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:57,412 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:57:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 555034319, now seen corresponding path program 1 times [2021-11-12 22:57:57,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:57,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446780157] [2021-11-12 22:57:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:57,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:57,414 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 22:57:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:57,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:57:57,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:58,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:57:58,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-12 22:57:58,418 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-12 22:57:58,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-11-12 22:57:58,522 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:57:58,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 17 [2021-11-12 22:57:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:57:58,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:00,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem153#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:58:02,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:58:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:58:02,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:02,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446780157] [2021-11-12 22:58:02,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446780157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:02,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:02,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-12 22:58:02,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017393175] [2021-11-12 22:58:02,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:02,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:58:02,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:58:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-12 22:58:02,795 INFO L87 Difference]: Start difference. First operand 213 states and 236 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:21,338 WARN L227 SmtUtils]: Spent 16.06s on a formula simplification. DAG size of input: 51 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:58:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:25,950 INFO L93 Difference]: Finished difference Result 211 states and 233 transitions. [2021-11-12 22:58:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:58:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-12 22:58:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:25,952 INFO L225 Difference]: With dead ends: 211 [2021-11-12 22:58:25,952 INFO L226 Difference]: Without dead ends: 211 [2021-11-12 22:58:25,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=51, Invalid=110, Unknown=3, NotChecked=46, Total=210 [2021-11-12 22:58:25,953 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 170 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 860.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 935.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:25,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 615 Invalid, 540 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 388 Unchecked, 935.11ms Time] [2021-11-12 22:58:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-12 22:58:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-12 22:58:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 159 states have (on average 1.4528301886792452) internal successors, (231), 208 states have internal predecessors, (231), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 233 transitions. [2021-11-12 22:58:25,960 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 233 transitions. Word has length 62 [2021-11-12 22:58:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:25,960 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 233 transitions. [2021-11-12 22:58:25,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 233 transitions. [2021-11-12 22:58:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:58:25,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:25,961 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:25,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:26,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:26,162 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:58:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash 555034320, now seen corresponding path program 1 times [2021-11-12 22:58:26,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:26,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360435168] [2021-11-12 22:58:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:26,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:26,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:26,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:26,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:58:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:26,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:58:26,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:27,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-12 22:58:27,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:58:27,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:58:27,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:58:27,298 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:58:27,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-12 22:58:27,343 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:58:27,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-12 22:58:27,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-12 22:58:27,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-11-12 22:58:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:58:27,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:32,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:58:32,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:58:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:58:32,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:32,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360435168] [2021-11-12 22:58:32,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360435168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:32,312 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:32,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:58:32,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934229483] [2021-11-12 22:58:32,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:32,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:58:32,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:58:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2021-11-12 22:58:32,314 INFO L87 Difference]: Start difference. First operand 211 states and 233 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:36,710 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2021-11-12 22:58:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:58:36,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-12 22:58:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:36,713 INFO L225 Difference]: With dead ends: 210 [2021-11-12 22:58:36,713 INFO L226 Difference]: Without dead ends: 210 [2021-11-12 22:58:36,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=54, Invalid=127, Unknown=1, NotChecked=0, Total=182 [2021-11-12 22:58:36,714 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 163 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3828.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4141.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:36,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 581 Invalid, 290 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [5 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 4141.88ms Time] [2021-11-12 22:58:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-12 22:58:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-12 22:58:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 159 states have (on average 1.4465408805031446) internal successors, (230), 207 states have internal predecessors, (230), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2021-11-12 22:58:36,721 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 62 [2021-11-12 22:58:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:36,721 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2021-11-12 22:58:36,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:58:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2021-11-12 22:58:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:58:36,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:36,722 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2021-11-12 22:58:36,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:36,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:36,936 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:58:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1316782854, now seen corresponding path program 1 times [2021-11-12 22:58:36,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:36,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207455337] [2021-11-12 22:58:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:36,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:36,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:36,938 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:36,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 22:58:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:37,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:58:37,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:37,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-12 22:58:37,727 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:58:37,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-12 22:58:37,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-12 22:58:37,972 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:58:37,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-12 22:58:38,198 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:58:38,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-12 22:58:38,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 33 [2021-11-12 22:58:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:58:38,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:38,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:58:38,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:58:54,566 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:58:56,625 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem153#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))))) is different from false [2021-11-12 22:58:58,232 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-12 22:58:58,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 110 [2021-11-12 22:58:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:58:58,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:58,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207455337] [2021-11-12 22:58:58,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207455337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:58,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:58,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-12 22:58:58,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071684092] [2021-11-12 22:58:58,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:58,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:58:58,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:58:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=137, Unknown=7, NotChecked=50, Total=240 [2021-11-12 22:58:58,768 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:59:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:03,631 INFO L93 Difference]: Finished difference Result 332 states and 373 transitions. [2021-11-12 22:59:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:59:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-12 22:59:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:03,637 INFO L225 Difference]: With dead ends: 332 [2021-11-12 22:59:03,637 INFO L226 Difference]: Without dead ends: 332 [2021-11-12 22:59:03,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=8, NotChecked=66, Total=380 [2021-11-12 22:59:03,638 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 458 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2047.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 2274.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:03,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 925 Invalid, 1135 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [13 Valid, 348 Invalid, 0 Unknown, 774 Unchecked, 2274.44ms Time] [2021-11-12 22:59:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-12 22:59:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 224. [2021-11-12 22:59:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 221 states have internal predecessors, (250), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:59:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2021-11-12 22:59:03,646 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 66 [2021-11-12 22:59:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:03,646 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2021-11-12 22:59:03,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:59:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2021-11-12 22:59:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:59:03,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:03,648 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2021-11-12 22:59:03,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-12 22:59:03,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:03,867 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 22:59:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1316782853, now seen corresponding path program 1 times [2021-11-12 22:59:03,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:03,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848366675] [2021-11-12 22:59:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:03,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:03,869 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:03,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 22:59:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:04,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:59:04,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:04,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-12 22:59:04,665 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:59:04,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-12 22:59:04,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:59:04,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-12 22:59:04,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:59:05,019 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:59:05,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-12 22:59:05,078 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:59:05,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-12 22:59:05,367 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:59:05,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-12 22:59:05,404 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-12 22:59:05,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-12 22:59:05,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 46 [2021-11-12 22:59:05,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-11-12 22:59:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:59:05,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:06,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:59:06,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 22:59:06,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:59:06,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-12 22:59:42,562 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse3 (bvadd .cse6 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse3 |ULTIMATE.start_main_#t~mem153#1.base|))) (.cse4 (bvadd .cse6 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)) (.cse2 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse3 |ULTIMATE.start_main_#t~mem153#1.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) (_ bv1 64)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))))))) (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse8 (let ((.cse13 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse12 (bvadd .cse13 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse11 (bvadd .cse13 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse11 |ULTIMATE.start_main_#t~mem153#1.offset|))) (.cse10 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse11 |ULTIMATE.start_main_#t~mem153#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12))) (store .cse9 .cse10 (store (select .cse9 .cse10) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12))))) (bvule (bvadd .cse7 .cse8) (bvadd .cse7 .cse8 (_ bv1 64)))))) is different from false [2021-11-12 22:59:53,309 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-12 22:59:53,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-12 22:59:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:59:53,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:53,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848366675] [2021-11-12 22:59:53,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848366675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:53,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:53,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-12 22:59:53,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147700156] [2021-11-12 22:59:53,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:53,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 22:59:53,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 22:59:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=209, Unknown=12, NotChecked=30, Total=306 [2021-11-12 22:59:53,395 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:00:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:15,845 INFO L93 Difference]: Finished difference Result 234 states and 254 transitions. [2021-11-12 23:00:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:00:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-12 23:00:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:15,848 INFO L225 Difference]: With dead ends: 234 [2021-11-12 23:00:15,848 INFO L226 Difference]: Without dead ends: 234 [2021-11-12 23:00:15,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=139, Invalid=449, Unknown=16, NotChecked=46, Total=650 [2021-11-12 23:00:15,849 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 340 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6912.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.01ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 7371.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:15,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 575 Invalid, 748 Unknown, 0 Unchecked, 4.01ms Time], IncrementalHoareTripleChecker [21 Valid, 517 Invalid, 0 Unknown, 210 Unchecked, 7371.12ms Time] [2021-11-12 23:00:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-12 23:00:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 223. [2021-11-12 23:00:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 172 states have (on average 1.4244186046511629) internal successors, (245), 220 states have internal predecessors, (245), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:00:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 247 transitions. [2021-11-12 23:00:15,854 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 247 transitions. Word has length 66 [2021-11-12 23:00:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:15,854 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 247 transitions. [2021-11-12 23:00:15,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:00:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 247 transitions. [2021-11-12 23:00:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:00:15,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:15,856 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:15,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:16,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:16,072 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-12 23:00:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:16,072 INFO L85 PathProgramCache]: Analyzing trace with hash 238772969, now seen corresponding path program 1 times [2021-11-12 23:00:16,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:16,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035376500] [2021-11-12 23:00:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:16,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:16,074 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:16,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:00:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:00:16,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:17,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-12 23:00:17,128 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 23:00:17,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-12 23:00:17,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-12 23:00:17,351 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 23:00:17,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2021-11-12 23:00:17,584 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 23:00:17,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-12 23:00:17,904 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 23:00:17,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-12 23:00:18,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 32 [2021-11-12 23:00:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 23:00:18,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:18,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:00:18,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-12 23:00:26,653 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:00:26,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:00:26,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-12 23:00:28,736 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem154#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem154#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:00:30,791 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) is different from false [2021-11-12 23:00:32,884 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem153#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:01:31,591 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-12 23:01:31,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 108 [2021-11-12 23:01:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-11-12 23:01:31,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:31,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035376500] [2021-11-12 23:01:31,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035376500] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:01:31,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106606596] [2021-11-12 23:01:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:31,935 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:01:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:01:31,937 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:01:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e510778-63ea-40b3-9014-d32cdeb50309/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 23:01:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:32,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:01:32,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:33,082 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:01:33,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-12 23:01:33,149 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 23:01:33,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-12 23:01:33,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-12 23:01:33,449 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 23:01:33,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-11-12 23:01:50,788 WARN L227 SmtUtils]: Spent 16.89s on a formula simplification. DAG size of input: 48 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:01:50,788 INFO L354 Elim1Store]: treesize reduction 71, result has 51.0 percent of original size [2021-11-12 23:01:50,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 114 [2021-11-12 23:01:57,516 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 23:01:57,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 47 [2021-11-12 23:01:57,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 32 [2021-11-12 23:01:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 23:01:57,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:57,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:01:57,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:02:07,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:02:07,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-12 23:02:09,501 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem154#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem154#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:02:11,537 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:02:13,620 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem153#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-12 23:02:15,688 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem154#1.offset| (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem156#1.offset| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem156#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false