./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0 --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 32bit --witnessprinter.graph.data.programhash 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:25:10,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:25:10,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:25:10,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:25:10,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:25:10,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:25:10,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:25:10,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:25:10,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:25:10,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:25:10,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:25:10,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:25:10,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:25:10,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:25:10,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:25:10,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:25:10,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:25:10,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:25:10,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:25:10,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:25:10,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:25:10,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:25:10,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:25:10,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:25:10,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:25:10,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:25:10,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:25:10,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:25:10,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:25:10,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:25:10,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:25:10,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:25:10,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:25:10,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:25:10,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:25:10,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:25:10,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:25:10,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:25:10,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:25:10,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:25:10,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:25:10,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 16:25:10,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:25:10,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:25:10,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:25:10,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:25:10,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:25:10,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:25:10,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:25:10,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:25:10,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:25:10,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:25:10,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:25:10,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:25:10,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:25:10,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:25:10,397 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:25:10,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:25:10,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:25:10,397 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:25:10,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:25:10,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:25:10,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:25:10,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:25:10,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:25:10,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:25:10,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:25:10,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:25:10,401 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:25:10,401 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:25:10,401 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:25:10,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:25:10,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:25:10,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:25:10,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:25:10,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:25:10,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:25:10,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:25:10,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:25:10,403 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:25:10,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:25:10,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:25:10,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:25:10,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:25:10,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2022-11-16 16:25:10,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:25:10,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:25:10,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:25:10,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:25:10,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:25:10,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2022-11-16 16:25:10,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/70fc55410/7cf3d01ba9b7496b871268cc146a78db/FLAG81d306480 [2022-11-16 16:25:11,249 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:25:11,254 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2022-11-16 16:25:11,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/70fc55410/7cf3d01ba9b7496b871268cc146a78db/FLAG81d306480 [2022-11-16 16:25:11,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/70fc55410/7cf3d01ba9b7496b871268cc146a78db [2022-11-16 16:25:11,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:25:11,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:25:11,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:25:11,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:25:11,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:25:11,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:25:11" (1/1) ... [2022-11-16 16:25:11,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1313ae6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:11, skipping insertion in model container [2022-11-16 16:25:11,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:25:11" (1/1) ... [2022-11-16 16:25:11,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:25:11,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:25:12,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:25:12,369 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 16:25:12,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ebcba4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:12, skipping insertion in model container [2022-11-16 16:25:12,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:25:12,371 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 16:25:12,375 INFO L158 Benchmark]: Toolchain (without parser) took 635.20ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 85.0MB in the end (delta: -10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:25:12,375 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:25:12,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.54ms. Allocated memory is still 113.2MB. Free memory was 73.9MB in the beginning and 85.0MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:25:12,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 113.2MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.54ms. Allocated memory is still 113.2MB. Free memory was 73.9MB in the beginning and 85.0MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0 --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 32bit --witnessprinter.graph.data.programhash 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:25:14,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:25:14,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:25:14,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:25:14,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:25:14,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:25:14,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:25:14,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:25:14,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:25:14,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:25:14,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:25:14,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:25:14,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:25:14,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:25:14,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:25:14,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:25:14,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:25:14,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:25:14,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:25:14,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:25:14,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:25:14,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:25:14,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:25:14,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:25:14,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:25:14,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:25:14,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:25:14,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:25:14,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:25:14,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:25:14,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:25:14,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:25:14,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:25:14,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:25:14,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:25:14,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:25:14,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:25:14,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:25:14,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:25:14,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:25:14,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:25:14,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-16 16:25:14,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:25:14,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:25:14,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:25:14,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:25:14,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:25:14,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:25:14,771 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:25:14,771 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:25:14,771 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:25:14,772 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:25:14,773 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:25:14,773 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:25:14,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:25:14,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:25:14,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:25:14,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:25:14,776 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:25:14,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:25:14,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:25:14,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:25:14,777 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:25:14,777 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:25:14,777 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:25:14,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:25:14,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:25:14,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:25:14,778 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:25:14,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:25:14,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:25:14,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:25:14,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:25:14,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:25:14,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:25:14,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:25:14,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:25:14,781 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:25:14,781 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:14,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:25:14,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:25:14,782 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_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2022-11-16 16:25:15,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:25:15,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:25:15,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:25:15,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:25:15,193 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:25:15,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2022-11-16 16:25:15,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/e4db7c19f/b3d7b549e45b4058bdd036ea8de5ab78/FLAG2ac522edf [2022-11-16 16:25:15,903 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:25:15,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2022-11-16 16:25:15,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/e4db7c19f/b3d7b549e45b4058bdd036ea8de5ab78/FLAG2ac522edf [2022-11-16 16:25:16,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/data/e4db7c19f/b3d7b549e45b4058bdd036ea8de5ab78 [2022-11-16 16:25:16,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:25:16,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:25:16,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:25:16,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:25:16,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:25:16,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:25:16" (1/1) ... [2022-11-16 16:25:16,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9303cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:16, skipping insertion in model container [2022-11-16 16:25:16,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:25:16" (1/1) ... [2022-11-16 16:25:16,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:25:16,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:25:16,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:25:16,783 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 16:25:16,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:25:16,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:25:16,891 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:25:16,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:25:17,017 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:25:17,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17 WrapperNode [2022-11-16 16:25:17,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:25:17,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:25:17,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:25:17,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:25:17,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,095 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 26 [2022-11-16 16:25:17,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:25:17,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:25:17,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:25:17,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:25:17,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:25:17,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:25:17,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:25:17,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:25:17,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (1/1) ... [2022-11-16 16:25:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:25:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:17,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:25:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:25:17,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 16:25:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:25:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:25:17,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:25:17,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:25:17,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:25:17,569 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:25:17,569 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:25:17,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:25:17 BoogieIcfgContainer [2022-11-16 16:25:17,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:25:17,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:25:17,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:25:17,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:25:17,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:25:16" (1/3) ... [2022-11-16 16:25:17,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e09d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:25:17, skipping insertion in model container [2022-11-16 16:25:17,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:25:17" (2/3) ... [2022-11-16 16:25:17,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e09d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:25:17, skipping insertion in model container [2022-11-16 16:25:17,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:25:17" (3/3) ... [2022-11-16 16:25:17,580 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2022-11-16 16:25:17,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:25:17,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-16 16:25:17,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:25:17,652 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7af2df44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:25:17,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 16:25:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:25:17,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:17,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:17,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1438496263, now seen corresponding path program 1 times [2022-11-16 16:25:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034035169] [2022-11-16 16:25:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:17,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:17,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:17,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:17,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 16:25:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:17,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:17,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:17,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034035169] [2022-11-16 16:25:17,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034035169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:17,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:17,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:25:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255927132] [2022-11-16 16:25:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:17,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:25:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:17,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:25:17,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:17,974 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 16:25:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:18,045 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-11-16 16:25:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:25:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2022-11-16 16:25:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:18,056 INFO L225 Difference]: With dead ends: 50 [2022-11-16 16:25:18,056 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 16:25:18,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:18,061 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 17 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:18,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 142 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 16:25:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-11-16 16:25:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 16:25:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 16:25:18,101 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-11-16 16:25:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:18,101 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 16:25:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 16:25:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 16:25:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:25:18,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:18,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:18,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:18,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:18,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash -550992582, now seen corresponding path program 1 times [2022-11-16 16:25:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:18,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293669320] [2022-11-16 16:25:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:18,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:18,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 16:25:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:18,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:18,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:18,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293669320] [2022-11-16 16:25:18,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293669320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:18,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:18,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:25:18,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17537516] [2022-11-16 16:25:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:18,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:25:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:25:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:25:18,457 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 16:25:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:18,545 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-16 16:25:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:25:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2022-11-16 16:25:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:18,547 INFO L225 Difference]: With dead ends: 40 [2022-11-16 16:25:18,547 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 16:25:18,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:25:18,549 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:18,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:25:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 16:25:18,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2022-11-16 16:25:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-16 16:25:18,554 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 11 [2022-11-16 16:25:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:18,555 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-16 16:25:18,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 16:25:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-16 16:25:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:25:18,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:18,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:18,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:18,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:18,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:18,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1707085477, now seen corresponding path program 1 times [2022-11-16 16:25:18,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:18,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726196514] [2022-11-16 16:25:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:18,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:18,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:18,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 16:25:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:18,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:18,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:18,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:18,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:18,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726196514] [2022-11-16 16:25:18,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726196514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:18,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:25:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484739848] [2022-11-16 16:25:18,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:25:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:25:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:18,898 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:18,933 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-16 16:25:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:25:18,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-16 16:25:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:18,937 INFO L225 Difference]: With dead ends: 25 [2022-11-16 16:25:18,937 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:25:18,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:18,943 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:18,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:25:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 16:25:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-16 16:25:18,953 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2022-11-16 16:25:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:18,954 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-16 16:25:18,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-16 16:25:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:25:18,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:18,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:18,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:19,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1380042284, now seen corresponding path program 1 times [2022-11-16 16:25:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:19,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650963781] [2022-11-16 16:25:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:19,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:19,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:19,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 16:25:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:19,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 16:25:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:19,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:19,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650963781] [2022-11-16 16:25:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650963781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:19,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:19,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:25:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465133571] [2022-11-16 16:25:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 16:25:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 16:25:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:25:19,539 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:19,555 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-11-16 16:25:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:25:19,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-16 16:25:19,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:19,557 INFO L225 Difference]: With dead ends: 42 [2022-11-16 16:25:19,557 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 16:25:19,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:25:19,558 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:19,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 84 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-11-16 16:25:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 16:25:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-16 16:25:19,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:25:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-16 16:25:19,565 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 17 [2022-11-16 16:25:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:19,566 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-16 16:25:19,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-16 16:25:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:25:19,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:19,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:19,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:19,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1408671435, now seen corresponding path program 1 times [2022-11-16 16:25:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037589955] [2022-11-16 16:25:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:19,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:19,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:19,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:19,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 16:25:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:19,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:25:19,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:19,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:19,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:19,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037589955] [2022-11-16 16:25:19,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037589955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:19,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:19,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:25:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012321757] [2022-11-16 16:25:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:25:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:25:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:25:19,923 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:20,008 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2022-11-16 16:25:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:25:20,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-16 16:25:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:20,009 INFO L225 Difference]: With dead ends: 58 [2022-11-16 16:25:20,009 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 16:25:20,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:25:20,010 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:20,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:25:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 16:25:20,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2022-11-16 16:25:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:25:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-11-16 16:25:20,017 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 17 [2022-11-16 16:25:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:20,017 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-11-16 16:25:20,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-11-16 16:25:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:25:20,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:20,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:20,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:20,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:20,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1086639277, now seen corresponding path program 2 times [2022-11-16 16:25:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:20,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883700961] [2022-11-16 16:25:20,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:20,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:20,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:20,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:20,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 16:25:20,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 16:25:20,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:20,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:25:20,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:20,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:20,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:20,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883700961] [2022-11-16 16:25:20,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883700961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:20,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:20,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:25:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170691413] [2022-11-16 16:25:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:25:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:25:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:25:20,401 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:20,474 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2022-11-16 16:25:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:25:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-16 16:25:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:20,476 INFO L225 Difference]: With dead ends: 57 [2022-11-16 16:25:20,476 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 16:25:20,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:25:20,477 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:20,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:25:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 16:25:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2022-11-16 16:25:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:25:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-16 16:25:20,482 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 17 [2022-11-16 16:25:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:20,482 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-16 16:25:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-16 16:25:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 16:25:20,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:20,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:20,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:20,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -168362105, now seen corresponding path program 1 times [2022-11-16 16:25:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:20,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128614571] [2022-11-16 16:25:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:20,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:20,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 16:25:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:20,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:25:20,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:20,777 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:20,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:20,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:20,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128614571] [2022-11-16 16:25:20,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128614571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:20,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:25:20,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:25:20,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201821535] [2022-11-16 16:25:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:25:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:25:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:20,842 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:20,880 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-11-16 16:25:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:25:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-16 16:25:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:20,881 INFO L225 Difference]: With dead ends: 35 [2022-11-16 16:25:20,882 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 16:25:20,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:20,883 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:20,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 16:25:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2022-11-16 16:25:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-16 16:25:20,886 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2022-11-16 16:25:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:20,886 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-16 16:25:20,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 16:25:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-16 16:25:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:25:20,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:20,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:20,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:21,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:21,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -924257906, now seen corresponding path program 1 times [2022-11-16 16:25:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:21,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741693198] [2022-11-16 16:25:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:21,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:21,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:21,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 16:25:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:21,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:21,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,248 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741693198] [2022-11-16 16:25:21,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741693198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895497393] [2022-11-16 16:25:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:21,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:21,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:21,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:21,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 16:25:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:21,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1895497393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701263940] [2022-11-16 16:25:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:21,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:21,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 16:25:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:21,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:21,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:21,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701263940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:21,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:21,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2022-11-16 16:25:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999284470] [2022-11-16 16:25:21,626 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:25:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:25:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:21,627 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:21,648 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-16 16:25:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:25:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-16 16:25:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:21,650 INFO L225 Difference]: With dead ends: 26 [2022-11-16 16:25:21,650 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 16:25:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:21,654 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:21,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 16:25:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-16 16:25:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-16 16:25:21,667 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2022-11-16 16:25:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:21,667 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-16 16:25:21,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-16 16:25:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 16:25:21,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:21,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:21,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:21,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:22,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:22,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:22,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1412776041, now seen corresponding path program 1 times [2022-11-16 16:25:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:22,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316383300] [2022-11-16 16:25:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:22,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:22,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:22,272 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:22,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 16:25:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:22,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:25:22,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:22,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:22,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:22,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316383300] [2022-11-16 16:25:22,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316383300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:22,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021582811] [2022-11-16 16:25:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:22,681 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:22,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:22,683 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:22,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 16:25:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:22,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:22,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:22,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:22,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1021582811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:22,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624902359] [2022-11-16 16:25:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:22,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:22,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:22,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:22,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 16:25:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:22,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:23,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:23,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624902359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:23,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:23,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 5, 4] total 9 [2022-11-16 16:25:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330268587] [2022-11-16 16:25:23,070 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:23,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 16:25:23,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 16:25:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:25:23,072 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 16:25:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:23,221 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-16 16:25:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 16:25:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2022-11-16 16:25:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:23,223 INFO L225 Difference]: With dead ends: 46 [2022-11-16 16:25:23,223 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 16:25:23,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:25:23,224 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 84 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-16 16:25:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 16:25:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2022-11-16 16:25:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-16 16:25:23,227 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2022-11-16 16:25:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-16 16:25:23,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 16:25:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-16 16:25:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 16:25:23,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:23,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:23,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-16 16:25:23,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:23,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:23,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:23,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:23,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 846384368, now seen corresponding path program 1 times [2022-11-16 16:25:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690689715] [2022-11-16 16:25:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:23,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:23,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 16:25:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:23,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:25:23,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:23,926 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:24,036 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:25:24,037 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 16:25:24,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:24,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:24,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:24,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690689715] [2022-11-16 16:25:24,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690689715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:24,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1244344803] [2022-11-16 16:25:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:24,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:24,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:24,561 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:24,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-16 16:25:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:24,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:25:24,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:24,693 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:24,778 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:25:24,779 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 16:25:24,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:24,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:27,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1244344803] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:27,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984657603] [2022-11-16 16:25:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:27,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:27,132 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 16:25:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:27,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:25:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:27,210 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:27,297 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:25:27,298 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 16:25:27,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:27,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:27,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984657603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:27,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:27,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 11 [2022-11-16 16:25:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245669853] [2022-11-16 16:25:27,935 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:25:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:25:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2022-11-16 16:25:27,937 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:25:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:28,067 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-11-16 16:25:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:25:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-16 16:25:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:28,068 INFO L225 Difference]: With dead ends: 43 [2022-11-16 16:25:28,068 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 16:25:28,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2022-11-16 16:25:28,069 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:28,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-16 16:25:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 16:25:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-11-16 16:25:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 16:25:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-16 16:25:28,074 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 21 [2022-11-16 16:25:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:28,074 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-16 16:25:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:25:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-16 16:25:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 16:25:28,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:28,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:28,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:28,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:28,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:28,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:28,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash 649870863, now seen corresponding path program 1 times [2022-11-16 16:25:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:28,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418351188] [2022-11-16 16:25:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:28,686 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:28,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 16:25:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:28,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:25:28,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:28,771 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:28,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:28,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:29,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:29,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418351188] [2022-11-16 16:25:29,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418351188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:29,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [381933074] [2022-11-16 16:25:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:29,229 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:29,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:29,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:29,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 16:25:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:29,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:25:29,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:29,348 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:29,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:29,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:29,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [381933074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:29,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598466001] [2022-11-16 16:25:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:29,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:29,640 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:29,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 16:25:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:25:29,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:29,715 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-16 16:25:29,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 16:25:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:29,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:25:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598466001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:30,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:30,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 8, 9] total 13 [2022-11-16 16:25:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195920489] [2022-11-16 16:25:30,032 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:25:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:25:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:25:30,034 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:25:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:30,158 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-16 16:25:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:25:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-16 16:25:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:30,160 INFO L225 Difference]: With dead ends: 46 [2022-11-16 16:25:30,160 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 16:25:30,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:25:30,160 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:30,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 100 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-16 16:25:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 16:25:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-11-16 16:25:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 16:25:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-11-16 16:25:30,164 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2022-11-16 16:25:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:30,164 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-11-16 16:25:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:25:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-11-16 16:25:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 16:25:30,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:30,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:30,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:30,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:30,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:30,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:30,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2095273231, now seen corresponding path program 2 times [2022-11-16 16:25:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:30,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237100426] [2022-11-16 16:25:30,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:30,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:30,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:30,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 16:25:30,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:30,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:30,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:30,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:30,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:30,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237100426] [2022-11-16 16:25:30,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237100426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:30,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1914003878] [2022-11-16 16:25:30,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:30,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:30,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:30,909 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:30,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-16 16:25:31,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:31,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:31,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:31,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:31,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:31,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1914003878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:31,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700867857] [2022-11-16 16:25:31,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:31,108 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:31,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 16:25:31,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:31,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:31,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:25:31,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:31,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:31,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700867857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:31,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:31,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2022-11-16 16:25:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000188327] [2022-11-16 16:25:31,247 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:31,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:25:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:25:31,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:31,248 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:31,272 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-11-16 16:25:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:25:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-16 16:25:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:31,273 INFO L225 Difference]: With dead ends: 41 [2022-11-16 16:25:31,273 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 16:25:31,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:25:31,274 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:31,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 16:25:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2022-11-16 16:25:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-16 16:25:31,278 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2022-11-16 16:25:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:31,278 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-16 16:25:31,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-16 16:25:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:25:31,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:31,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:31,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:31,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:31,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:31,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1626560659, now seen corresponding path program 1 times [2022-11-16 16:25:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:31,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649819784] [2022-11-16 16:25:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:31,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:31,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:31,885 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:31,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 16:25:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:31,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 16:25:31,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:34,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:34,453 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret39#1.base_48| (_ BitVec 32))) (or (= (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret39#1.base_48| (_ bv0 1)) |c_ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret39#1.base_48|))))) is different from false [2022-11-16 16:25:34,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649819784] [2022-11-16 16:25:34,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649819784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:25:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1285543007] [2022-11-16 16:25:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:34,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:34,460 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:34,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-16 16:25:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:34,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 16:25:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:39,508 WARN L855 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((v_ArrVal_136 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~q~0#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~p~0#1.base| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base| v_ArrVal_136))) (let ((.cse0 (store .cse1 |ULTIMATE.start_entry_point_~q~0#1.base| (_ bv0 1)))) (and (not (= |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 32))) (= (store .cse0 |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 1)) |c_#valid|) (= (bvadd (select .cse0 |ULTIMATE.start_entry_point_~p~0#1.base|) (_ bv1 1)) (_ bv0 1)) (= (select .cse1 |ULTIMATE.start_entry_point_~q~0#1.base|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base|) (_ bv0 1))))))) is different from true [2022-11-16 16:25:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 16:25:39,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:25:39,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1285543007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:25:39,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 16:25:39,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-11-16 16:25:39,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404810179] [2022-11-16 16:25:39,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:25:39,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:25:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:25:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=484, Unknown=5, NotChecked=90, Total=650 [2022-11-16 16:25:39,544 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:39,629 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-11-16 16:25:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 16:25:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-16 16:25:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:39,631 INFO L225 Difference]: With dead ends: 47 [2022-11-16 16:25:39,631 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 16:25:39,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=79, Invalid=574, Unknown=5, NotChecked=98, Total=756 [2022-11-16 16:25:39,632 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:39,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 57 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 99 Unchecked, 0.0s Time] [2022-11-16 16:25:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 16:25:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-11-16 16:25:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 16:25:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-11-16 16:25:39,636 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 23 [2022-11-16 16:25:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:39,636 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-11-16 16:25:39,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-11-16 16:25:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:25:39,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:39,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:39,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:39,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-11-16 16:25:40,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:40,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643378, now seen corresponding path program 1 times [2022-11-16 16:25:40,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:40,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753076510] [2022-11-16 16:25:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:40,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:40,051 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:40,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 16:25:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:40,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 16:25:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:40,484 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_141 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~p~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base|) (_ bv0 1)) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base| v_ArrVal_141) (_ bv0 32) (_ bv0 1)) |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 1))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2022-11-16 16:25:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:40,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:40,883 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~ret38#1.base_53| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_53|) (_ bv0 1))) (= (store (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_53| v_ArrVal_146) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_53| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-16 16:25:40,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:40,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753076510] [2022-11-16 16:25:40,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753076510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:25:40,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [215124931] [2022-11-16 16:25:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:40,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:40,890 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-16 16:25:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:41,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 16:25:41,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:41,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:41,336 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_56| (_ BitVec 32)) (v_ArrVal_156 (_ BitVec 1))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_56|))) (= (store (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_56| v_ArrVal_156) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_56| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-16 16:25:41,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [215124931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:25:41,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475837020] [2022-11-16 16:25:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:25:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:41,340 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:41,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 16:25:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:25:41,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 16:25:41,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:41,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:41,764 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_166 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~ret38#1.base_59| (_ BitVec 32))) (or (= (store (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_59| v_ArrVal_166) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_59| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_59|) (_ bv0 1))))) is different from false [2022-11-16 16:25:41,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475837020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:25:41,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:25:41,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2022-11-16 16:25:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484467578] [2022-11-16 16:25:41,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:41,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 16:25:41,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 16:25:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=326, Unknown=4, NotChecked=156, Total=552 [2022-11-16 16:25:41,768 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:41,887 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-16 16:25:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 16:25:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-16 16:25:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:41,888 INFO L225 Difference]: With dead ends: 44 [2022-11-16 16:25:41,888 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 16:25:41,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=432, Unknown=4, NotChecked=180, Total=702 [2022-11-16 16:25:41,889 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:41,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 60 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-16 16:25:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 16:25:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 16:25:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2022-11-16 16:25:41,891 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 23 [2022-11-16 16:25:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:41,892 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2022-11-16 16:25:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-11-16 16:25:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 16:25:41,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:25:41,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:41,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:42,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-16 16:25:42,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:42,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:42,502 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-11-16 16:25:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:25:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 782088788, now seen corresponding path program 2 times [2022-11-16 16:25:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:25:42,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120926178] [2022-11-16 16:25:42,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:42,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:42,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:25:42,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:25:42,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 16:25:42,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:42,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:42,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:25:42,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:25:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120926178] [2022-11-16 16:25:42,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120926178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1483481787] [2022-11-16 16:25:42,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:42,643 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:25:42,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:25:42,648 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:25:42,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-16 16:25:42,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:42,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:42,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:25:42,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1483481787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:42,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37028278] [2022-11-16 16:25:42,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:25:42,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:25:42,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:25:42,842 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:25:42,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 16:25:42,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:25:42,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:25:42,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 16:25:42,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:25:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:25:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 16:25:42,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37028278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:25:42,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:25:42,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 6 [2022-11-16 16:25:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56614108] [2022-11-16 16:25:42,973 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:25:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:25:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:25:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:25:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:25:42,974 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:25:43,007 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-11-16 16:25:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:25:43,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-16 16:25:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:25:43,009 INFO L225 Difference]: With dead ends: 19 [2022-11-16 16:25:43,009 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:25:43,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 16:25:43,010 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:25:43,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:25:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:25:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:25:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-16 16:25:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:25:43,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-11-16 16:25:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:25:43,012 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:25:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:25:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:25:43,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:25:43,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (6 of 7 remaining) [2022-11-16 16:25:43,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (5 of 7 remaining) [2022-11-16 16:25:43,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 7 remaining) [2022-11-16 16:25:43,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 7 remaining) [2022-11-16 16:25:43,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 7 remaining) [2022-11-16 16:25:43,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (1 of 7 remaining) [2022-11-16 16:25:43,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-11-16 16:25:43,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-16 16:25:43,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:43,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 16:25:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:25:43,625 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:25:43,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:25:43,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:25:43 BoogieIcfgContainer [2022-11-16 16:25:43,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:25:43,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:25:43,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:25:43,638 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:25:43,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:25:17" (3/4) ... [2022-11-16 16:25:43,641 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:25:43,648 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-11-16 16:25:43,655 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-16 16:25:43,656 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 16:25:43,656 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 16:25:43,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:25:43,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:25:43,685 INFO L158 Benchmark]: Toolchain (without parser) took 27524.39ms. Allocated memory was 58.7MB in the beginning and 144.7MB in the end (delta: 86.0MB). Free memory was 36.8MB in the beginning and 56.3MB in the end (delta: -19.4MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,685 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:25:43,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 855.73ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 25.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.93ms. Allocated memory is still 58.7MB. Free memory was 24.8MB in the beginning and 22.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,687 INFO L158 Benchmark]: Boogie Preprocessor took 60.57ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 22.7MB in the beginning and 64.3MB in the end (delta: -41.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,687 INFO L158 Benchmark]: RCFGBuilder took 414.06ms. Allocated memory is still 81.8MB. Free memory was 64.3MB in the beginning and 52.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,687 INFO L158 Benchmark]: TraceAbstraction took 26062.93ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 52.1MB in the beginning and 59.4MB in the end (delta: -7.3MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,688 INFO L158 Benchmark]: Witness Printer took 47.07ms. Allocated memory is still 144.7MB. Free memory was 59.4MB in the beginning and 56.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:25:43,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 855.73ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 25.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.93ms. Allocated memory is still 58.7MB. Free memory was 24.8MB in the beginning and 22.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.57ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 22.7MB in the beginning and 64.3MB in the end (delta: -41.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.06ms. Allocated memory is still 81.8MB. Free memory was 64.3MB in the beginning and 52.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 26062.93ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 52.1MB in the beginning and 59.4MB in the end (delta: -7.3MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 47.07ms. Allocated memory is still 144.7MB. Free memory was 59.4MB in the beginning and 56.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 765]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 26.0s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 1169 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 295 IncrementalHoareTripleChecker+Unchecked, 819 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 575 IncrementalHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 350 mSDtfsCounter, 575 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 996 GetRequests, 850 SyntacticMatches, 28 SemanticMatches, 118 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 123 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 597 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 924 ConstructedInterpolants, 127 QuantifiedInterpolants, 5577 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1798 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 48 InterpolantComputations, 8 PerfectInterpolantSequences, 104/184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 16:25:43,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_101a3992-8761-4876-a78d-2037a9f986ee/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE