./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW --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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- 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-4e7fbc6 [2022-11-23 15:24:42,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:24:42,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:24:42,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:24:42,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:24:42,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:24:42,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:24:42,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:24:42,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:24:42,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:24:42,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:24:42,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:24:42,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:24:42,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:24:42,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:24:42,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:24:42,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:24:42,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:24:42,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:24:42,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:24:42,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:24:42,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:24:42,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:24:42,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:24:42,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:24:42,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:24:42,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:24:42,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:24:42,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:24:42,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:24:42,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:24:42,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:24:42,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:24:42,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:24:42,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:24:42,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:24:42,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:24:42,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:24:42,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:24:42,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:24:42,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:24:42,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 15:24:42,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:24:42,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:24:42,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:24:42,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:24:42,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:24:42,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:24:42,543 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:24:42,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:24:42,543 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:24:42,543 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:24:42,543 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:24:42,543 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:24:42,544 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:24:42,544 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:24:42,544 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:24:42,544 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:24:42,544 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:24:42,545 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:24:42,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:24:42,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:24:42,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:24:42,546 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:24:42,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:24:42,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:24:42,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:24:42,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:24:42,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:24:42,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:24:42,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:24:42,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:24:42,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:24:42,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:24:42,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:24:42,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:24:42,549 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:24:42,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:24:42,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:24:42,550 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_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2022-11-23 15:24:42,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:24:42,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:24:42,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:24:42,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:24:42,910 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:24:42,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-11-23 15:24:45,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:24:46,258 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:24:46,275 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-11-23 15:24:46,309 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/8c90d85fe/67c96a525b084dcea9b0fa091f646f0d/FLAGd054c9b3d [2022-11-23 15:24:46,324 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/8c90d85fe/67c96a525b084dcea9b0fa091f646f0d [2022-11-23 15:24:46,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:24:46,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:24:46,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:46,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:24:46,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:24:46,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:46" (1/1) ... [2022-11-23 15:24:46,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e64ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:46, skipping insertion in model container [2022-11-23 15:24:46,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:46" (1/1) ... [2022-11-23 15:24:46,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:24:46,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:24:46,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:46,831 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) [2022-11-23 15:24:46,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@739b3d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:46, skipping insertion in model container [2022-11-23 15:24:46,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:46,834 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 15:24:46,836 INFO L158 Benchmark]: Toolchain (without parser) took 492.23ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 124.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:24:46,836 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:24:46,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.00ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 124.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:24:46,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.00ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 124.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW --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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- 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-4e7fbc6 [2022-11-23 15:24:49,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:24:49,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:24:49,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:24:49,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:24:49,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:24:49,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:24:49,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:24:49,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:24:49,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:24:49,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:24:49,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:24:49,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:24:49,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:24:49,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:24:49,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:24:49,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:24:49,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:24:49,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:24:49,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:24:49,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:24:49,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:24:49,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:24:49,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:24:49,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:24:49,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:24:49,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:24:49,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:24:49,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:24:49,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:24:49,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:24:49,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:24:49,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:24:49,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:24:49,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:24:49,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:24:49,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:24:49,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:24:49,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:24:49,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:24:49,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:24:49,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 15:24:49,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:24:49,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:24:49,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:24:49,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:24:49,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:24:49,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:24:49,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:24:49,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:24:49,300 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:24:49,300 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:24:49,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:24:49,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:24:49,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 15:24:49,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 15:24:49,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:24:49,303 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:24:49,303 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:24:49,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:24:49,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:24:49,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:24:49,304 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 15:24:49,304 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 15:24:49,305 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 15:24:49,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:24:49,305 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:24:49,305 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:24:49,305 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:24:49,306 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:24:49,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:24:49,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:24:49,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:24:49,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:24:49,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:24:49,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:24:49,312 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_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2022-11-23 15:24:49,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:24:49,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:24:49,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:24:49,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:24:49,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:24:49,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-11-23 15:24:52,901 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:24:53,256 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:24:53,257 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-11-23 15:24:53,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/b8722e09e/161f22781e7d47b8aefd8628c5efc389/FLAGb6563716e [2022-11-23 15:24:53,284 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/data/b8722e09e/161f22781e7d47b8aefd8628c5efc389 [2022-11-23 15:24:53,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:24:53,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:24:53,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:53,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:24:53,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:24:53,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:53,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65989904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53, skipping insertion in model container [2022-11-23 15:24:53,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:53,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:24:53,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:24:53,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:53,773 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 15:24:53,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:24:53,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:53,886 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:24:53,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:24:53,970 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:24:53,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53 WrapperNode [2022-11-23 15:24:53,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:24:53,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:24:53,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:24:53,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:24:53,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,055 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 23, calls inlined = 17, statements flattened = 120 [2022-11-23 15:24:54,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:24:54,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:24:54,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:24:54,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:24:54,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:24:54,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:24:54,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:24:54,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:24:54,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (1/1) ... [2022-11-23 15:24:54,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:24:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:24:54,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:24:54,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:24:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:24:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-23 15:24:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-23 15:24:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:24:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:24:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2022-11-23 15:24:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2022-11-23 15:24:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:24:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:24:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:24:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:24:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:24:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:24:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:24:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:24:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:24:54,367 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:24:54,369 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:24:54,883 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:24:54,889 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:24:54,894 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:24:54,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:54 BoogieIcfgContainer [2022-11-23 15:24:54,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:24:54,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:24:54,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:24:54,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:24:54,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:24:53" (1/3) ... [2022-11-23 15:24:54,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304a3a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:54, skipping insertion in model container [2022-11-23 15:24:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:53" (2/3) ... [2022-11-23 15:24:54,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304a3a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:54, skipping insertion in model container [2022-11-23 15:24:54,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:54" (3/3) ... [2022-11-23 15:24:54,910 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2022-11-23 15:24:54,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:24:54,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-23 15:24:54,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:24:54,999 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;@7b40102f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:24:55,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-23 15:24:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:24:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:24:55,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:55,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:55,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1790059245, now seen corresponding path program 1 times [2022-11-23 15:24:55,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:55,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146228643] [2022-11-23 15:24:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:55,038 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 [2022-11-23 15:24:55,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:55,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:55,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:55,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:24:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:55,287 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 [2022-11-23 15:24:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:55,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:55,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:55,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146228643] [2022-11-23 15:24:55,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146228643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:55,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:55,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:24:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524088759] [2022-11-23 15:24:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:24:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:24:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:24:55,433 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-23 15:24:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:56,013 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2022-11-23 15:24:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:24:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2022-11-23 15:24:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:56,026 INFO L225 Difference]: With dead ends: 153 [2022-11-23 15:24:56,026 INFO L226 Difference]: Without dead ends: 151 [2022-11-23 15:24:56,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:24:56,031 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 94 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:56,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 373 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:24:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-23 15:24:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 93. [2022-11-23 15:24:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2022-11-23 15:24:56,079 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 10 [2022-11-23 15:24:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:56,080 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2022-11-23 15:24:56,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-23 15:24:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2022-11-23 15:24:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:24:56,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:56,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:56,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1761430094, now seen corresponding path program 1 times [2022-11-23 15:24:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:56,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703480515] [2022-11-23 15:24:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:56,296 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 [2022-11-23 15:24:56,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:56,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:56,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:56,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:24:56,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:56,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:56,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:56,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703480515] [2022-11-23 15:24:56,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703480515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:56,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:56,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:24:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156529849] [2022-11-23 15:24:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:24:56,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:56,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:24:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:56,443 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-11-23 15:24:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:56,477 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-11-23 15:24:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:24:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2022-11-23 15:24:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:56,479 INFO L225 Difference]: With dead ends: 110 [2022-11-23 15:24:56,479 INFO L226 Difference]: Without dead ends: 110 [2022-11-23 15:24:56,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:56,481 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 17 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:56,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 385 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-23 15:24:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2022-11-23 15:24:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2022-11-23 15:24:56,491 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 10 [2022-11-23 15:24:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:56,491 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2022-11-23 15:24:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-11-23 15:24:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2022-11-23 15:24:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:24:56,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:56,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:56,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 342738302, now seen corresponding path program 1 times [2022-11-23 15:24:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972131773] [2022-11-23 15:24:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:56,710 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 [2022-11-23 15:24:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:56,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:56,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:24:56,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:56,831 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 5 [2022-11-23 15:24:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:56,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:56,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972131773] [2022-11-23 15:24:56,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972131773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:56,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:56,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:24:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640690829] [2022-11-23 15:24:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:24:56,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:24:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:24:56,967 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-11-23 15:24:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:57,540 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2022-11-23 15:24:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:24:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 [2022-11-23 15:24:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:57,546 INFO L225 Difference]: With dead ends: 128 [2022-11-23 15:24:57,546 INFO L226 Difference]: Without dead ends: 128 [2022-11-23 15:24:57,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:24:57,548 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:57,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 465 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:24:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-23 15:24:57,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 90. [2022-11-23 15:24:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 82 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-11-23 15:24:57,565 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 11 [2022-11-23 15:24:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:57,569 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-11-23 15:24:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-11-23 15:24:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-11-23 15:24:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:24:57,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:57,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:57,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:57,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926041, now seen corresponding path program 1 times [2022-11-23 15:24:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:57,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946133528] [2022-11-23 15:24:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:57,784 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 [2022-11-23 15:24:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:57,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:57,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:57,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:24:57,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:57,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:57,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946133528] [2022-11-23 15:24:57,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946133528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:24:57,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492799868] [2022-11-23 15:24:57,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:57,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:24:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:24:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:57,910 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-23 15:24:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:57,941 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2022-11-23 15:24:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:24:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-23 15:24:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:57,943 INFO L225 Difference]: With dead ends: 109 [2022-11-23 15:24:57,944 INFO L226 Difference]: Without dead ends: 109 [2022-11-23 15:24:57,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:57,945 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 33 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:57,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 409 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-23 15:24:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-11-23 15:24:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2022-11-23 15:24:57,964 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 12 [2022-11-23 15:24:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:57,965 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2022-11-23 15:24:57,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-23 15:24:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2022-11-23 15:24:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:24:57,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:57,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:57,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -517230920, now seen corresponding path program 1 times [2022-11-23 15:24:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:58,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391203445] [2022-11-23 15:24:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:58,168 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 [2022-11-23 15:24:58,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:58,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:58,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:24:58,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:58,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:58,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:58,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391203445] [2022-11-23 15:24:58,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391203445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:58,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:58,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:24:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629163290] [2022-11-23 15:24:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:58,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:24:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:24:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:24:58,275 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-23 15:24:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:58,331 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-11-23 15:24:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:24:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-23 15:24:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:58,333 INFO L225 Difference]: With dead ends: 106 [2022-11-23 15:24:58,333 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 15:24:58,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:24:58,344 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 15 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:58,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 15:24:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2022-11-23 15:24:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-11-23 15:24:58,366 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2022-11-23 15:24:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:58,366 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-11-23 15:24:58,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-23 15:24:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-11-23 15:24:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:24:58,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:58,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:58,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1400250303, now seen corresponding path program 1 times [2022-11-23 15:24:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:58,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712538445] [2022-11-23 15:24:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:58,571 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 [2022-11-23 15:24:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:58,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:58,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:24:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:58,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:58,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:58,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712538445] [2022-11-23 15:24:58,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712538445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:58,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:58,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:24:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511390698] [2022-11-23 15:24:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:24:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:24:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:24:58,692 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-23 15:24:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:58,723 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-11-23 15:24:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:24:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-11-23 15:24:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:58,724 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:24:58,725 INFO L226 Difference]: Without dead ends: 100 [2022-11-23 15:24:58,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:24:58,726 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 32 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:58,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:24:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-23 15:24:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2022-11-23 15:24:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 85 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:24:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-11-23 15:24:58,733 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 16 [2022-11-23 15:24:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:58,733 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-11-23 15:24:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-23 15:24:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-11-23 15:24:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:24:58,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:58,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:58,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:58,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1200886583, now seen corresponding path program 1 times [2022-11-23 15:24:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:58,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247946798] [2022-11-23 15:24:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:58,947 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 [2022-11-23 15:24:58,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:58,949 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:58,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:59,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:24:59,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:59,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:24:59,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247946798] [2022-11-23 15:24:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247946798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:59,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:59,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:24:59,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658349855] [2022-11-23 15:24:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:59,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:24:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:24:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:24:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:24:59,117 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:24:59,212 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-11-23 15:24:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:24:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:24:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:24:59,213 INFO L225 Difference]: With dead ends: 106 [2022-11-23 15:24:59,213 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 15:24:59,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:24:59,214 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 14 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:24:59,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 448 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:24:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 15:24:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2022-11-23 15:24:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 91 states have internal predecessors, (97), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:24:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2022-11-23 15:24:59,221 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 17 [2022-11-23 15:24:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:24:59,221 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2022-11-23 15:24:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:24:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2022-11-23 15:24:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:24:59,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:59,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:59,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:59,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:24:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -517345560, now seen corresponding path program 1 times [2022-11-23 15:24:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:24:59,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829004975] [2022-11-23 15:24:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:59,424 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 [2022-11-23 15:24:59,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:24:59,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:24:59,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:24:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:24:59,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:59,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:24:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:59,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:24:59,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829004975] [2022-11-23 15:24:59,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829004975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:24:59,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [664572153] [2022-11-23 15:24:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:59,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:24:59,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:24:59,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:24:59,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 15:24:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:59,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:24:59,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:59,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:24:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:24:59,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [664572153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:24:59,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477186180] [2022-11-23 15:24:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:59,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:24:59,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:24:59,833 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:24:59,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:24:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:59,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:24:59,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:24:59,930 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 [2022-11-23 15:25:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:25:00,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:00,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477186180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:00,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:00,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2022-11-23 15:25:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483044708] [2022-11-23 15:25:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:00,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:25:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:25:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-23 15:25:00,093 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:00,652 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2022-11-23 15:25:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:25:00,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 15:25:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:00,654 INFO L225 Difference]: With dead ends: 133 [2022-11-23 15:25:00,654 INFO L226 Difference]: Without dead ends: 133 [2022-11-23 15:25:00,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:25:00,655 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:00,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 511 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:00,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-23 15:25:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 100. [2022-11-23 15:25:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 90 states have internal predecessors, (96), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2022-11-23 15:25:00,661 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 17 [2022-11-23 15:25:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:00,661 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2022-11-23 15:25:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:00,662 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2022-11-23 15:25:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:25:00,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:00,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:00,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:00,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:01,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:01,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -517345559, now seen corresponding path program 1 times [2022-11-23 15:25:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:01,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217886976] [2022-11-23 15:25:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:01,265 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 [2022-11-23 15:25:01,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:01,266 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:01,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:01,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:25:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:01,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217886976] [2022-11-23 15:25:01,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217886976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:01,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [439731150] [2022-11-23 15:25:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:01,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:01,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:01,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-23 15:25:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:01,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:25:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [439731150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:01,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903945847] [2022-11-23 15:25:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:01,676 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:01,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:25:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:01,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 15:25:01,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:01,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903945847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:01,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:25:01,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-23 15:25:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101710905] [2022-11-23 15:25:01,822 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:25:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:25:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:25:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:25:01,823 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-23 15:25:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:01,921 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2022-11-23 15:25:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:25:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 17 [2022-11-23 15:25:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:01,923 INFO L225 Difference]: With dead ends: 106 [2022-11-23 15:25:01,923 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 15:25:01,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:25:01,924 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 68 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:01,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 558 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:25:01,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 15:25:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-23 15:25:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 93 states have internal predecessors, (99), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2022-11-23 15:25:01,929 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 17 [2022-11-23 15:25:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:01,929 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2022-11-23 15:25:01,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-23 15:25:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2022-11-23 15:25:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 15:25:01,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:01,930 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:01,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:02,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:02,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:02,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:02,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -613690878, now seen corresponding path program 2 times [2022-11-23 15:25:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:02,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153116808] [2022-11-23 15:25:02,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:25:02,544 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 [2022-11-23 15:25:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:02,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:02,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:02,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 15:25:02,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:25:02,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:25:02,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:02,660 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 5 [2022-11-23 15:25:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:02,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:02,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:02,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153116808] [2022-11-23 15:25:02,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153116808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:02,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:02,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:25:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473443026] [2022-11-23 15:25:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:02,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:25:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:25:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:25:02,894 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:03,612 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2022-11-23 15:25:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:25:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-23 15:25:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:03,619 INFO L225 Difference]: With dead ends: 146 [2022-11-23 15:25:03,619 INFO L226 Difference]: Without dead ends: 146 [2022-11-23 15:25:03,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:25:03,620 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 101 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 674 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:25:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-23 15:25:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 102. [2022-11-23 15:25:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.4) internal successors, (98), 92 states have internal predecessors, (98), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2022-11-23 15:25:03,625 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 20 [2022-11-23 15:25:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:03,625 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2022-11-23 15:25:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2022-11-23 15:25:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:25:03,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:03,626 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:03,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:03,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:03,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1347922239, now seen corresponding path program 1 times [2022-11-23 15:25:03,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:03,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964738004] [2022-11-23 15:25:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:03,844 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 [2022-11-23 15:25:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:03,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:03,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (16)] Waiting until timeout for monitored process [2022-11-23 15:25:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:03,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:03,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:04,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:04,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:04,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964738004] [2022-11-23 15:25:04,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964738004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:04,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [442285145] [2022-11-23 15:25:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:04,284 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:04,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-23 15:25:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:25:04,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:04,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:04,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [442285145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:04,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:25:04,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2022-11-23 15:25:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49036500] [2022-11-23 15:25:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:25:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:25:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:25:04,549 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-23 15:25:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:04,615 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2022-11-23 15:25:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:25:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 22 [2022-11-23 15:25:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:04,617 INFO L225 Difference]: With dead ends: 105 [2022-11-23 15:25:04,617 INFO L226 Difference]: Without dead ends: 105 [2022-11-23 15:25:04,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:25:04,618 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 49 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:04,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 425 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:25:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-23 15:25:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2022-11-23 15:25:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 92 states have internal predecessors, (97), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2022-11-23 15:25:04,625 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 22 [2022-11-23 15:25:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:04,625 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2022-11-23 15:25:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-23 15:25:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2022-11-23 15:25:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:25:04,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:04,630 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:04,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:04,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (16)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:05,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1119350744, now seen corresponding path program 1 times [2022-11-23 15:25:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:05,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949240253] [2022-11-23 15:25:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:05,046 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 [2022-11-23 15:25:05,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:05,048 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:05,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:05,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:05,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:05,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949240253] [2022-11-23 15:25:05,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949240253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388766051] [2022-11-23 15:25:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:05,496 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:05,499 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:05,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-23 15:25:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:05,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:05,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:05,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [388766051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411979527] [2022-11-23 15:25:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:05,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:05,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:05,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 15:25:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:05,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 15:25:05,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:05,927 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 [2022-11-23 15:25:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:06,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:06,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411979527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:06,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:06,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2022-11-23 15:25:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690441307] [2022-11-23 15:25:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:25:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:25:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:25:06,124 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:06,596 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-11-23 15:25:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:25:06,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 15:25:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:06,598 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:25:06,598 INFO L226 Difference]: Without dead ends: 100 [2022-11-23 15:25:06,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:06,599 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 74 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:06,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 442 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:25:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-23 15:25:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-23 15:25:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 90 states have internal predecessors, (95), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2022-11-23 15:25:06,603 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 24 [2022-11-23 15:25:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2022-11-23 15:25:06,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2022-11-23 15:25:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:25:06,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:06,604 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:06,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:06,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:07,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:07,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:07,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1119350743, now seen corresponding path program 1 times [2022-11-23 15:25:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:07,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907993040] [2022-11-23 15:25:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:07,206 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 [2022-11-23 15:25:07,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:07,207 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:07,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:07,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:07,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:07,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:07,645 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907993040] [2022-11-23 15:25:07,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907993040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239623652] [2022-11-23 15:25:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:07,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:07,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:07,647 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:07,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-23 15:25:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:07,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:07,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:07,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:07,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [239623652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:07,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201518033] [2022-11-23 15:25:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:07,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:07,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:07,954 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:07,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 15:25:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:08,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:25:08,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:08,125 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 5 [2022-11-23 15:25:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:08,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:08,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201518033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:08,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:08,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8, 8] total 22 [2022-11-23 15:25:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062111838] [2022-11-23 15:25:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:25:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:25:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-23 15:25:08,452 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:09,059 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2022-11-23 15:25:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:25:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 15:25:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:09,061 INFO L225 Difference]: With dead ends: 101 [2022-11-23 15:25:09,061 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 15:25:09,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-11-23 15:25:09,062 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 80 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:09,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 566 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 15:25:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2022-11-23 15:25:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 88 states have internal predecessors, (93), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-23 15:25:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-11-23 15:25:09,067 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 24 [2022-11-23 15:25:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:09,067 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-11-23 15:25:09,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-11-23 15:25:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:25:09,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:09,069 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, 1, 1] [2022-11-23 15:25:09,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:09,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:09,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-11-23 15:25:09,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:09,681 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash -694582635, now seen corresponding path program 1 times [2022-11-23 15:25:09,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:09,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371000555] [2022-11-23 15:25:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:09,682 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 [2022-11-23 15:25:09,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:09,683 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:09,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:09,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:25:09,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:25:09,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:09,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:09,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371000555] [2022-11-23 15:25:09,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371000555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:09,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:09,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:09,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094190884] [2022-11-23 15:25:09,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:09,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:25:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:25:09,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:25:09,823 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:25:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:09,978 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-11-23 15:25:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:25:09,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-23 15:25:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:09,980 INFO L225 Difference]: With dead ends: 104 [2022-11-23 15:25:09,980 INFO L226 Difference]: Without dead ends: 88 [2022-11-23 15:25:09,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:25:09,981 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 172 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:25:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-23 15:25:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2022-11-23 15:25:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 77 states have internal predecessors, (82), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-11-23 15:25:09,985 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 25 [2022-11-23 15:25:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:09,986 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-11-23 15:25:09,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-23 15:25:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-11-23 15:25:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:25:09,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:09,990 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:10,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:10,190 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1170056851, now seen corresponding path program 1 times [2022-11-23 15:25:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:10,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420679404] [2022-11-23 15:25:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:10,192 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 [2022-11-23 15:25:10,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:10,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:10,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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)] Waiting until timeout for monitored process [2022-11-23 15:25:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:10,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:10,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:10,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:10,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420679404] [2022-11-23 15:25:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420679404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1045150441] [2022-11-23 15:25:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:10,586 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:10,591 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:10,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-23 15:25:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:10,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:25:10,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:10,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:10,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1045150441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:10,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:25:10,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2022-11-23 15:25:10,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466381390] [2022-11-23 15:25:10,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:10,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:25:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:10,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:25:10,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:25:10,876 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:10,973 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-11-23 15:25:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:25:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 15:25:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:10,974 INFO L225 Difference]: With dead ends: 84 [2022-11-23 15:25:10,974 INFO L226 Difference]: Without dead ends: 84 [2022-11-23 15:25:10,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:25:10,975 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 69 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:10,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 390 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:25:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-23 15:25:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-23 15:25:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.35) internal successors, (81), 76 states have internal predecessors, (81), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-11-23 15:25:10,979 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 24 [2022-11-23 15:25:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:10,980 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-11-23 15:25:10,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 15:25:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-11-23 15:25:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 15:25:10,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:10,981 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:10,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:11,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-23 15:25:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:11,393 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -591053494, now seen corresponding path program 1 times [2022-11-23 15:25:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:11,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530367143] [2022-11-23 15:25:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:11,394 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 [2022-11-23 15:25:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:11,395 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:11,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (27)] Waiting until timeout for monitored process [2022-11-23 15:25:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:11,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:11,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:11,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:11,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:11,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530367143] [2022-11-23 15:25:11,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530367143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:11,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475357776] [2022-11-23 15:25:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:11,883 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:11,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:11,887 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:11,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-23 15:25:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:12,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:12,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:12,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:12,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [475357776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:12,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618759833] [2022-11-23 15:25:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:12,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:12,241 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:12,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-23 15:25:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:25:12,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:12,402 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 [2022-11-23 15:25:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:12,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:12,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618759833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:12,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:12,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2022-11-23 15:25:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161797236] [2022-11-23 15:25:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:12,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:25:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:25:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:25:12,678 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2022-11-23 15:25:13,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:13,228 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2022-11-23 15:25:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:25:13,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 32 [2022-11-23 15:25:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:13,230 INFO L225 Difference]: With dead ends: 98 [2022-11-23 15:25:13,230 INFO L226 Difference]: Without dead ends: 98 [2022-11-23 15:25:13,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:13,231 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 99 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:13,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 302 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-23 15:25:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2022-11-23 15:25:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 74 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-23 15:25:13,235 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 32 [2022-11-23 15:25:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:13,235 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-23 15:25:13,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2022-11-23 15:25:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-23 15:25:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 15:25:13,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:13,236 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:13,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (27)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:13,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-11-23 15:25:13,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:13,846 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:13,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash -591053493, now seen corresponding path program 1 times [2022-11-23 15:25:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:13,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887563396] [2022-11-23 15:25:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:13,847 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 [2022-11-23 15:25:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:13,848 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:13,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (30)] Waiting until timeout for monitored process [2022-11-23 15:25:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:14,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:14,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:14,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:14,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:14,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887563396] [2022-11-23 15:25:14,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887563396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:14,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108679286] [2022-11-23 15:25:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:14,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:14,335 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:14,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-23 15:25:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:14,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:14,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:14,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [108679286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637617695] [2022-11-23 15:25:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:14,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:14,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:14,697 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:14,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-23 15:25:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:14,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:25:14,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:14,923 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 5 [2022-11-23 15:25:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:15,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:15,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637617695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:15,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:15,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8, 8] total 22 [2022-11-23 15:25:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868241497] [2022-11-23 15:25:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:25:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:25:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-23 15:25:15,335 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2022-11-23 15:25:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:15,971 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-11-23 15:25:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:25:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 32 [2022-11-23 15:25:15,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:15,973 INFO L225 Difference]: With dead ends: 87 [2022-11-23 15:25:15,973 INFO L226 Difference]: Without dead ends: 87 [2022-11-23 15:25:15,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-23 15:25:15,974 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 102 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:15,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 397 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-23 15:25:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2022-11-23 15:25:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-23 15:25:15,977 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 32 [2022-11-23 15:25:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:15,978 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-23 15:25:15,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2022-11-23 15:25:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-23 15:25:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:25:15,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:15,981 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:15,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:16,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-23 15:25:16,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (30)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:16,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:16,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash -320417819, now seen corresponding path program 1 times [2022-11-23 15:25:16,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:16,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323972294] [2022-11-23 15:25:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:16,587 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 [2022-11-23 15:25:16,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:16,588 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:16,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (33)] Waiting until timeout for monitored process [2022-11-23 15:25:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:16,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:16,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:16,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:17,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:17,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323972294] [2022-11-23 15:25:17,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323972294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:17,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2061419167] [2022-11-23 15:25:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:17,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:17,103 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:17,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-23 15:25:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:17,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:25:17,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:17,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:17,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2061419167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:17,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:25:17,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2022-11-23 15:25:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157154199] [2022-11-23 15:25:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:17,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 15:25:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 15:25:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:25:17,484 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:17,568 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-11-23 15:25:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:25:17,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-23 15:25:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:17,570 INFO L225 Difference]: With dead ends: 80 [2022-11-23 15:25:17,570 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 15:25:17,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:25:17,571 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 36 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:17,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 388 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:25:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 15:25:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-23 15:25:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2022-11-23 15:25:17,574 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 37 [2022-11-23 15:25:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:17,575 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2022-11-23 15:25:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2022-11-23 15:25:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 15:25:17,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:17,576 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:17,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (33)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:17,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:17,977 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1194172865, now seen corresponding path program 1 times [2022-11-23 15:25:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:17,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344019029] [2022-11-23 15:25:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:17,980 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 [2022-11-23 15:25:17,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:17,982 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:18,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (35)] Waiting until timeout for monitored process [2022-11-23 15:25:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:18,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:18,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344019029] [2022-11-23 15:25:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344019029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [782362390] [2022-11-23 15:25:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:18,505 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:18,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-23 15:25:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:18,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:18,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:18,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [782362390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030269423] [2022-11-23 15:25:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:18,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:18,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:18,947 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:18,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-23 15:25:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:19,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 15:25:19,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:19,151 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 [2022-11-23 15:25:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:19,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:19,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030269423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:19,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:19,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8, 8, 8] total 23 [2022-11-23 15:25:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079478864] [2022-11-23 15:25:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:19,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:25:19,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:25:19,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-23 15:25:19,464 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:20,141 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-11-23 15:25:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:25:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-23 15:25:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:20,142 INFO L225 Difference]: With dead ends: 116 [2022-11-23 15:25:20,142 INFO L226 Difference]: Without dead ends: 116 [2022-11-23 15:25:20,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:25:20,144 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 129 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:20,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 372 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:25:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-23 15:25:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2022-11-23 15:25:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 86 states have internal predecessors, (93), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2022-11-23 15:25:20,148 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 43 [2022-11-23 15:25:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:20,149 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2022-11-23 15:25:20,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2022-11-23 15:25:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 15:25:20,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:20,150 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:20,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:20,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (35)] Ended with exit code 0 [2022-11-23 15:25:20,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-11-23 15:25:20,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:20,754 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1194172864, now seen corresponding path program 1 times [2022-11-23 15:25:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:20,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773643371] [2022-11-23 15:25:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:20,756 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 [2022-11-23 15:25:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:20,757 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:20,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (38)] Waiting until timeout for monitored process [2022-11-23 15:25:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:20,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:20,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:21,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:21,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773643371] [2022-11-23 15:25:21,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773643371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [6864386] [2022-11-23 15:25:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:21,269 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:21,270 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:21,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-23 15:25:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:21,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:21,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:21,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:21,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [6864386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:21,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655065680] [2022-11-23 15:25:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:21,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:21,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:21,723 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:21,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-23 15:25:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 15:25:21,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:21,995 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 5 [2022-11-23 15:25:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:22,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:22,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655065680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:22,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:22,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8, 8, 8] total 24 [2022-11-23 15:25:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871682230] [2022-11-23 15:25:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:22,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:25:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:25:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:22,501 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:23,189 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-11-23 15:25:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:25:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-23 15:25:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:23,191 INFO L225 Difference]: With dead ends: 98 [2022-11-23 15:25:23,191 INFO L226 Difference]: Without dead ends: 98 [2022-11-23 15:25:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:25:23,192 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 143 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 383 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-23 15:25:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2022-11-23 15:25:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 84 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-11-23 15:25:23,197 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 43 [2022-11-23 15:25:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:23,197 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-11-23 15:25:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-11-23 15:25:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:25:23,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:23,198 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:23,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:23,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-23 15:25:23,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (38)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:23,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:23,804 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1416229891, now seen corresponding path program 1 times [2022-11-23 15:25:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:23,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329573692] [2022-11-23 15:25:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:23,805 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 [2022-11-23 15:25:23,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:23,806 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:23,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (41)] Waiting until timeout for monitored process [2022-11-23 15:25:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:24,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:24,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:24,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:24,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329573692] [2022-11-23 15:25:24,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329573692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:24,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2091032954] [2022-11-23 15:25:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:24,386 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:24,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-23 15:25:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:24,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:24,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:24,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:24,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2091032954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:24,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599337718] [2022-11-23 15:25:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:24,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:24,903 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:24,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-23 15:25:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:25,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:25:25,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:25,157 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 [2022-11-23 15:25:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:25,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:25,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599337718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:25,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:25,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8, 8, 8] total 24 [2022-11-23 15:25:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971300150] [2022-11-23 15:25:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:25,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:25:25,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:25,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:25:25,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:25,540 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:26,317 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2022-11-23 15:25:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 15:25:26,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-11-23 15:25:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:26,319 INFO L225 Difference]: With dead ends: 111 [2022-11-23 15:25:26,319 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 15:25:26,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:25:26,320 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 123 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 372 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:25:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 15:25:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 94. [2022-11-23 15:25:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.2) internal successors, (90), 84 states have internal predecessors, (90), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2022-11-23 15:25:26,327 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 49 [2022-11-23 15:25:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:26,328 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2022-11-23 15:25:26,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2022-11-23 15:25:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:25:26,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:26,329 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:26,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:26,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2022-11-23 15:25:26,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (41)] Ended with exit code 0 [2022-11-23 15:25:26,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:26,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1416229892, now seen corresponding path program 1 times [2022-11-23 15:25:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862583329] [2022-11-23 15:25:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:26,938 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 [2022-11-23 15:25:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:26,939 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:26,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (44)] Waiting until timeout for monitored process [2022-11-23 15:25:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:27,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:27,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:27,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:27,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862583329] [2022-11-23 15:25:27,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862583329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:27,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1477393927] [2022-11-23 15:25:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:27,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:27,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:27,536 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:27,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-23 15:25:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:27,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:27,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:28,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:28,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1477393927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721175606] [2022-11-23 15:25:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:28,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:28,047 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:28,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-23 15:25:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:28,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-23 15:25:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:28,328 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 5 [2022-11-23 15:25:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:28,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:28,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721175606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:28,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-23 15:25:28,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 8, 8, 8] total 25 [2022-11-23 15:25:28,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475968880] [2022-11-23 15:25:28,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:28,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 15:25:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 15:25:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-11-23 15:25:28,922 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:29,768 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2022-11-23 15:25:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 15:25:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-11-23 15:25:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:29,770 INFO L225 Difference]: With dead ends: 96 [2022-11-23 15:25:29,770 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 15:25:29,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:25:29,771 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 160 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:29,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 368 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:25:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 15:25:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2022-11-23 15:25:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 75 states have (on average 1.16) internal successors, (87), 82 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-11-23 15:25:29,776 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 49 [2022-11-23 15:25:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:29,777 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-11-23 15:25:29,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-11-23 15:25:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-23 15:25:29,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:29,778 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:29,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:29,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (44)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:30,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2022-11-23 15:25:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:30,383 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash -662682211, now seen corresponding path program 1 times [2022-11-23 15:25:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:30,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524719739] [2022-11-23 15:25:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:30,385 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 [2022-11-23 15:25:30,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:30,386 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (47)] Waiting until timeout for monitored process [2022-11-23 15:25:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:25:30,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:25:30,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524719739] [2022-11-23 15:25:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524719739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63349931] [2022-11-23 15:25:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:30,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:30,963 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:30,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-11-23 15:25:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:31,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:25:31,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:31,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:31,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63349931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:31,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:25:31,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 21 [2022-11-23 15:25:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108343680] [2022-11-23 15:25:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:31,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:25:31,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:25:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:25:31,491 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:31,635 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-11-23 15:25:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:25:31,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2022-11-23 15:25:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:31,637 INFO L225 Difference]: With dead ends: 96 [2022-11-23 15:25:31,637 INFO L226 Difference]: Without dead ends: 92 [2022-11-23 15:25:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:31,638 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 59 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:31,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 424 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:25:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-23 15:25:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-23 15:25:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 82 states have internal predecessors, (85), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2022-11-23 15:25:31,642 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 51 [2022-11-23 15:25:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:31,643 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2022-11-23 15:25:31,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2022-11-23 15:25:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:25:31,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:31,644 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:31,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (47)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:31,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2022-11-23 15:25:32,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:32,057 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1441011691, now seen corresponding path program 1 times [2022-11-23 15:25:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:32,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680600136] [2022-11-23 15:25:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:32,058 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 [2022-11-23 15:25:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:32,059 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (49)] Waiting until timeout for monitored process [2022-11-23 15:25:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:32,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:32,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:32,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:32,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:32,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680600136] [2022-11-23 15:25:32,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680600136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:32,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [78797287] [2022-11-23 15:25:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:32,587 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:32,591 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:32,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-23 15:25:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:32,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 15:25:32,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:25:33,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:33,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [78797287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:33,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:25:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8] total 24 [2022-11-23 15:25:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500188925] [2022-11-23 15:25:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:25:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:25:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-23 15:25:33,432 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:33,983 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-11-23 15:25:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:25:33,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-11-23 15:25:33,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:33,985 INFO L225 Difference]: With dead ends: 91 [2022-11-23 15:25:33,985 INFO L226 Difference]: Without dead ends: 91 [2022-11-23 15:25:33,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:25:33,986 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 161 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 383 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:25:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-23 15:25:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-23 15:25:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.12) internal successors, (84), 81 states have internal predecessors, (84), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2022-11-23 15:25:33,991 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 52 [2022-11-23 15:25:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:33,991 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2022-11-23 15:25:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-11-23 15:25:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:25:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:33,992 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:33,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:34,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (49)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:34,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:34,396 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:34,397 INFO L85 PathProgramCache]: Analyzing trace with hash 981306151, now seen corresponding path program 1 times [2022-11-23 15:25:34,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789973128] [2022-11-23 15:25:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:34,398 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 [2022-11-23 15:25:34,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:34,399 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:34,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (51)] Waiting until timeout for monitored process [2022-11-23 15:25:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:34,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:34,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:34,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:34,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789973128] [2022-11-23 15:25:34,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789973128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:34,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2108058178] [2022-11-23 15:25:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:34,990 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:34,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:34,991 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-23 15:25:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:35,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 15:25:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:35,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:35,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2108058178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:35,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458692447] [2022-11-23 15:25:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:35,540 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:35,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-23 15:25:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:35,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:25:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:35,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:25:36,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458692447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:36,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:25:36,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2022-11-23 15:25:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838090552] [2022-11-23 15:25:36,218 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:25:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 15:25:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 15:25:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:25:36,220 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:25:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:36,667 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2022-11-23 15:25:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 15:25:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-11-23 15:25:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:36,669 INFO L225 Difference]: With dead ends: 97 [2022-11-23 15:25:36,669 INFO L226 Difference]: Without dead ends: 97 [2022-11-23 15:25:36,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2022-11-23 15:25:36,670 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 108 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:36,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 567 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:25:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-23 15:25:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-23 15:25:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:25:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2022-11-23 15:25:36,675 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 55 [2022-11-23 15:25:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2022-11-23 15:25:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:25:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2022-11-23 15:25:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 15:25:36,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:36,676 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:36,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:36,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (51)] Ended with exit code 0 [2022-11-23 15:25:37,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:37,283 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 842072199, now seen corresponding path program 2 times [2022-11-23 15:25:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722612110] [2022-11-23 15:25:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:25:37,284 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 [2022-11-23 15:25:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:37,285 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:37,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (54)] Waiting until timeout for monitored process [2022-11-23 15:25:37,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 15:25:37,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:25:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-23 15:25:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:37,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-23 15:25:38,041 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2456 (_ BitVec 8)) (v_ArrVal_2454 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2454) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2456)) |c_#memory_int|)) is different from true [2022-11-23 15:25:38,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2022-11-23 15:25:38,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:38,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:38,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 69 [2022-11-23 15:25:38,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:38,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 23 [2022-11-23 15:25:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 15:25:39,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:25:39,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722612110] [2022-11-23 15:25:39,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722612110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:39,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:39,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-23 15:25:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082820982] [2022-11-23 15:25:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 15:25:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 15:25:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=591, Unknown=1, NotChecked=48, Total=702 [2022-11-23 15:25:39,215 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:41,855 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2022-11-23 15:25:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 15:25:41,856 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-11-23 15:25:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:41,857 INFO L225 Difference]: With dead ends: 93 [2022-11-23 15:25:41,857 INFO L226 Difference]: Without dead ends: 93 [2022-11-23 15:25:41,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=1626, Unknown=1, NotChecked=82, Total=1892 [2022-11-23 15:25:41,858 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 73 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:41,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 794 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 595 Invalid, 0 Unknown, 93 Unchecked, 1.5s Time] [2022-11-23 15:25:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-23 15:25:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2022-11-23 15:25:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 77 states have (on average 1.077922077922078) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-11-23 15:25:41,862 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 61 [2022-11-23 15:25:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:41,863 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-11-23 15:25:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:25:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-11-23 15:25:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:25:41,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:41,864 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:41,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (54)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:42,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:25:42,067 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:42,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash -56078083, now seen corresponding path program 1 times [2022-11-23 15:25:42,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:42,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867240633] [2022-11-23 15:25:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:42,068 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 [2022-11-23 15:25:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:42,070 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (55)] Waiting until timeout for monitored process [2022-11-23 15:25:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:42,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:25:42,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:42,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:43,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:25:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867240633] [2022-11-23 15:25:43,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867240633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [874212493] [2022-11-23 15:25:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:25:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:25:43,184 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:25:43,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-11-23 15:25:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:43,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:25:43,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:43,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:43,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [874212493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:43,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115735390] [2022-11-23 15:25:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:43,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:25:43,904 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:25:43,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-23 15:25:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:44,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 15:25:44,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:44,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:25:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:25:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115735390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:25:45,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:25:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 37 [2022-11-23 15:25:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818028181] [2022-11-23 15:25:45,778 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:25:45,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:25:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:25:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:25:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 15:25:45,780 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:25:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:48,171 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2022-11-23 15:25:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 15:25:48,172 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-23 15:25:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:48,173 INFO L225 Difference]: With dead ends: 101 [2022-11-23 15:25:48,173 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 15:25:48,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=616, Invalid=1736, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 15:25:48,175 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 240 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:48,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1172 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:25:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 15:25:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-23 15:25:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 92 states have internal predecessors, (96), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:25:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2022-11-23 15:25:48,178 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 73 [2022-11-23 15:25:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:48,178 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2022-11-23 15:25:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.5945945945945947) internal successors, (96), 37 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 15:25:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2022-11-23 15:25:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:25:48,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:48,179 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:48,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2022-11-23 15:25:48,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (55)] Ended with exit code 0 [2022-11-23 15:25:48,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-11-23 15:25:48,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:25:48,786 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:25:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1943196067, now seen corresponding path program 2 times [2022-11-23 15:25:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:25:48,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856165573] [2022-11-23 15:25:48,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:25:48,787 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 [2022-11-23 15:25:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:25:48,788 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:25:48,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (58)] Waiting until timeout for monitored process [2022-11-23 15:25:49,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:25:49,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:25:49,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-23 15:25:49,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:25:49,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:49,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:49,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:49,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:49,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:49,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-23 15:25:49,771 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3042 (_ BitVec 8)) (v_ArrVal_3040 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3040) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3042)))) is different from true [2022-11-23 15:25:49,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:49,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-23 15:25:50,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:50,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:50,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:25:50,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:25:50,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:50,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-23 15:25:51,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:25:51,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-23 15:25:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-23 15:25:56,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:26:24,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:26:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856165573] [2022-11-23 15:26:24,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856165573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:26:24,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847491582] [2022-11-23 15:26:24,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:26:24,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:26:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:26:24,519 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:26:24,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-23 15:26:26,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:26:26,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:26:26,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-23 15:26:26,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:26:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:26,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:26,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:26,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:26,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-23 15:26:27,028 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3244 (_ BitVec 8)) (v_ArrVal_3040 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3040) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3244)) |c_#memory_int|)) is different from true [2022-11-23 15:26:27,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:26:27,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-23 15:26:27,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:27,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:27,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:27,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:27,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:27,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:26:27,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-23 15:26:27,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:26:27,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-23 15:26:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-23 15:26:27,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:26:30,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [847491582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:26:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042383472] [2022-11-23 15:26:30,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:26:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:26:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:26:30,682 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:26:30,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-23 15:26:32,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:26:32,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:26:32,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-23 15:26:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:26:33,065 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 5 [2022-11-23 15:26:34,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:34,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:34,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:34,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:34,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:34,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-23 15:26:35,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-11-23 15:26:37,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 71 [2022-11-23 15:26:39,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:39,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:39,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:39,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:39,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:26:39,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:26:39,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 85 [2022-11-23 15:26:40,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2022-11-23 15:27:06,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 121 [2022-11-23 15:27:06,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 193 [2022-11-23 15:27:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-23 15:27:14,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:28:15,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042383472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:28:15,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:28:15,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 32] total 62 [2022-11-23 15:28:15,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295577808] [2022-11-23 15:28:15,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:28:15,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-23 15:28:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:28:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-23 15:28:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=10400, Unknown=38, NotChecked=414, Total=11342 [2022-11-23 15:28:15,182 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 62 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 56 states have internal predecessors, (106), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-23 15:28:48,976 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 66 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:29:05,804 WARN L233 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 67 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:29:34,278 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 64 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:29:51,196 WARN L233 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 65 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:30:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:00,316 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2022-11-23 15:30:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 15:30:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 56 states have internal predecessors, (106), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 79 [2022-11-23 15:30:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:00,320 INFO L225 Difference]: With dead ends: 105 [2022-11-23 15:30:00,320 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 15:30:00,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 134 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5534 ImplicationChecksByTransitivity, 230.9s TimeCoverageRelationStatistics Valid=1159, Invalid=16611, Unknown=60, NotChecked=530, Total=18360 [2022-11-23 15:30:00,325 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 215 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:00,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 791 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1004 Invalid, 0 Unknown, 148 Unchecked, 4.3s Time] [2022-11-23 15:30:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 15:30:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-23 15:30:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:30:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-11-23 15:30:00,329 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 79 [2022-11-23 15:30:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:00,329 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-11-23 15:30:00,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 56 states have internal predecessors, (106), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-23 15:30:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-11-23 15:30:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:30:00,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:00,330 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:00,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-23 15:30:00,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (58)] Forceful destruction successful, exit code 0 [2022-11-23 15:30:00,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (59)] Ended with exit code 0 [2022-11-23 15:30:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:30:00,943 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:30:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -826672710, now seen corresponding path program 1 times [2022-11-23 15:30:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:30:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689900727] [2022-11-23 15:30:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:00,944 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 [2022-11-23 15:30:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:30:00,945 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:30:00,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (61)] Waiting until timeout for monitored process [2022-11-23 15:30:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:01,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-23 15:30:01,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:01,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:30:01,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:01,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:01,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:01,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:01,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:01,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:02,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:02,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:03,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:03,319 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3682 (_ BitVec 32)) (v_ArrVal_3680 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3680) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3682)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-23 15:30:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-23 15:30:03,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:03,896 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3692 (_ BitVec 32)) (v_ArrVal_3693 (_ BitVec 32)) (v_ArrVal_3690 (_ BitVec 32)) (v_ArrVal_3691 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3693) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3691) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3692) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3690)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-23 15:30:03,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:03,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:04,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-23 15:30:04,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 15:30:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 15:30:04,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:08,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:30:08,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689900727] [2022-11-23 15:30:08,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689900727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:08,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101871076] [2022-11-23 15:30:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:08,346 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:30:08,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:30:08,351 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:30:08,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2022-11-23 15:30:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-23 15:30:09,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:10,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-23 15:30:10,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:30:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:30:10,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:10,664 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3680 (_ BitVec 32)) (v_ArrVal_3930 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3680) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3930)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-23 15:30:10,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-23 15:30:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:10,879 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3939 (_ BitVec 32)) (v_ArrVal_3937 (_ BitVec 32)) (v_ArrVal_3938 (_ BitVec 32)) (v_ArrVal_3940 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3939) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3940) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3937) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3938)))) is different from true [2022-11-23 15:30:10,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:10,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:30:11,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-11-23 15:30:11,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:30:11,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 15:30:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 15:30:11,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:13,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101871076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818314638] [2022-11-23 15:30:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:13,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:30:13,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:13,587 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:30:13,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-23 15:30:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:14,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-23 15:30:14,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:14,256 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 5 [2022-11-23 15:30:14,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:30:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:15,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 23 [2022-11-23 15:30:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:15,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 23 [2022-11-23 15:30:15,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:15,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 23 [2022-11-23 15:30:15,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:15,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 22 [2022-11-23 15:30:16,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 25 [2022-11-23 15:30:16,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-11-23 15:30:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:16,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2022-11-23 15:30:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2022-11-23 15:30:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2022-11-23 15:30:17,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:17,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 68 [2022-11-23 15:30:18,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2022-11-23 15:30:18,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-11-23 15:30:18,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:18,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-11-23 15:30:19,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-11-23 15:30:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:19,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2022-11-23 15:30:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:21,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 107 [2022-11-23 15:30:21,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2022-11-23 15:30:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:22,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 89 [2022-11-23 15:30:24,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:24,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 97 [2022-11-23 15:30:24,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2022-11-23 15:30:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:29,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 97 [2022-11-23 15:30:30,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:30:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:30:31,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:30:31,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 95 [2022-11-23 15:30:31,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:30:31,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 50 treesize of output 25 [2022-11-23 15:30:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:32,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:43,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818314638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:43,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:30:43,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44, 47] total 95 [2022-11-23 15:30:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579872838] [2022-11-23 15:30:43,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:30:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 15:30:43,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:30:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 15:30:43,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=719, Invalid=15293, Unknown=6, NotChecked=1012, Total=17030 [2022-11-23 15:30:43,469 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 96 states, 95 states have (on average 1.6736842105263159) internal successors, (159), 90 states have internal predecessors, (159), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:31:08,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:13,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:17,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:22,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:24,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:33,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:31:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:44,672 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-11-23 15:31:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-23 15:31:44,674 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.6736842105263159) internal successors, (159), 90 states have internal predecessors, (159), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 80 [2022-11-23 15:31:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:44,675 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:31:44,675 INFO L226 Difference]: Without dead ends: 100 [2022-11-23 15:31:44,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 201 SyntacticMatches, 9 SemanticMatches, 152 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8703 ImplicationChecksByTransitivity, 60.5s TimeCoverageRelationStatistics Valid=1208, Invalid=21148, Unknown=10, NotChecked=1196, Total=23562 [2022-11-23 15:31:44,678 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 508 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 66 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:44,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 817 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2209 Invalid, 6 Unknown, 334 Unchecked, 32.1s Time] [2022-11-23 15:31:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-23 15:31:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-23 15:31:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 91 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:31:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2022-11-23 15:31:44,683 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 80 [2022-11-23 15:31:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:44,684 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2022-11-23 15:31:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.6736842105263159) internal successors, (159), 90 states have internal predecessors, (159), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:31:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2022-11-23 15:31:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:31:44,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:44,686 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:31:44,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2022-11-23 15:31:44,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-23 15:31:45,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (61)] Forceful destruction successful, exit code 0 [2022-11-23 15:31:45,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:31:45,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:31:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 142949917, now seen corresponding path program 1 times [2022-11-23 15:31:45,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:31:45,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007699112] [2022-11-23 15:31:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:45,299 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 [2022-11-23 15:31:45,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:31:45,301 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:31:45,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (64)] Waiting until timeout for monitored process [2022-11-23 15:31:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-23 15:31:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:31:46,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:31:46,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:46,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:46,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:47,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:47,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:47,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:47,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:47,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:48,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:48,536 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4419 (_ BitVec 32)) (v_ArrVal_4418 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_4418) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_4419)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-23 15:31:48,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-23 15:31:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:48,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:49,366 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4428 (_ BitVec 32)) (v_ArrVal_4429 (_ BitVec 32)) (v_ArrVal_4426 (_ BitVec 32)) (v_ArrVal_4427 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_4428) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_4429) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_4426) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_4427)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-23 15:31:49,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:49,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-23 15:31:50,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 15:31:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 15:31:50,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:31:55,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:31:55,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007699112] [2022-11-23 15:31:55,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007699112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:31:55,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [568455720] [2022-11-23 15:31:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:55,743 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:31:55,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:31:55,744 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:31:55,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-23 15:31:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:56,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 153 conjunts are in the unsatisfiable core [2022-11-23 15:31:56,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:31:57,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-23 15:31:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:31:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:31:57,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:57,859 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4418 (_ BitVec 32)) (v_ArrVal_4668 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_4418) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_4668)))) is different from true [2022-11-23 15:31:57,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:57,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-23 15:31:58,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:58,142 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4676 (_ BitVec 32)) (v_ArrVal_4679 (_ BitVec 32)) (v_ArrVal_4677 (_ BitVec 32)) (v_ArrVal_4678 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_4678) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_4679) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_4676) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_4677)))) is different from true [2022-11-23 15:31:58,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:31:58,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-23 15:31:58,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-11-23 15:31:58,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:31:58,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 15:31:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-23 15:31:59,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:32:02,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [568455720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:32:02,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583073756] [2022-11-23 15:32:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:32:02,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:32:02,303 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:32:02,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-23 15:32:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-23 15:32:03,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:32:03,205 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 5 [2022-11-23 15:32:04,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-23 15:32:04,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:04,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:32:04,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:04,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:32:05,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:05,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:32:05,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:05,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 21 [2022-11-23 15:32:05,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:05,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-23 15:32:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:06,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:06,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-23 15:32:06,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:06,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:06,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-23 15:32:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2022-11-23 15:32:07,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:07,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2022-11-23 15:32:08,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 68 [2022-11-23 15:32:08,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:08,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2022-11-23 15:32:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:09,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2022-11-23 15:32:10,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2022-11-23 15:32:10,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:10,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2022-11-23 15:32:11,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:11,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 92 [2022-11-23 15:32:13,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:13,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 55 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 119 [2022-11-23 15:32:13,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-23 15:32:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:15,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 101 [2022-11-23 15:32:17,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:18,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 55 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 107 [2022-11-23 15:32:18,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-23 15:32:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:23,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 55 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 107 [2022-11-23 15:32:26,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:32:26,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:32:26,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:32:26,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 55 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 76 treesize of output 105 [2022-11-23 15:32:27,748 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:32:27,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 57 treesize of output 28 [2022-11-23 15:32:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:28,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:32:42,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583073756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:32:42,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:32:42,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46, 49] total 97 [2022-11-23 15:32:42,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732427733] [2022-11-23 15:32:42,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:32:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-11-23 15:32:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:32:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-11-23 15:32:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=15522, Unknown=6, NotChecked=1020, Total=17292 [2022-11-23 15:32:42,993 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 97 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 91 states have internal predecessors, (160), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:33:15,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:19,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:24,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:28,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:30,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:41,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 15:33:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:33:54,953 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2022-11-23 15:33:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 15:33:54,955 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 91 states have internal predecessors, (160), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 81 [2022-11-23 15:33:54,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:33:54,955 INFO L225 Difference]: With dead ends: 96 [2022-11-23 15:33:54,955 INFO L226 Difference]: Without dead ends: 95 [2022-11-23 15:33:54,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 206 SyntacticMatches, 9 SemanticMatches, 150 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8645 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=1230, Invalid=20532, Unknown=10, NotChecked=1180, Total=22952 [2022-11-23 15:33:54,958 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 386 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 70 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 41.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:33:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 936 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2628 Invalid, 6 Unknown, 308 Unchecked, 41.2s Time] [2022-11-23 15:33:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-23 15:33:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-23 15:33:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 15:33:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-11-23 15:33:54,962 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 81 [2022-11-23 15:33:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:33:54,962 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-11-23 15:33:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.6494845360824741) internal successors, (160), 91 states have internal predecessors, (160), 5 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-23 15:33:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-11-23 15:33:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 15:33:54,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:54,964 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:33:54,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (64)] Forceful destruction successful, exit code 0 [2022-11-23 15:33:55,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-23 15:33:55,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-23 15:33:55,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:33:55,583 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-23 15:33:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2138038455, now seen corresponding path program 1 times [2022-11-23 15:33:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:33:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216890498] [2022-11-23 15:33:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:55,584 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 [2022-11-23 15:33:55,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:33:55,585 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:33:55,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (67)] Waiting until timeout for monitored process [2022-11-23 15:33:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:56,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 15:33:56,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:33:56,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-23 15:33:56,987 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~kobj~2#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~kobj~2#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~kobj~2#1.base| (_ bv0 1))))) is different from true [2022-11-23 15:33:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-23 15:33:56,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:33:57,830 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_65| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_65|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_65| (_ bv0 1))))) is different from false [2022-11-23 15:33:57,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:33:57,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216890498] [2022-11-23 15:33:57,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216890498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:33:57,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827103627] [2022-11-23 15:33:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:57,833 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:33:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:33:57,834 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:33:57,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-23 15:33:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 15:33:59,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:33:59,624 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-23 15:33:59,624 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 17 treesize of output 25 [2022-11-23 15:34:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-23 15:34:00,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:34:00,631 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_68| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_68|))) (= (store |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_68| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-23 15:34:00,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827103627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:34:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760459908] [2022-11-23 15:34:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:34:00,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:34:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:34:00,634 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:34:00,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-23 15:34:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:34:01,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 15:34:01,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:34:01,506 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 13 treesize of output 9 [2022-11-23 15:34:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-23 15:34:01,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:34:02,142 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_71| (_ BitVec 32))) (or (= (store |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_71| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_71|))))) is different from false [2022-11-23 15:34:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760459908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:34:02,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:34:02,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-11-23 15:34:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213615252] [2022-11-23 15:34:02,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:34:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:34:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:34:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:34:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=676, Unknown=4, NotChecked=220, Total=992 [2022-11-23 15:34:02,146 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 25 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-23 15:34:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:34:03,865 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2022-11-23 15:34:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:34:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 88 [2022-11-23 15:34:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:34:03,865 INFO L225 Difference]: With dead ends: 94 [2022-11-23 15:34:03,865 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:34:03,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 472 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 4 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=1301, Unknown=4, NotChecked=308, Total=1806 [2022-11-23 15:34:03,866 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 120 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:34:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 362 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 362 Invalid, 0 Unknown, 63 Unchecked, 1.1s Time] [2022-11-23 15:34:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:34:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:34:03,867 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) [2022-11-23 15:34:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:34:03,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2022-11-23 15:34:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:34:03,867 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:34:03,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.086956521739131) internal successors, (117), 22 states have internal predecessors, (117), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-23 15:34:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:34:03,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:34:03,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2022-11-23 15:34:03,870 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2022-11-23 15:34:03,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2022-11-23 15:34:03,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr6ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE (1 of 25 remaining) [2022-11-23 15:34:03,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr11ASSERT_VIOLATIONMEMORY_FREE (0 of 25 remaining) [2022-11-23 15:34:03,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-23 15:34:04,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (68)] Ended with exit code 0 [2022-11-23 15:34:04,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 (67)] Ended with exit code 0 [2022-11-23 15:34:04,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:34:04,478 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:34:04,480 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:34:04,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:34:04 BoogieIcfgContainer [2022-11-23 15:34:04,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:34:04,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:34:04,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:34:04,484 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:34:04,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:54" (3/4) ... [2022-11-23 15:34:04,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:34:04,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-11-23 15:34:04,495 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2022-11-23 15:34:04,495 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2022-11-23 15:34:04,501 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-11-23 15:34:04,501 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:34:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 15:34:04,502 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:34:04,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:34:04,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:34:04,566 INFO L158 Benchmark]: Toolchain (without parser) took 551276.84ms. Allocated memory was 69.2MB in the beginning and 125.8MB in the end (delta: 56.6MB). Free memory was 45.5MB in the beginning and 30.6MB in the end (delta: 14.9MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,567 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 46.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:34:04,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.48ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 45.2MB in the beginning and 51.0MB in the end (delta: -5.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.09ms. Allocated memory is still 86.0MB. Free memory was 51.0MB in the beginning and 48.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,576 INFO L158 Benchmark]: Boogie Preprocessor took 67.31ms. Allocated memory is still 86.0MB. Free memory was 48.3MB in the beginning and 45.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,576 INFO L158 Benchmark]: RCFGBuilder took 772.92ms. Allocated memory is still 86.0MB. Free memory was 45.8MB in the beginning and 46.7MB in the end (delta: -917.4kB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,579 INFO L158 Benchmark]: TraceAbstraction took 549582.82ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 45.8MB in the beginning and 34.7MB in the end (delta: 11.1MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,579 INFO L158 Benchmark]: Witness Printer took 80.99ms. Allocated memory is still 125.8MB. Free memory was 34.7MB in the beginning and 30.6MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:34:04,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 46.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.48ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 45.2MB in the beginning and 51.0MB in the end (delta: -5.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.09ms. Allocated memory is still 86.0MB. Free memory was 51.0MB in the beginning and 48.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.31ms. Allocated memory is still 86.0MB. Free memory was 48.3MB in the beginning and 45.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 772.92ms. Allocated memory is still 86.0MB. Free memory was 45.8MB in the beginning and 46.7MB in the end (delta: -917.4kB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 549582.82ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 45.8MB in the beginning and 34.7MB in the end (delta: 11.1MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Witness Printer took 80.99ms. Allocated memory is still 125.8MB. Free memory was 34.7MB in the beginning and 30.6MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 90 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 549.5s, OverallIterations: 31, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 254.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 3513 SdHoareTripleChecker+Valid, 87.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3495 mSDsluCounter, 15127 SdHoareTripleChecker+Invalid, 84.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 946 IncrementalHoareTripleChecker+Unchecked, 12843 mSDsCounter, 475 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10679 IncrementalHoareTripleChecker+Invalid, 12112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 475 mSolverCounterUnsat, 2284 mSDtfsCounter, 10679 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4829 GetRequests, 3836 SyntacticMatches, 35 SemanticMatches, 958 ConstructedPredicates, 15 IntricatePredicates, 4 DeprecatedPredicates, 26195 ImplicationChecksByTransitivity, 381.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=9, InterpolantAutomatonStates: 405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 322 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 12.5s SatisfiabilityAnalysisTime, 255.2s InterpolantComputationTime, 2924 NumberOfCodeBlocks, 2910 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 4071 ConstructedInterpolants, 248 QuantifiedInterpolants, 31260 SizeOfPredicates, 1060 NumberOfNonLiveVariables, 17346 ConjunctsInSsa, 2088 ConjunctsInUnsatCore, 100 InterpolantComputations, 24 PerfectInterpolantSequences, 1133/2856 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 15:34:04,826 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 15:34:04,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d8a0e2c-2bce-432a-9e5f-74566078cf4f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE