./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh --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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- 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-2329fc7 [2022-12-14 11:40:37,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:37,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:37,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:37,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:37,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:37,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:37,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:37,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:37,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:37,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:37,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:37,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:37,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:37,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:37,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:37,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:37,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:37,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:37,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:37,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:37,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:37,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:37,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:37,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:37,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:37,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:37,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:37,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:37,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:37,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:37,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:37,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:37,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:37,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:37,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:37,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:37,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:37,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:37,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:37,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:37,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 11:40:37,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:37,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:37,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:37,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:37,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:37,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:37,633 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:37,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:37,634 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:37,634 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:40:37,634 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:37,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:37,634 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:40:37,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:40:37,635 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:37,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:40:37,635 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:40:37,635 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:40:37,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 11:40:37,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 11:40:37,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:37,636 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 11:40:37,637 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:37,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:37,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:37,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:37,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:37,639 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:40:37,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:37,639 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:40:37,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:40:37,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:37,640 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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2022-12-14 11:40:37,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:37,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:37,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:37,844 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:37,844 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:37,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-12-14 11:40:40,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:40,780 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:40,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-12-14 11:40:40,797 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/6fb185127/4432e6e63f6a4940a3735ecb7b50a1c8/FLAG23bf91d9c [2022-12-14 11:40:40,811 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/6fb185127/4432e6e63f6a4940a3735ecb7b50a1c8 [2022-12-14 11:40:40,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:40,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:40,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:40,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:40,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:40,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:40" (1/1) ... [2022-12-14 11:40:40,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31bdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:40, skipping insertion in model container [2022-12-14 11:40:40,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:40" (1/1) ... [2022-12-14 11:40:40,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:40,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:41,213 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-12-14 11:40:41,348 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:40:41,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-12-14 11:40:41,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:41,368 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) [2022-12-14 11:40:41,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78d8db15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:41, skipping insertion in model container [2022-12-14 11:40:41,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:41,369 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 11:40:41,370 INFO L158 Benchmark]: Toolchain (without parser) took 554.80ms. Allocated memory is still 169.9MB. Free memory was 132.0MB in the beginning and 99.0MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 11:40:41,371 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 169.9MB. Free memory was 142.2MB in the beginning and 142.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:40:41,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.86ms. Allocated memory is still 169.9MB. Free memory was 132.0MB in the beginning and 99.0MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 11:40:41,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 169.9MB. Free memory was 142.2MB in the beginning and 142.0MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.86ms. Allocated memory is still 169.9MB. Free memory was 132.0MB in the beginning and 99.0MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh --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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- 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-2329fc7 [2022-12-14 11:40:42,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:40:42,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:40:42,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:40:42,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:40:42,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:40:42,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:40:42,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:40:42,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:40:42,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:40:42,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:40:42,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:40:42,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:40:42,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:40:42,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:40:42,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:40:42,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:40:42,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:40:42,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:40:42,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:40:42,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:40:42,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:40:42,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:40:42,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:40:42,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:40:42,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:40:42,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:40:42,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:40:42,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:40:42,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:40:42,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:40:42,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:40:42,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:40:42,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:40:42,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:40:42,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:40:42,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:40:42,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:40:42,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:40:42,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:40:42,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:40:42,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 11:40:42,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:40:42,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:40:42,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:40:42,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:40:42,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:40:42,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:40:42,994 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:40:42,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:40:42,994 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:40:42,995 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:40:42,995 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:40:42,995 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:40:42,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 11:40:42,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 11:40:42,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:40:42,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:40:42,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:40:42,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 11:40:42,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:40:42,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:40:42,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:40:42,998 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:40:42,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:40:42,998 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:40:42,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:40:42,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:40:42,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:40:42,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:42,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:40:42,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:40:43,000 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:40:43,000 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:40:43,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:40:43,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:40:43,000 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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2022-12-14 11:40:43,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:40:43,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:40:43,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:40:43,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:40:43,243 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:40:43,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-12-14 11:40:45,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:40:46,116 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:40:46,116 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-12-14 11:40:46,133 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/3031a9717/8fc7c055bc754b77a65bd2b3d70f11cc/FLAG84fb11190 [2022-12-14 11:40:46,147 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/data/3031a9717/8fc7c055bc754b77a65bd2b3d70f11cc [2022-12-14 11:40:46,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:40:46,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:40:46,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:46,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:40:46,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:40:46,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40adcea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46, skipping insertion in model container [2022-12-14 11:40:46,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:46,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:40:46,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:46,600 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-12-14 11:40:46,736 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:40:46,737 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-12-14 11:40:46,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:46,753 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 11:40:46,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:40:46,792 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-12-14 11:40:46,847 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:40:46,850 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-12-14 11:40:46,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:46,862 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:40:46,887 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-12-14 11:40:46,952 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:40:46,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-12-14 11:40:46,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:40:46,987 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:40:46,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46 WrapperNode [2022-12-14 11:40:46,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:40:46,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:46,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:40:46,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:40:46,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,111 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3030 [2022-12-14 11:40:47,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:40:47,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:40:47,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:40:47,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:40:47,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,209 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:40:47,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:40:47,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:40:47,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:40:47,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (1/1) ... [2022-12-14 11:40:47,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:40:47,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:40:47,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:40:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:40:47,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:40:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 11:40:47,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:40:47,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 11:40:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:40:47,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:40:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:40:47,455 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:40:47,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:40:47,460 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 11:40:52,071 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:40:52,089 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:40:52,089 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-14 11:40:52,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:52 BoogieIcfgContainer [2022-12-14 11:40:52,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:40:52,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:40:52,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:40:52,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:40:52,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:40:46" (1/3) ... [2022-12-14 11:40:52,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248efa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:52, skipping insertion in model container [2022-12-14 11:40:52,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:46" (2/3) ... [2022-12-14 11:40:52,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248efa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:40:52, skipping insertion in model container [2022-12-14 11:40:52,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:52" (3/3) ... [2022-12-14 11:40:52,102 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2022-12-14 11:40:52,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:40:52,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-12-14 11:40:52,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:40:52,200 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;@3a8da46f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:40:52,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-12-14 11:40:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 11:40:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:40:52,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:52,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:40:52,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:40:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 11:40:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:40:52,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772275279] [2022-12-14 11:40:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:52,229 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 [2022-12-14 11:40:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:40:52,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:40:52,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:52,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:40:52,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:52,379 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 [2022-12-14 11:40:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:52,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:52,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:40:52,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772275279] [2022-12-14 11:40:52,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772275279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:52,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:52,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:52,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686705392] [2022-12-14 11:40:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:40:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:52,432 INFO L87 Difference]: Start difference. First operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:54,775 INFO L93 Difference]: Finished difference Result 2234 states and 3299 transitions. [2022-12-14 11:40:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 11:40:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:54,796 INFO L225 Difference]: With dead ends: 2234 [2022-12-14 11:40:54,796 INFO L226 Difference]: Without dead ends: 2232 [2022-12-14 11:40:54,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:54,799 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 1983 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:54,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2783 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 11:40:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-12-14 11:40:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2054. [2022-12-14 11:40:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1031 states have (on average 2.0417070805043647) internal successors, (2105), 2048 states have internal predecessors, (2105), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 11:40:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3111 transitions. [2022-12-14 11:40:55,028 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3111 transitions. Word has length 3 [2022-12-14 11:40:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:55,028 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3111 transitions. [2022-12-14 11:40:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3111 transitions. [2022-12-14 11:40:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 11:40:55,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:55,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 11:40:55,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:55,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:40:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 11:40:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:40:55,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219213510] [2022-12-14 11:40:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:55,232 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 [2022-12-14 11:40:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:40:55,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:40:55,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:55,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:40:55,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:55,446 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 [2022-12-14 11:40:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:55,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:55,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:40:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219213510] [2022-12-14 11:40:55,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219213510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:55,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:55,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:40:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254927496] [2022-12-14 11:40:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:40:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:40:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:40:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:55,458 INFO L87 Difference]: Start difference. First operand 2054 states and 3111 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:40:58,877 INFO L93 Difference]: Finished difference Result 3462 states and 5551 transitions. [2022-12-14 11:40:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:40:58,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 11:40:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:40:58,895 INFO L225 Difference]: With dead ends: 3462 [2022-12-14 11:40:58,895 INFO L226 Difference]: Without dead ends: 3462 [2022-12-14 11:40:58,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:40:58,896 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 1440 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:40:58,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5496 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 11:40:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-12-14 11:40:59,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3176. [2022-12-14 11:40:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1654 states have (on average 2.0151148730350665) internal successors, (3333), 3170 states have internal predecessors, (3333), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:40:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5339 transitions. [2022-12-14 11:40:59,268 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5339 transitions. Word has length 3 [2022-12-14 11:40:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:40:59,268 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5339 transitions. [2022-12-14 11:40:59,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:40:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5339 transitions. [2022-12-14 11:40:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:40:59,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:40:59,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:40:59,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:40:59,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:59,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:40:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:40:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 11:40:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:40:59,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681876759] [2022-12-14 11:40:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:40:59,472 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 [2022-12-14 11:40:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:40:59,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:40:59,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:40:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:40:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 11:40:59,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:40:59,575 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 [2022-12-14 11:40:59,580 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 [2022-12-14 11:40:59,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:40:59,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 11:40:59,639 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 11:40:59,639 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 11:40:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:40:59,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:40:59,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:40:59,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681876759] [2022-12-14 11:40:59,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681876759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:40:59,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:40:59,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:40:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240663052] [2022-12-14 11:40:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:40:59,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:40:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:40:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:40:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:40:59,660 INFO L87 Difference]: Start difference. First operand 3176 states and 5339 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-12-14 11:41:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:03,511 INFO L93 Difference]: Finished difference Result 3343 states and 5514 transitions. [2022-12-14 11:41:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 11:41:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:03,522 INFO L225 Difference]: With dead ends: 3343 [2022-12-14 11:41:03,522 INFO L226 Difference]: Without dead ends: 3343 [2022-12-14 11:41:03,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:03,523 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 2255 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:03,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 2451 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 11:41:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-12-14 11:41:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2043. [2022-12-14 11:41:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1031 states have (on average 2.0300678952473326) internal successors, (2093), 2037 states have internal predecessors, (2093), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 11:41:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3099 transitions. [2022-12-14 11:41:03,836 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3099 transitions. Word has length 7 [2022-12-14 11:41:03,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:03,836 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3099 transitions. [2022-12-14 11:41:03,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-12-14 11:41:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3099 transitions. [2022-12-14 11:41:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:41:03,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:03,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:03,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:04,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:04,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 11:41:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:04,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800100978] [2022-12-14 11:41:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:04,040 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 [2022-12-14 11:41:04,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:04,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:04,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:04,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:41:04,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:04,131 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 [2022-12-14 11:41:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:04,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:04,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:04,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800100978] [2022-12-14 11:41:04,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800100978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:04,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:04,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:41:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933060319] [2022-12-14 11:41:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:04,144 INFO L87 Difference]: Start difference. First operand 2043 states and 3099 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 11:41:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:06,340 INFO L93 Difference]: Finished difference Result 3209 states and 5286 transitions. [2022-12-14 11:41:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:41:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:06,352 INFO L225 Difference]: With dead ends: 3209 [2022-12-14 11:41:06,353 INFO L226 Difference]: Without dead ends: 3209 [2022-12-14 11:41:06,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:06,353 INFO L413 NwaCegarLoop]: 4864 mSDtfsCounter, 1802 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:06,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7121 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 11:41:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-12-14 11:41:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1996. [2022-12-14 11:41:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1031 states have (on average 1.9844810863239573) internal successors, (2046), 1990 states have internal predecessors, (2046), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 11:41:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3052 transitions. [2022-12-14 11:41:06,569 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3052 transitions. Word has length 8 [2022-12-14 11:41:06,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:06,570 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 3052 transitions. [2022-12-14 11:41:06,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 11:41:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3052 transitions. [2022-12-14 11:41:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:41:06,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:06,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:06,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:06,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 11:41:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:06,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643096638] [2022-12-14 11:41:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:06,772 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 [2022-12-14 11:41:06,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:06,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:06,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:06,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:41:06,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:06,860 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 [2022-12-14 11:41:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:06,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:06,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643096638] [2022-12-14 11:41:06,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643096638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:06,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:06,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:41:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709656451] [2022-12-14 11:41:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:06,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:06,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:06,882 INFO L87 Difference]: Start difference. First operand 1996 states and 3052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 11:41:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:09,781 INFO L93 Difference]: Finished difference Result 3274 states and 5354 transitions. [2022-12-14 11:41:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:41:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:09,789 INFO L225 Difference]: With dead ends: 3274 [2022-12-14 11:41:09,789 INFO L226 Difference]: Without dead ends: 3274 [2022-12-14 11:41:09,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:09,790 INFO L413 NwaCegarLoop]: 5056 mSDtfsCounter, 1489 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:09,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7477 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 11:41:09,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-12-14 11:41:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2018. [2022-12-14 11:41:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1063 states have (on average 1.9774223894637817) internal successors, (2102), 2012 states have internal predecessors, (2102), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 11:41:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3108 transitions. [2022-12-14 11:41:09,982 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3108 transitions. Word has length 8 [2022-12-14 11:41:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:09,982 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3108 transitions. [2022-12-14 11:41:09,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-14 11:41:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3108 transitions. [2022-12-14 11:41:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:41:09,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:09,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:09,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:10,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:10,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr430REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash 696609462, now seen corresponding path program 1 times [2022-12-14 11:41:10,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:10,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545680303] [2022-12-14 11:41:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:10,185 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 [2022-12-14 11:41:10,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:10,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:10,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:41:10,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:10,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:10,312 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:10,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545680303] [2022-12-14 11:41:10,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545680303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:10,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:10,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746423767] [2022-12-14 11:41:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:10,314 INFO L87 Difference]: Start difference. First operand 2018 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:10,622 INFO L93 Difference]: Finished difference Result 3485 states and 5610 transitions. [2022-12-14 11:41:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 11:41:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:10,631 INFO L225 Difference]: With dead ends: 3485 [2022-12-14 11:41:10,631 INFO L226 Difference]: Without dead ends: 3485 [2022-12-14 11:41:10,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:10,632 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 1560 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:10,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:41:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-12-14 11:41:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3192. [2022-12-14 11:41:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 1737 states have (on average 1.9568221070811744) internal successors, (3399), 3186 states have internal predecessors, (3399), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5405 transitions. [2022-12-14 11:41:10,863 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5405 transitions. Word has length 11 [2022-12-14 11:41:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:10,863 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 5405 transitions. [2022-12-14 11:41:10,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5405 transitions. [2022-12-14 11:41:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:41:10,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:10,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:10,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:11,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:11,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 11:41:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:11,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835623790] [2022-12-14 11:41:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:11,070 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 [2022-12-14 11:41:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:11,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:11,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:11,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:41:11,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:11,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:11,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:11,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835623790] [2022-12-14 11:41:11,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835623790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:11,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:11,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083088073] [2022-12-14 11:41:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:11,176 INFO L87 Difference]: Start difference. First operand 3192 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 11:41:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:11,225 INFO L93 Difference]: Finished difference Result 3346 states and 5545 transitions. [2022-12-14 11:41:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 11:41:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:11,237 INFO L225 Difference]: With dead ends: 3346 [2022-12-14 11:41:11,237 INFO L226 Difference]: Without dead ends: 3346 [2022-12-14 11:41:11,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:11,238 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 1394 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:11,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-12-14 11:41:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-12-14 11:41:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-12-14 11:41:11,469 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 13 [2022-12-14 11:41:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:11,470 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-12-14 11:41:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-14 11:41:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-12-14 11:41:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:41:11,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:11,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:11,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:11,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:11,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash -579444504, now seen corresponding path program 1 times [2022-12-14 11:41:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:11,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986050181] [2022-12-14 11:41:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:11,672 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 [2022-12-14 11:41:11,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:11,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:11,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:11,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:41:11,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:11,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:41:11,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:41:11,809 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 29 treesize of output 38 [2022-12-14 11:41:11,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:41:11,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-12-14 11:41:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:11,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:11,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:11,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986050181] [2022-12-14 11:41:11,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986050181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:11,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:11,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:11,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447676516] [2022-12-14 11:41:11,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:11,867 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-14 11:41:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:14,669 INFO L93 Difference]: Finished difference Result 5449 states and 9667 transitions. [2022-12-14 11:41:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:14,670 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 11:41:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:14,685 INFO L225 Difference]: With dead ends: 5449 [2022-12-14 11:41:14,685 INFO L226 Difference]: Without dead ends: 5449 [2022-12-14 11:41:14,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:14,685 INFO L413 NwaCegarLoop]: 3457 mSDtfsCounter, 1333 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 9264 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 9264 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 11:41:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-12-14 11:41:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 3131. [2022-12-14 11:41:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1700 states have (on average 1.9476470588235295) internal successors, (3311), 3125 states have internal predecessors, (3311), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5317 transitions. [2022-12-14 11:41:15,043 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5317 transitions. Word has length 14 [2022-12-14 11:41:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:15,044 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5317 transitions. [2022-12-14 11:41:15,044 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), 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) [2022-12-14 11:41:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5317 transitions. [2022-12-14 11:41:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 11:41:15,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:15,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:15,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:15,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:15,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 11:41:15,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:15,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651816553] [2022-12-14 11:41:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:15,247 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 [2022-12-14 11:41:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:15,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:15,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (10)] Waiting until timeout for monitored process [2022-12-14 11:41:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:41:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:15,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:15,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:15,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651816553] [2022-12-14 11:41:15,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651816553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:15,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:15,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711456892] [2022-12-14 11:41:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:41:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:41:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:15,383 INFO L87 Difference]: Start difference. First operand 3131 states and 5317 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 11:41:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:15,421 INFO L93 Difference]: Finished difference Result 3071 states and 5231 transitions. [2022-12-14 11:41:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:41:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 11:41:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:15,430 INFO L225 Difference]: With dead ends: 3071 [2022-12-14 11:41:15,430 INFO L226 Difference]: Without dead ends: 3071 [2022-12-14 11:41:15,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:41:15,431 INFO L413 NwaCegarLoop]: 2952 mSDtfsCounter, 1931 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:15,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 3479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-12-14 11:41:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-12-14 11:41:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1664 states have (on average 1.9381009615384615) internal successors, (3225), 3065 states have internal predecessors, (3225), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5231 transitions. [2022-12-14 11:41:15,627 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5231 transitions. Word has length 18 [2022-12-14 11:41:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:15,627 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5231 transitions. [2022-12-14 11:41:15,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 11:41:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5231 transitions. [2022-12-14 11:41:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 11:41:15,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:15,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:15,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (10)] Forceful destruction successful, exit code 0 [2022-12-14 11:41:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:15,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 11:41:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:15,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682779468] [2022-12-14 11:41:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:15,831 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 [2022-12-14 11:41:15,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:15,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:15,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 11:41:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:16,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:41:16,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:16,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:16,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682779468] [2022-12-14 11:41:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682779468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:16,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:16,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:16,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78816693] [2022-12-14 11:41:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:16,089 INFO L87 Difference]: Start difference. First operand 3071 states and 5231 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-14 11:41:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:16,147 INFO L93 Difference]: Finished difference Result 3043 states and 5175 transitions. [2022-12-14 11:41:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:16,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 11:41:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:16,154 INFO L225 Difference]: With dead ends: 3043 [2022-12-14 11:41:16,155 INFO L226 Difference]: Without dead ends: 3043 [2022-12-14 11:41:16,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:16,155 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1912 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:16,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6334 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-12-14 11:41:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3041. [2022-12-14 11:41:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1648 states have (on average 1.9217233009708738) internal successors, (3167), 3035 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 5173 transitions. [2022-12-14 11:41:16,360 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 5173 transitions. Word has length 20 [2022-12-14 11:41:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:16,361 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 5173 transitions. [2022-12-14 11:41:16,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-14 11:41:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 5173 transitions. [2022-12-14 11:41:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:41:16,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:16,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:16,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 11:41:16,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:16,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 11:41:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:16,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843176734] [2022-12-14 11:41:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:16,563 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 [2022-12-14 11:41:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:16,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:16,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:16,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:41:16,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:16,691 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 [2022-12-14 11:41:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:16,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:16,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:16,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843176734] [2022-12-14 11:41:16,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843176734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:16,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:16,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21130046] [2022-12-14 11:41:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:16,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:16,760 INFO L87 Difference]: Start difference. First operand 3041 states and 5173 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:20,503 INFO L93 Difference]: Finished difference Result 5472 states and 9669 transitions. [2022-12-14 11:41:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:41:20,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 11:41:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:20,516 INFO L225 Difference]: With dead ends: 5472 [2022-12-14 11:41:20,516 INFO L226 Difference]: Without dead ends: 5472 [2022-12-14 11:41:20,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:20,517 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 3438 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:20,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 6500 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 11:41:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-12-14 11:41:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3037. [2022-12-14 11:41:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 1648 states have (on average 1.916868932038835) internal successors, (3159), 3031 states have internal predecessors, (3159), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 5165 transitions. [2022-12-14 11:41:20,878 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 5165 transitions. Word has length 34 [2022-12-14 11:41:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:20,879 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 5165 transitions. [2022-12-14 11:41:20,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:20,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 5165 transitions. [2022-12-14 11:41:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 11:41:20,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:20,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:20,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 11:41:21,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:21,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 11:41:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:21,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333774695] [2022-12-14 11:41:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:21,081 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 [2022-12-14 11:41:21,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:21,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:21,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (13)] Waiting until timeout for monitored process [2022-12-14 11:41:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:41:21,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:21,203 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 [2022-12-14 11:41:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:21,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:21,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:21,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333774695] [2022-12-14 11:41:21,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333774695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:21,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:21,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897673484] [2022-12-14 11:41:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:21,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:21,344 INFO L87 Difference]: Start difference. First operand 3037 states and 5165 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:26,237 INFO L93 Difference]: Finished difference Result 5529 states and 9691 transitions. [2022-12-14 11:41:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:41:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 11:41:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:26,247 INFO L225 Difference]: With dead ends: 5529 [2022-12-14 11:41:26,247 INFO L226 Difference]: Without dead ends: 5529 [2022-12-14 11:41:26,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:26,247 INFO L413 NwaCegarLoop]: 5150 mSDtfsCounter, 2908 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:26,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10076 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-14 11:41:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-12-14 11:41:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3033. [2022-12-14 11:41:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1648 states have (on average 1.9120145631067962) internal successors, (3151), 3027 states have internal predecessors, (3151), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5157 transitions. [2022-12-14 11:41:26,598 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5157 transitions. Word has length 34 [2022-12-14 11:41:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:26,598 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5157 transitions. [2022-12-14 11:41:26,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:41:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5157 transitions. [2022-12-14 11:41:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 11:41:26,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:26,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:26,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (13)] Ended with exit code 0 [2022-12-14 11:41:26,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:26,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:26,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 11:41:26,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:26,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853413287] [2022-12-14 11:41:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:26,801 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 [2022-12-14 11:41:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:26,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:26,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 11:41:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:26,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:41:27,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:27,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:27,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:27,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853413287] [2022-12-14 11:41:27,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853413287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:27,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:27,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932852876] [2022-12-14 11:41:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:27,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:27,038 INFO L87 Difference]: Start difference. First operand 3033 states and 5157 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-14 11:41:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:27,112 INFO L93 Difference]: Finished difference Result 3021 states and 5137 transitions. [2022-12-14 11:41:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-12-14 11:41:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:27,117 INFO L225 Difference]: With dead ends: 3021 [2022-12-14 11:41:27,117 INFO L226 Difference]: Without dead ends: 3021 [2022-12-14 11:41:27,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:27,118 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1881 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:27,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-12-14 11:41:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-12-14 11:41:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1636 states have (on average 1.9138141809290954) internal successors, (3131), 3015 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5137 transitions. [2022-12-14 11:41:27,298 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5137 transitions. Word has length 52 [2022-12-14 11:41:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:27,298 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 5137 transitions. [2022-12-14 11:41:27,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-12-14 11:41:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5137 transitions. [2022-12-14 11:41:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:41:27,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:27,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:27,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 11:41:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:27,500 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 11:41:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:27,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761740267] [2022-12-14 11:41:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:27,501 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 [2022-12-14 11:41:27,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:27,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:27,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:27,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 11:41:27,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:27,779 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 [2022-12-14 11:41:27,783 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 [2022-12-14 11:41:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:41:28,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 11:41:28,128 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 11:41:28,128 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 11:41:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:28,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:28,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:28,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761740267] [2022-12-14 11:41:28,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761740267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:28,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:28,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:41:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405262431] [2022-12-14 11:41:28,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:28,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:28,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:28,144 INFO L87 Difference]: Start difference. First operand 3021 states and 5137 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 11:41:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:31,918 INFO L93 Difference]: Finished difference Result 5223 states and 9398 transitions. [2022-12-14 11:41:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 11:41:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:31,930 INFO L225 Difference]: With dead ends: 5223 [2022-12-14 11:41:31,931 INFO L226 Difference]: Without dead ends: 5223 [2022-12-14 11:41:31,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:31,931 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2770 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3773 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:31,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3773 Valid, 4221 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 11:41:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-12-14 11:41:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 2951. [2022-12-14 11:41:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2945 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5033 transitions. [2022-12-14 11:41:32,270 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5033 transitions. Word has length 60 [2022-12-14 11:41:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5033 transitions. [2022-12-14 11:41:32,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 11:41:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5033 transitions. [2022-12-14 11:41:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:41:32,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:32,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:32,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:32,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:32,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 11:41:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:32,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855106822] [2022-12-14 11:41:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:32,474 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 [2022-12-14 11:41:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:32,475 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:32,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:41:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:32,692 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 [2022-12-14 11:41:32,701 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 [2022-12-14 11:41:32,723 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 23 treesize of output 11 [2022-12-14 11:41:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:32,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:32,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855106822] [2022-12-14 11:41:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855106822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:32,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:32,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425610157] [2022-12-14 11:41:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:41:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:41:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:32,733 INFO L87 Difference]: Start difference. First operand 2951 states and 5033 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 11:41:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:34,698 INFO L93 Difference]: Finished difference Result 2950 states and 5032 transitions. [2022-12-14 11:41:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:41:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 11:41:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:34,704 INFO L225 Difference]: With dead ends: 2950 [2022-12-14 11:41:34,704 INFO L226 Difference]: Without dead ends: 2950 [2022-12-14 11:41:34,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:41:34,704 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 4 mSDsluCounter, 7345 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:34,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10206 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 11:41:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-12-14 11:41:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-12-14 11:41:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8865336658354115) internal successors, (3026), 2944 states have internal predecessors, (3026), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5032 transitions. [2022-12-14 11:41:34,882 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5032 transitions. Word has length 65 [2022-12-14 11:41:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5032 transitions. [2022-12-14 11:41:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 11:41:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5032 transitions. [2022-12-14 11:41:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:41:34,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:34,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:34,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 11:41:35,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:35,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 11:41:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107344424] [2022-12-14 11:41:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:35,088 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 [2022-12-14 11:41:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:35,091 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:35,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (17)] Waiting until timeout for monitored process [2022-12-14 11:41:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:35,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:41:35,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:35,440 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 [2022-12-14 11:41:35,452 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 [2022-12-14 11:41:35,459 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 [2022-12-14 11:41:35,494 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 21 treesize of output 9 [2022-12-14 11:41:35,499 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 19 treesize of output 7 [2022-12-14 11:41:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:35,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:35,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107344424] [2022-12-14 11:41:35,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107344424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:35,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:35,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606370662] [2022-12-14 11:41:35,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:41:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:41:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:35,513 INFO L87 Difference]: Start difference. First operand 2950 states and 5032 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 11:41:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:38,327 INFO L93 Difference]: Finished difference Result 2949 states and 5031 transitions. [2022-12-14 11:41:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:41:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 11:41:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:38,332 INFO L225 Difference]: With dead ends: 2949 [2022-12-14 11:41:38,332 INFO L226 Difference]: Without dead ends: 2949 [2022-12-14 11:41:38,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:41:38,332 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:38,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10242 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-14 11:41:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-12-14 11:41:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-12-14 11:41:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1603 states have (on average 1.8870867124142234) internal successors, (3025), 2943 states have internal predecessors, (3025), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 11:41:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5031 transitions. [2022-12-14 11:41:38,528 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5031 transitions. Word has length 65 [2022-12-14 11:41:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:38,528 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 5031 transitions. [2022-12-14 11:41:38,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-12-14 11:41:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5031 transitions. [2022-12-14 11:41:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 11:41:38,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:38,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:38,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (17)] Ended with exit code 0 [2022-12-14 11:41:38,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:38,730 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -517931281, now seen corresponding path program 1 times [2022-12-14 11:41:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:38,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576598883] [2022-12-14 11:41:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:38,734 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 [2022-12-14 11:41:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:38,736 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:38,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:38,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:41:38,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:38,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:41:38,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576598883] [2022-12-14 11:41:38,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576598883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:41:38,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:41:38,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:41:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703570430] [2022-12-14 11:41:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:41:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:41:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:41:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:41:38,993 INFO L87 Difference]: Start difference. First operand 2949 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-12-14 11:41:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:39,063 INFO L93 Difference]: Finished difference Result 2952 states and 5035 transitions. [2022-12-14 11:41:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:41:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 73 [2022-12-14 11:41:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:39,075 INFO L225 Difference]: With dead ends: 2952 [2022-12-14 11:41:39,076 INFO L226 Difference]: Without dead ends: 2952 [2022-12-14 11:41:39,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:41:39,076 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:39,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8578 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:41:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-12-14 11:41:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2022-12-14 11:41:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2946 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 11:41:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-12-14 11:41:39,277 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 73 [2022-12-14 11:41:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:39,277 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-12-14 11:41:39,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-12-14 11:41:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-12-14 11:41:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 11:41:39,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:39,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:39,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:39,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:41:39,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:39,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash -563037036, now seen corresponding path program 1 times [2022-12-14 11:41:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:39,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217898924] [2022-12-14 11:41:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:39,479 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 [2022-12-14 11:41:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:39,480 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:39,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (19)] Waiting until timeout for monitored process [2022-12-14 11:41:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:39,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:41:39,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:39,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:39,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217898924] [2022-12-14 11:41:39,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217898924] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2111044891] [2022-12-14 11:41:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:39,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:41:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:41:39,778 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:41:39,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 11:41:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:40,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:41:40,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:40,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:40,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2111044891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:40,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435921161] [2022-12-14 11:41:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:41:40,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:40,175 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:40,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 11:41:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:41:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:41:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:40,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:40,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435921161] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:40,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:41:40,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 11:41:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113940707] [2022-12-14 11:41:40,446 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:41:40,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:41:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:41:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:41:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:41:40,448 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:41:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:41:40,635 INFO L93 Difference]: Finished difference Result 2964 states and 5052 transitions. [2022-12-14 11:41:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:41:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-12-14 11:41:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:41:40,641 INFO L225 Difference]: With dead ends: 2964 [2022-12-14 11:41:40,641 INFO L226 Difference]: Without dead ends: 2964 [2022-12-14 11:41:40,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:41:40,642 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 9 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:41:40,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11436 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:41:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-12-14 11:41:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2022-12-14 11:41:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1614 states have (on average 1.885377942998761) internal successors, (3043), 2955 states have internal predecessors, (3043), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 11:41:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5050 transitions. [2022-12-14 11:41:40,896 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5050 transitions. Word has length 74 [2022-12-14 11:41:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:41:40,896 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 5050 transitions. [2022-12-14 11:41:40,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:41:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5050 transitions. [2022-12-14 11:41:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 11:41:40,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:41:40,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:41:40,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (19)] Ended with exit code 0 [2022-12-14 11:41:41,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 11:41:41,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-14 11:41:41,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:41,499 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:41:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:41:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1779056593, now seen corresponding path program 2 times [2022-12-14 11:41:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:41:41,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848919753] [2022-12-14 11:41:41,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:41:41,504 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 [2022-12-14 11:41:41,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:41:41,505 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:41:41,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (22)] Waiting until timeout for monitored process [2022-12-14 11:41:41,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:41:41,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:41:41,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:41:41,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:41,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:42,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:41:42,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848919753] [2022-12-14 11:41:42,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848919753] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:42,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [800385745] [2022-12-14 11:41:42,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:41:42,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:41:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:41:42,078 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:41:42,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 11:41:43,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:41:43,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:41:43,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:41:43,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:41:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:41:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:41:43,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [800385745] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:41:43,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552224132] [2022-12-14 11:41:43,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 11:41:43,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:41:43,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:41:43,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:41:43,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 11:42:11,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 11:42:11,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:42:11,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 11:42:11,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:42:11,819 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 [2022-12-14 11:42:11,829 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 11:42:11,829 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 11:42:11,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:42:11,880 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 [2022-12-14 11:42:12,029 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 22 treesize of output 10 [2022-12-14 11:42:12,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-12-14 11:42:12,108 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 11:42:12,119 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 11:42:12,130 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 11:42:12,141 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1625 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1625) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1624) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 11:42:12,184 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 11:42:12,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 11:42:12,192 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 24 [2022-12-14 11:42:12,261 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 31 treesize of output 13 [2022-12-14 11:42:12,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-12-14 11:42:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-12-14 11:42:12,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:42:12,596 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-12-14 11:42:12,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552224132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:42:12,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 11:42:12,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 11:42:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473058158] [2022-12-14 11:42:12,602 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 11:42:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:42:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:42:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:42:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-12-14 11:42:12,604 INFO L87 Difference]: Start difference. First operand 2962 states and 5050 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:42:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:42:31,626 INFO L93 Difference]: Finished difference Result 5225 states and 9378 transitions. [2022-12-14 11:42:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 11:42:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 11:42:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:42:31,638 INFO L225 Difference]: With dead ends: 5225 [2022-12-14 11:42:31,639 INFO L226 Difference]: Without dead ends: 5219 [2022-12-14 11:42:31,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=421, Invalid=1941, Unknown=10, NotChecked=490, Total=2862 [2022-12-14 11:42:31,640 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 4429 mSDsluCounter, 27949 mSDsCounter, 0 mSdLazyCounter, 9541 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 31012 SdHoareTripleChecker+Invalid, 30976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 9541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20388 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:42:31,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4929 Valid, 31012 Invalid, 30976 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1047 Valid, 9541 Invalid, 0 Unknown, 20388 Unchecked, 17.7s Time] [2022-12-14 11:42:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-12-14 11:42:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 2971. [2022-12-14 11:42:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1623 states have (on average 1.8817005545286507) internal successors, (3054), 2964 states have internal predecessors, (3054), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 11:42:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5061 transitions. [2022-12-14 11:42:32,012 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5061 transitions. Word has length 77 [2022-12-14 11:42:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:42:32,012 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 5061 transitions. [2022-12-14 11:42:32,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:42:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5061 transitions. [2022-12-14 11:42:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 11:42:32,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:42:32,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:42:32,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 (22)] Ended with exit code 0 [2022-12-14 11:42:32,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-12-14 11:42:32,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 11:42:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:42:32,615 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-12-14 11:42:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:42:32,622 INFO L85 PathProgramCache]: Analyzing trace with hash -271518193, now seen corresponding path program 3 times [2022-12-14 11:42:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:42:32,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382795289] [2022-12-14 11:42:32,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:42:32,623 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 [2022-12-14 11:42:32,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:42:32,624 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:42:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:42:33,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 11:42:33,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:42:33,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 11:42:33,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:42:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:42:33,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:42:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:42:34,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:42:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382795289] [2022-12-14 11:42:34,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382795289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:42:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474373711] [2022-12-14 11:42:34,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:42:34,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:42:34,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:42:34,047 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:42:34,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 11:42:38,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 11:42:38,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:42:38,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 11:42:38,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:42:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:42:38,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:42:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:42:38,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1474373711] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:42:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562007787] [2022-12-14 11:42:38,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:42:38,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:42:38,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:42:38,534 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:42:38,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a0fc48-e5d6-4672-9366-1f7ee96b411f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process