./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- 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 14:28:48,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:28:48,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:28:48,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:28:48,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:28:48,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:28:48,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:28:48,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:28:48,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:28:48,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:28:48,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:28:48,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:28:48,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:28:48,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:28:48,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:28:48,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:28:48,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:28:48,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:28:48,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:28:48,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:28:48,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:28:48,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:28:48,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:28:48,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:28:48,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:28:48,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:28:48,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:28:48,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:28:48,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:28:48,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:28:48,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:28:48,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:28:48,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:28:48,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:28:48,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:28:48,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:28:48,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:28:48,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:28:48,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:28:48,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:28:48,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:28:48,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 14:28:48,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:28:48,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:28:48,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:28:48,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:28:48,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:28:48,155 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:28:48,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:28:48,156 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:28:48,156 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:28:48,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:28:48,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:28:48,156 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:28:48,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:28:48,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:28:48,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:28:48,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:28:48,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:28:48,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:28:48,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:28:48,159 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2022-12-14 14:28:48,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:28:48,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:28:48,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:28:48,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:28:48,364 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:28:48,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2022-12-14 14:28:50,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:28:51,204 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:28:51,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2022-12-14 14:28:51,216 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/74db49856/cb1a89de01744ab18fc03b51c418eed6/FLAG210ec838b [2022-12-14 14:28:51,231 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/74db49856/cb1a89de01744ab18fc03b51c418eed6 [2022-12-14 14:28:51,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:28:51,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:28:51,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:28:51,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:28:51,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:28:51,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:51" (1/1) ... [2022-12-14 14:28:51,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1592e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:51, skipping insertion in model container [2022-12-14 14:28:51,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:51" (1/1) ... [2022-12-14 14:28:51,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:28:51,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:28:51,683 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2022-12-14 14:28:51,831 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:28:51,833 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2022-12-14 14:28:51,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:28:51,845 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 14:28:51,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bf4219a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:51, skipping insertion in model container [2022-12-14 14:28:51,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:28:51,846 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 14:28:51,847 INFO L158 Benchmark]: Toolchain (without parser) took 611.90ms. Allocated memory is still 192.9MB. Free memory was 146.2MB in the beginning and 114.0MB in the end (delta: 32.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 14:28:51,848 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 192.9MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:28:51,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.73ms. Allocated memory is still 192.9MB. Free memory was 145.8MB in the beginning and 114.0MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 14:28:51,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 192.9MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.73ms. Allocated memory is still 192.9MB. Free memory was 145.8MB in the beginning and 114.0MB in the end (delta: 31.8MB). 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- 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 14:28:53,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:28:53,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:28:53,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:28:53,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:28:53,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:28:53,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:28:53,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:28:53,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:28:53,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:28:53,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:28:53,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:28:53,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:28:53,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:28:53,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:28:53,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:28:53,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:28:53,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:28:53,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:28:53,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:28:53,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:28:53,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:28:53,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:28:53,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:28:53,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:28:53,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:28:53,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:28:53,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:28:53,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:28:53,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:28:53,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:28:53,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:28:53,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:28:53,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:28:53,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:28:53,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:28:53,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:28:53,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:28:53,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:28:53,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:28:53,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:28:53,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 14:28:53,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:28:53,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:28:53,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:28:53,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:28:53,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:28:53,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:28:53,273 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:28:53,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:28:53,274 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:28:53,274 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:28:53,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:28:53,274 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:28:53,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:28:53,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:28:53,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:28:53,276 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:28:53,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:28:53,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:28:53,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:28:53,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:28:53,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:28:53,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:28:53,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:28:53,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:28:53,279 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:28:53,279 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:28:53,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:28:53,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:28:53,279 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2022-12-14 14:28:53,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:28:53,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:28:53,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:28:53,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:28:53,496 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:28:53,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2022-12-14 14:28:56,044 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:28:56,295 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:28:56,296 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2022-12-14 14:28:56,312 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/a3d96872e/d5d0e233812341258423843730e93a77/FLAG60dcd02ec [2022-12-14 14:28:56,324 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/data/a3d96872e/d5d0e233812341258423843730e93a77 [2022-12-14 14:28:56,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:28:56,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:28:56,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:28:56,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:28:56,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:28:56,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:56" (1/1) ... [2022-12-14 14:28:56,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb3d7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:56, skipping insertion in model container [2022-12-14 14:28:56,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:28:56" (1/1) ... [2022-12-14 14:28:56,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:28:56,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:28:56,773 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2022-12-14 14:28:56,960 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:28:56,963 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2022-12-14 14:28:56,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:28:56,980 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 14:28:56,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:28:57,013 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2022-12-14 14:28:57,115 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:28:57,117 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2022-12-14 14:28:57,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:28:57,124 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:28:57,148 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2022-12-14 14:28:57,220 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 14:28:57,221 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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2022-12-14 14:28:57,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:28:57,253 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:28:57,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57 WrapperNode [2022-12-14 14:28:57,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:28:57,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:28:57,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:28:57,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:28:57,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,360 INFO L138 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2866 [2022-12-14 14:28:57,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:28:57,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:28:57,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:28:57,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:28:57,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:28:57,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:28:57,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:28:57,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:28:57,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (1/1) ... [2022-12-14 14:28:57,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:28:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:57,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:28:57,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:28:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 14:28:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:28:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:28:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:28:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:28:57,675 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:28:57,678 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:28:57,681 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 14:29:01,638 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:29:01,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:29:01,651 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-12-14 14:29:01,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:29:01 BoogieIcfgContainer [2022-12-14 14:29:01,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:29:01,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:29:01,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:29:01,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:29:01,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:28:56" (1/3) ... [2022-12-14 14:29:01,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409d796c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:29:01, skipping insertion in model container [2022-12-14 14:29:01,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:28:57" (2/3) ... [2022-12-14 14:29:01,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409d796c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:29:01, skipping insertion in model container [2022-12-14 14:29:01,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:29:01" (3/3) ... [2022-12-14 14:29:01,660 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-1.i [2022-12-14 14:29:01,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:29:01,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-12-14 14:29:01,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:29:01,729 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;@2c8faa57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:29:01,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-12-14 14:29:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 1871 states, 937 states have (on average 2.1024546424759873) internal successors, (1970), 1865 states have internal predecessors, (1970), 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 14:29:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:29:01,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:01,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:29:01,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 14:29:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:01,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925137633] [2022-12-14 14:29:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:01,753 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 14:29:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:01,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:01,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:01,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:01,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:01,894 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 14:29:01,906 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 14:29:01,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:01,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:01,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925137633] [2022-12-14 14:29:01,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925137633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:01,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:01,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:29:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557077816] [2022-12-14 14:29:01,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:01,951 INFO L87 Difference]: Start difference. First operand has 1871 states, 937 states have (on average 2.1024546424759873) internal successors, (1970), 1865 states have internal predecessors, (1970), 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 14:29:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:03,745 INFO L93 Difference]: Finished difference Result 1858 states and 2903 transitions. [2022-12-14 14:29:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:03,747 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 14:29:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:03,766 INFO L225 Difference]: With dead ends: 1858 [2022-12-14 14:29:03,766 INFO L226 Difference]: Without dead ends: 1856 [2022-12-14 14:29:03,767 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 14:29:03,769 INFO L413 NwaCegarLoop]: 2513 mSDtfsCounter, 1792 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:03,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 2560 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 14:29:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-12-14 14:29:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1855. [2022-12-14 14:29:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 937 states have (on average 2.022411953041622) internal successors, (1895), 1849 states have internal predecessors, (1895), 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 14:29:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2901 transitions. [2022-12-14 14:29:04,001 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2901 transitions. Word has length 3 [2022-12-14 14:29:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:04,001 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 2901 transitions. [2022-12-14 14:29:04,001 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 14:29:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2901 transitions. [2022-12-14 14:29:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 14:29:04,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:04,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 14:29:04,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:04,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 14:29:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:04,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610516501] [2022-12-14 14:29:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:04,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:29:04,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:04,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:04,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:04,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:04,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:04,426 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 14:29:04,436 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 14:29:04,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:04,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610516501] [2022-12-14 14:29:04,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610516501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:04,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:04,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:29:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381362125] [2022-12-14 14:29:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:04,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:04,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:04,439 INFO L87 Difference]: Start difference. First operand 1855 states and 2901 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 14:29:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:07,095 INFO L93 Difference]: Finished difference Result 3064 states and 5131 transitions. [2022-12-14 14:29:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:07,096 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 14:29:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:07,110 INFO L225 Difference]: With dead ends: 3064 [2022-12-14 14:29:07,111 INFO L226 Difference]: Without dead ends: 3064 [2022-12-14 14:29:07,111 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 14:29:07,111 INFO L413 NwaCegarLoop]: 3301 mSDtfsCounter, 1230 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 5268 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 14:29:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-12-14 14:29:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2977. [2022-12-14 14:29:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 1560 states have (on average 2.001923076923077) internal successors, (3123), 2971 states have internal predecessors, (3123), 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 14:29:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 5129 transitions. [2022-12-14 14:29:07,327 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 5129 transitions. Word has length 3 [2022-12-14 14:29:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:07,327 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 5129 transitions. [2022-12-14 14:29:07,327 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 14:29:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 5129 transitions. [2022-12-14 14:29:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:29:07,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:07,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:07,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:07,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:07,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 14:29:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:07,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62165277] [2022-12-14 14:29:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:07,529 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 14:29:07,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:07,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:07,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:29:07,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:07,616 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 14:29:07,620 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 14:29:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:07,663 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 14:29:07,676 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 14:29:07,676 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 14:29:07,696 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 14:29:07,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:07,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:07,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62165277] [2022-12-14 14:29:07,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62165277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:07,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:07,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267408475] [2022-12-14 14:29:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:07,698 INFO L87 Difference]: Start difference. First operand 2977 states and 5129 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 14:29:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:10,943 INFO L93 Difference]: Finished difference Result 2967 states and 5118 transitions. [2022-12-14 14:29:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:10,944 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 14:29:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:10,956 INFO L225 Difference]: With dead ends: 2967 [2022-12-14 14:29:10,956 INFO L226 Difference]: Without dead ends: 2967 [2022-12-14 14:29:10,956 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 14:29:10,957 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 3640 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:10,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4143 Valid, 2316 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 14:29:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-12-14 14:29:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1844. [2022-12-14 14:29:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 937 states have (on average 2.0096051227321237) internal successors, (1883), 1838 states have internal predecessors, (1883), 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 14:29:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2889 transitions. [2022-12-14 14:29:11,171 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2889 transitions. Word has length 7 [2022-12-14 14:29:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:11,171 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2889 transitions. [2022-12-14 14:29:11,171 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 14:29:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2889 transitions. [2022-12-14 14:29:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:29:11,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:11,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:11,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:11,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 14:29:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669196453] [2022-12-14 14:29:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:11,378 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 14:29:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:11,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:11,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:11,510 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 14:29:11,517 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 14:29:11,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:11,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:11,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669196453] [2022-12-14 14:29:11,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669196453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:11,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:11,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:29:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408275135] [2022-12-14 14:29:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:11,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:11,518 INFO L87 Difference]: Start difference. First operand 1844 states and 2889 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 14:29:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:13,164 INFO L93 Difference]: Finished difference Result 3010 states and 5076 transitions. [2022-12-14 14:29:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:13,165 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 14:29:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:13,172 INFO L225 Difference]: With dead ends: 3010 [2022-12-14 14:29:13,172 INFO L226 Difference]: Without dead ends: 3010 [2022-12-14 14:29:13,172 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 14:29:13,173 INFO L413 NwaCegarLoop]: 4653 mSDtfsCounter, 1802 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 6809 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:13,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 6809 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 14:29:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-12-14 14:29:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1797. [2022-12-14 14:29:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 937 states have (on average 1.959445037353255) internal successors, (1836), 1791 states have internal predecessors, (1836), 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 14:29:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2842 transitions. [2022-12-14 14:29:13,386 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2842 transitions. Word has length 8 [2022-12-14 14:29:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:13,387 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2842 transitions. [2022-12-14 14:29:13,387 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 14:29:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2842 transitions. [2022-12-14 14:29:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:29:13,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:13,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:13,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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)] Forceful destruction successful, exit code 0 [2022-12-14 14:29:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:13,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 14:29:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:13,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900516324] [2022-12-14 14:29:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:13,589 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 14:29:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:13,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:13,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:13,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:13,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:13,690 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 14:29:13,704 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 14:29:13,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:13,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900516324] [2022-12-14 14:29:13,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900516324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:13,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:13,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:29:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162234090] [2022-12-14 14:29:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:13,706 INFO L87 Difference]: Start difference. First operand 1797 states and 2842 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 14:29:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:16,148 INFO L93 Difference]: Finished difference Result 3077 states and 5145 transitions. [2022-12-14 14:29:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:16,149 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 14:29:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:16,157 INFO L225 Difference]: With dead ends: 3077 [2022-12-14 14:29:16,157 INFO L226 Difference]: Without dead ends: 3077 [2022-12-14 14:29:16,157 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 14:29:16,158 INFO L413 NwaCegarLoop]: 4847 mSDtfsCounter, 1491 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 7165 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:16,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 7165 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 14:29:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-12-14 14:29:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1819. [2022-12-14 14:29:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 969 states have (on average 1.9525283797729618) internal successors, (1892), 1813 states have internal predecessors, (1892), 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 14:29:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2898 transitions. [2022-12-14 14:29:16,362 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2898 transitions. Word has length 8 [2022-12-14 14:29:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:16,362 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2898 transitions. [2022-12-14 14:29:16,362 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 14:29:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2898 transitions. [2022-12-14 14:29:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:29:16,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:16,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:16,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:16,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2100681113, now seen corresponding path program 1 times [2022-12-14 14:29:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:16,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793618740] [2022-12-14 14:29:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:16,564 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 14:29:16,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:16,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:16,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:16,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:29:16,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:16,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:16,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:16,684 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 14:29:16,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:16,721 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 14:29:16,742 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 14:29:16,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:16,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:16,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793618740] [2022-12-14 14:29:16,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793618740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:16,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:16,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003165330] [2022-12-14 14:29:16,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:16,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:16,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:16,744 INFO L87 Difference]: Start difference. First operand 1819 states and 2898 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 14:29:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:19,447 INFO L93 Difference]: Finished difference Result 3030 states and 5129 transitions. [2022-12-14 14:29:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-12-14 14:29:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:19,460 INFO L225 Difference]: With dead ends: 3030 [2022-12-14 14:29:19,460 INFO L226 Difference]: Without dead ends: 3030 [2022-12-14 14:29:19,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 14:29:19,461 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 1228 mSDsluCounter, 5474 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 8762 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:19,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 8762 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 14:29:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-12-14 14:29:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1821. [2022-12-14 14:29:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 971 states have (on average 1.9505664263645726) internal successors, (1894), 1815 states have internal predecessors, (1894), 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 14:29:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2900 transitions. [2022-12-14 14:29:19,635 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2900 transitions. Word has length 10 [2022-12-14 14:29:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:19,635 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2900 transitions. [2022-12-14 14:29:19,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 14:29:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2900 transitions. [2022-12-14 14:29:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:29:19,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:19,635 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 14:29:19,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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)] Forceful destruction successful, exit code 0 [2022-12-14 14:29:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:19,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 14:29:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703255413] [2022-12-14 14:29:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:19,841 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 14:29:19,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:19,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:19,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:29:19,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:19,997 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 14:29:19,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:19,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:19,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703255413] [2022-12-14 14:29:19,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703255413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:19,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:19,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694746282] [2022-12-14 14:29:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:19,999 INFO L87 Difference]: Start difference. First operand 1821 states and 2900 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 14:29:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:20,034 INFO L93 Difference]: Finished difference Result 1790 states and 2868 transitions. [2022-12-14 14:29:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:20,034 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 14:29:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:20,038 INFO L225 Difference]: With dead ends: 1790 [2022-12-14 14:29:20,038 INFO L226 Difference]: Without dead ends: 1790 [2022-12-14 14:29:20,039 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 14:29:20,039 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1764 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 3312 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 14:29:20,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 3312 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:29:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-12-14 14:29:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1779. [2022-12-14 14:29:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 953 states have (on average 1.9422875131164743) internal successors, (1851), 1773 states have internal predecessors, (1851), 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 14:29:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2857 transitions. [2022-12-14 14:29:20,141 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2857 transitions. Word has length 18 [2022-12-14 14:29:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:20,141 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2857 transitions. [2022-12-14 14:29:20,141 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 14:29:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2857 transitions. [2022-12-14 14:29:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 14:29:20,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:20,142 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 14:29:20,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 14:29:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:20,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807606552] [2022-12-14 14:29:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:20,343 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 14:29:20,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:20,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:20,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:20,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:20,469 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 14:29:20,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:20,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:20,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807606552] [2022-12-14 14:29:20,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807606552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:20,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:20,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137152510] [2022-12-14 14:29:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:20,470 INFO L87 Difference]: Start difference. First operand 1779 states and 2857 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 14:29:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:20,544 INFO L93 Difference]: Finished difference Result 1769 states and 2840 transitions. [2022-12-14 14:29:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:20,544 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 14:29:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:20,551 INFO L225 Difference]: With dead ends: 1769 [2022-12-14 14:29:20,551 INFO L226 Difference]: Without dead ends: 1769 [2022-12-14 14:29:20,552 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 14:29:20,552 INFO L413 NwaCegarLoop]: 2740 mSDtfsCounter, 1745 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 6000 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 14:29:20,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 6000 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:29:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-12-14 14:29:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1757. [2022-12-14 14:29:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 945 states have (on average 1.928042328042328) internal successors, (1822), 1751 states have internal predecessors, (1822), 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 14:29:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2828 transitions. [2022-12-14 14:29:20,654 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2828 transitions. Word has length 20 [2022-12-14 14:29:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:20,654 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2828 transitions. [2022-12-14 14:29:20,655 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 14:29:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2828 transitions. [2022-12-14 14:29:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:29:20,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:20,655 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 14:29:20,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 14:29:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945727008] [2022-12-14 14:29:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:20,860 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 14:29:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:20,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:20,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:21,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:21,040 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 14:29:21,097 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 14:29:21,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:21,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:21,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945727008] [2022-12-14 14:29:21,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945727008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:21,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:21,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:21,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905980056] [2022-12-14 14:29:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:21,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:21,099 INFO L87 Difference]: Start difference. First operand 1757 states and 2828 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 14:29:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:23,945 INFO L93 Difference]: Finished difference Result 2977 states and 5069 transitions. [2022-12-14 14:29:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:23,947 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 14:29:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:23,955 INFO L225 Difference]: With dead ends: 2977 [2022-12-14 14:29:23,955 INFO L226 Difference]: Without dead ends: 2977 [2022-12-14 14:29:23,955 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 14:29:23,956 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 3333 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:23,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 6224 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 14:29:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2022-12-14 14:29:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1753. [2022-12-14 14:29:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 945 states have (on average 1.9238095238095239) internal successors, (1818), 1747 states have internal predecessors, (1818), 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 14:29:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2824 transitions. [2022-12-14 14:29:24,145 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2824 transitions. Word has length 34 [2022-12-14 14:29:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:24,145 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 2824 transitions. [2022-12-14 14:29:24,146 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 14:29:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2824 transitions. [2022-12-14 14:29:24,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 14:29:24,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:24,146 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 14:29:24,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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)] Ended with exit code 0 [2022-12-14 14:29:24,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:24,348 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:24,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 14:29:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:24,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652609200] [2022-12-14 14:29:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:24,353 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 14:29:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:24,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:24,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:24,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:29:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:24,589 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 14:29:24,706 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 14:29:24,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:24,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:24,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652609200] [2022-12-14 14:29:24,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652609200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:24,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:24,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101498401] [2022-12-14 14:29:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:24,709 INFO L87 Difference]: Start difference. First operand 1753 states and 2824 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 14:29:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:28,844 INFO L93 Difference]: Finished difference Result 3018 states and 5078 transitions. [2022-12-14 14:29:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:28,846 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 14:29:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:28,851 INFO L225 Difference]: With dead ends: 3018 [2022-12-14 14:29:28,851 INFO L226 Difference]: Without dead ends: 3018 [2022-12-14 14:29:28,851 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 14:29:28,851 INFO L413 NwaCegarLoop]: 3077 mSDtfsCounter, 2786 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 6719 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:28,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 6719 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 14:29:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2022-12-14 14:29:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1749. [2022-12-14 14:29:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 945 states have (on average 1.9195767195767195) internal successors, (1814), 1743 states have internal predecessors, (1814), 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 14:29:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2820 transitions. [2022-12-14 14:29:29,024 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2820 transitions. Word has length 34 [2022-12-14 14:29:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:29,024 INFO L495 AbstractCegarLoop]: Abstraction has 1749 states and 2820 transitions. [2022-12-14 14:29:29,024 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 14:29:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2820 transitions. [2022-12-14 14:29:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 14:29:29,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:29,025 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] [2022-12-14 14:29:29,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-12-14 14:29:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:29,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972446922] [2022-12-14 14:29:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:29,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:29:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:29,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:29,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:29,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:29,443 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 14:29:29,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:29,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:29,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972446922] [2022-12-14 14:29:29,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972446922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:29,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:29,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:29,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265697495] [2022-12-14 14:29:29,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:29,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:29,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:29,444 INFO L87 Difference]: Start difference. First operand 1749 states and 2820 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 14:29:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:29,491 INFO L93 Difference]: Finished difference Result 1754 states and 2821 transitions. [2022-12-14 14:29:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2022-12-14 14:29:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:29,495 INFO L225 Difference]: With dead ends: 1754 [2022-12-14 14:29:29,495 INFO L226 Difference]: Without dead ends: 1754 [2022-12-14 14:29:29,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 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 14:29:29,496 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 1714 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 5978 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 14:29:29,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 5978 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:29:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-12-14 14:29:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1743. [2022-12-14 14:29:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 939 states have (on average 1.9211927582534611) internal successors, (1804), 1737 states have internal predecessors, (1804), 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 14:29:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2810 transitions. [2022-12-14 14:29:29,595 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2810 transitions. Word has length 49 [2022-12-14 14:29:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:29,595 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2810 transitions. [2022-12-14 14:29:29,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 14:29:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2810 transitions. [2022-12-14 14:29:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 14:29:29,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:29,596 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] [2022-12-14 14:29:29,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-12-14 14:29:29,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:29,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803352748] [2022-12-14 14:29:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:29,801 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 14:29:29,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:29,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:29,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:30,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:30,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:30,227 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 14:29:30,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:30,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:30,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803352748] [2022-12-14 14:29:30,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803352748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:30,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:30,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:30,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922014625] [2022-12-14 14:29:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:30,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:29:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:29:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:29:30,229 INFO L87 Difference]: Start difference. First operand 1743 states and 2810 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:29:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:30,361 INFO L93 Difference]: Finished difference Result 2935 states and 5014 transitions. [2022-12-14 14:29:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:29:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-12-14 14:29:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:30,367 INFO L225 Difference]: With dead ends: 2935 [2022-12-14 14:29:30,367 INFO L226 Difference]: Without dead ends: 2935 [2022-12-14 14:29:30,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 14:29:30,367 INFO L413 NwaCegarLoop]: 3371 mSDtfsCounter, 1219 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:30,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 5994 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:29:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-12-14 14:29:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2880. [2022-12-14 14:29:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 1576 states have (on average 1.906725888324873) internal successors, (3005), 2874 states have internal predecessors, (3005), 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 14:29:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 5011 transitions. [2022-12-14 14:29:30,546 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 5011 transitions. Word has length 57 [2022-12-14 14:29:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:30,546 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 5011 transitions. [2022-12-14 14:29:30,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 14:29:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 5011 transitions. [2022-12-14 14:29:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:29:30,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:30,547 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 14:29:30,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:30,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:30,748 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 14:29:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:30,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207927934] [2022-12-14 14:29:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:30,749 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 14:29:30,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:30,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:30,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:30,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:29:31,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:31,010 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 14:29:31,016 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 14:29:31,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:31,345 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 14:29:31,357 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 14:29:31,357 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 14:29:31,374 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 14:29:31,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:31,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207927934] [2022-12-14 14:29:31,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207927934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:31,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:31,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:29:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424998691] [2022-12-14 14:29:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:31,377 INFO L87 Difference]: Start difference. First operand 2880 states and 5011 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 14:29:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:34,963 INFO L93 Difference]: Finished difference Result 5141 states and 9357 transitions. [2022-12-14 14:29:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:34,963 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 14:29:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:34,972 INFO L225 Difference]: With dead ends: 5141 [2022-12-14 14:29:34,972 INFO L226 Difference]: Without dead ends: 5141 [2022-12-14 14:29:34,972 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 14:29:34,973 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 2859 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:34,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3862 Valid, 3868 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 14:29:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2022-12-14 14:29:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 2810. [2022-12-14 14:29:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 1544 states have (on average 1.8788860103626943) internal successors, (2901), 2804 states have internal predecessors, (2901), 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 14:29:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4907 transitions. [2022-12-14 14:29:35,320 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4907 transitions. Word has length 60 [2022-12-14 14:29:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:35,321 INFO L495 AbstractCegarLoop]: Abstraction has 2810 states and 4907 transitions. [2022-12-14 14:29:35,321 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 14:29:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4907 transitions. [2022-12-14 14:29:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:29:35,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:35,321 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 14:29:35,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:35,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 14:29:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:35,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057949838] [2022-12-14 14:29:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:35,529 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 14:29:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:35,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:35,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:35,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:29:35,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:35,762 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 14:29:35,771 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 14:29:35,790 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 14:29:35,796 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 14:29:35,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:35,797 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057949838] [2022-12-14 14:29:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057949838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:35,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:35,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129455670] [2022-12-14 14:29:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:35,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:29:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:29:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:29:35,798 INFO L87 Difference]: Start difference. First operand 2810 states and 4907 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 14:29:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:37,502 INFO L93 Difference]: Finished difference Result 2809 states and 4906 transitions. [2022-12-14 14:29:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:29:37,503 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 14:29:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:37,510 INFO L225 Difference]: With dead ends: 2809 [2022-12-14 14:29:37,511 INFO L226 Difference]: Without dead ends: 2809 [2022-12-14 14:29:37,511 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 14:29:37,511 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 4 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9781 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:37,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9781 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 14:29:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2022-12-14 14:29:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2809. [2022-12-14 14:29:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1544 states have (on average 1.878238341968912) internal successors, (2900), 2803 states have internal predecessors, (2900), 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 14:29:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4906 transitions. [2022-12-14 14:29:37,783 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4906 transitions. Word has length 65 [2022-12-14 14:29:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:37,783 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 4906 transitions. [2022-12-14 14:29:37,783 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 14:29:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4906 transitions. [2022-12-14 14:29:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:29:37,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:37,784 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 14:29:37,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:37,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:37,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 14:29:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:37,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120615877] [2022-12-14 14:29:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:37,986 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 14:29:37,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:37,987 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:37,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 14:29:38,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:38,197 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 14:29:38,209 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 14:29:38,216 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 14:29:38,254 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 14:29:38,259 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 14:29:38,270 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 14:29:38,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:38,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:38,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120615877] [2022-12-14 14:29:38,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120615877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:38,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:38,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075463960] [2022-12-14 14:29:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:29:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:29:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:29:38,272 INFO L87 Difference]: Start difference. First operand 2809 states and 4906 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 14:29:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:40,496 INFO L93 Difference]: Finished difference Result 2808 states and 4905 transitions. [2022-12-14 14:29:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:29:40,497 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 14:29:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:40,503 INFO L225 Difference]: With dead ends: 2808 [2022-12-14 14:29:40,503 INFO L226 Difference]: Without dead ends: 2808 [2022-12-14 14:29:40,503 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 14:29:40,503 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 2 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9801 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:40,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9801 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 14:29:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2022-12-14 14:29:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2022-12-14 14:29:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1543 states have (on average 1.878807517822424) internal successors, (2899), 2802 states have internal predecessors, (2899), 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 14:29:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4905 transitions. [2022-12-14 14:29:40,676 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4905 transitions. Word has length 65 [2022-12-14 14:29:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:40,677 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 4905 transitions. [2022-12-14 14:29:40,677 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 14:29:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4905 transitions. [2022-12-14 14:29:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:29:40,677 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:40,677 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 14:29:40,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:40,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:40,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash 96402255, now seen corresponding path program 1 times [2022-12-14 14:29:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:40,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415358851] [2022-12-14 14:29:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:40,879 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 14:29:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:40,880 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:40,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:41,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:41,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:41,112 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 14:29:41,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:29:41,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:41,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415358851] [2022-12-14 14:29:41,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415358851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:41,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:29:41,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:29:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351870961] [2022-12-14 14:29:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:29:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:29:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:29:41,114 INFO L87 Difference]: Start difference. First operand 2808 states and 4905 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 14:29:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:41,185 INFO L93 Difference]: Finished difference Result 2811 states and 4909 transitions. [2022-12-14 14:29:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:29:41,186 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 14:29:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:41,200 INFO L225 Difference]: With dead ends: 2811 [2022-12-14 14:29:41,200 INFO L226 Difference]: Without dead ends: 2811 [2022-12-14 14:29:41,201 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 14:29:41,201 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 2 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8077 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 14:29:41,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8077 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:29:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-12-14 14:29:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2811. [2022-12-14 14:29:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 1545 states have (on average 1.8783171521035598) internal successors, (2902), 2805 states have internal predecessors, (2902), 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 14:29:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4909 transitions. [2022-12-14 14:29:41,420 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4909 transitions. Word has length 73 [2022-12-14 14:29:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:41,420 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4909 transitions. [2022-12-14 14:29:41,420 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 14:29:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4909 transitions. [2022-12-14 14:29:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 14:29:41,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:41,421 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 14:29:41,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:41,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:41,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:41,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1565083746, now seen corresponding path program 1 times [2022-12-14 14:29:41,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:41,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521039681] [2022-12-14 14:29:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:41,622 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 14:29:41,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:41,623 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:41,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:41,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:41,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:41,868 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 14:29:41,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:41,929 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 14:29:41,929 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:41,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521039681] [2022-12-14 14:29:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521039681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:41,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000652518] [2022-12-14 14:29:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:41,930 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:29:41,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:29:41,931 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:29:41,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 14:29:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:42,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:42,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:42,333 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 14:29:42,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:42,361 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 14:29:42,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000652518] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:42,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444033043] [2022-12-14 14:29:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:42,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:42,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:42,363 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:42,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 14:29:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:42,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:29:42,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:42,567 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 14:29:42,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:42,591 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 14:29:42,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444033043] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:42,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:29:42,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 14:29:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055127851] [2022-12-14 14:29:42,591 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:29:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:29:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:29:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:29:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:29:42,592 INFO L87 Difference]: Start difference. First operand 2811 states and 4909 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 14:29:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:42,781 INFO L93 Difference]: Finished difference Result 2823 states and 4926 transitions. [2022-12-14 14:29:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 14:29:42,781 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 14:29:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:42,788 INFO L225 Difference]: With dead ends: 2823 [2022-12-14 14:29:42,788 INFO L226 Difference]: Without dead ends: 2823 [2022-12-14 14:29:42,788 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 14:29:42,788 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 11 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10769 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:42,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10769 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:29:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-12-14 14:29:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2821. [2022-12-14 14:29:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 1554 states have (on average 1.877091377091377) internal successors, (2917), 2814 states have internal predecessors, (2917), 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 14:29:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4924 transitions. [2022-12-14 14:29:43,032 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4924 transitions. Word has length 74 [2022-12-14 14:29:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:43,032 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 4924 transitions. [2022-12-14 14:29:43,032 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 14:29:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4924 transitions. [2022-12-14 14:29:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 14:29:43,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:43,033 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 14:29:43,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 14:29:43,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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)] Ended with exit code 0 [2022-12-14 14:29:43,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 14:29:43,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:29:43,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:29:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1133303793, now seen corresponding path program 2 times [2022-12-14 14:29:43,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:29:43,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519467888] [2022-12-14 14:29:43,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:29:43,638 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 14:29:43,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:29:43,639 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:29:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 (21)] Waiting until timeout for monitored process [2022-12-14 14:29:43,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:29:43,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:29:44,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:29:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:44,038 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 14:29:44,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:44,166 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 14:29:44,166 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:29:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519467888] [2022-12-14 14:29:44,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519467888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:44,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625772542] [2022-12-14 14:29:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:29:44,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:29:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:29:44,167 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:29:44,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 14:29:45,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:29:45,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:29:45,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 14:29:45,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:45,411 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 14:29:45,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:45,470 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 14:29:45,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [625772542] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:45,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973634228] [2022-12-14 14:29:45,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:29:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:45,471 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:45,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 14:30:02,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:30:02,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:30:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 14:30:02,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:02,190 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 14:30:02,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:30:02,386 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 14:30:02,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973634228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:30:02,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:30:02,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-12-14 14:30:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963373285] [2022-12-14 14:30:02,387 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:30:02,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 14:30:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:30:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 14:30:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-12-14 14:30:02,388 INFO L87 Difference]: Start difference. First operand 2821 states and 4924 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 14:30:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:30:03,093 INFO L93 Difference]: Finished difference Result 2842 states and 4951 transitions. [2022-12-14 14:30:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 14:30:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2022-12-14 14:30:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:30:03,100 INFO L225 Difference]: With dead ends: 2842 [2022-12-14 14:30:03,100 INFO L226 Difference]: Without dead ends: 2836 [2022-12-14 14:30:03,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 14:30:03,101 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 29 mSDsluCounter, 16159 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18856 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:30:03,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18856 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:30:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2022-12-14 14:30:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2830. [2022-12-14 14:30:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 1563 states have (on average 1.873320537428023) internal successors, (2928), 2823 states have internal predecessors, (2928), 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 14:30:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4935 transitions. [2022-12-14 14:30:03,301 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4935 transitions. Word has length 77 [2022-12-14 14:30:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:30:03,301 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 4935 transitions. [2022-12-14 14:30:03,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 14:30:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4935 transitions. [2022-12-14 14:30:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 14:30:03,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:30:03,302 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 14:30:03,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 (21)] Ended with exit code 0 [2022-12-14 14:30:03,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 14:30:03,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 14:30:03,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:30:03,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 14:30:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:30:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash -269207761, now seen corresponding path program 3 times [2022-12-14 14:30:03,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:30:03,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659357756] [2022-12-14 14:30:03,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:30:03,907 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 14:30:03,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:30:03,908 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 14:30:03,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/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 (24)] Waiting until timeout for monitored process [2022-12-14 14:30:04,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 14:30:04,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:30:04,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 14:30:04,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:04,712 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 14:30:04,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:30:05,474 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 14:30:05,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:30:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659357756] [2022-12-14 14:30:05,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659357756] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:30:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [679979883] [2022-12-14 14:30:05,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:30:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:30:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:30:05,475 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:30:05,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 14:30:09,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 14:30:09,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:30:09,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 14:30:09,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:09,796 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 14:30:09,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:30:10,002 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 14:30:10,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [679979883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:30:10,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659720953] [2022-12-14 14:30:10,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:30:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:30:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:30:10,004 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:30:10,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2ecf81e-8231-4472-bb22-80c7e0f3e033/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process