./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:47:33,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:47:33,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 15:47:33,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:47:33,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:47:33,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:47:33,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:47:33,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:47:33,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:47:33,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:47:33,320 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:47:33,321 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:47:33,321 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:47:33,322 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:47:33,322 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:47:33,323 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:47:33,323 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:47:33,324 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:47:33,324 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:47:33,325 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:47:33,325 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:47:33,326 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:47:33,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:47:33,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:47:33,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:47:33,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:47:33,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:47:33,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:47:33,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:47:33,330 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:47:33,330 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:47:33,331 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:47:33,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:47:33,331 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:47:33,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:47:33,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:47:33,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:47:33,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:47:33,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:47:33,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:47:33,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:33,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:47:33,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:47:33,334 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2023-12-02 15:47:33,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:47:33,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:47:33,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:47:33,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:47:33,550 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:47:33,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2023-12-02 15:47:36,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:47:36,572 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:47:36,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2023-12-02 15:47:36,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/24a1829b4/3aa220f32bcc48169b8f74006ec080d9/FLAGe150a3f0e [2023-12-02 15:47:36,602 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/24a1829b4/3aa220f32bcc48169b8f74006ec080d9 [2023-12-02 15:47:36,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:47:36,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:47:36,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:36,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:47:36,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:47:36,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:36" (1/1) ... [2023-12-02 15:47:36,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccd805d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:36, skipping insertion in model container [2023-12-02 15:47:36,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:36" (1/1) ... [2023-12-02 15:47:36,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:37,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:37,157 ERROR L324 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) [2023-12-02 15:47:37,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78a08bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:37, skipping insertion in model container [2023-12-02 15:47:37,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:37,159 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:47:37,161 INFO L158 Benchmark]: Toolchain (without parser) took 554.93ms. Allocated memory is still 146.8MB. Free memory was 115.7MB in the beginning and 95.2MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:47:37,162 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:47:37,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.06ms. Allocated memory is still 146.8MB. Free memory was 115.4MB in the beginning and 95.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 15:47:37,164 INFO L338 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 109.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.06ms. Allocated memory is still 146.8MB. Free memory was 115.4MB in the beginning and 95.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:47:38,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:47:39,010 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 15:47:39,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:47:39,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:47:39,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:47:39,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:47:39,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:47:39,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:47:39,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:47:39,050 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:47:39,050 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:47:39,051 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:47:39,051 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:47:39,052 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:47:39,052 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:47:39,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:47:39,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:47:39,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:47:39,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:47:39,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:47:39,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:47:39,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:47:39,057 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:47:39,057 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:47:39,058 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:47:39,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:47:39,059 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:47:39,059 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:47:39,060 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:47:39,060 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:47:39,060 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:47:39,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:47:39,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:47:39,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:47:39,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:47:39,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:47:39,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:39,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:47:39,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:47:39,063 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:47:39,063 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:47:39,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:47:39,063 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:47:39,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:47:39,064 INFO L153 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_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2023-12-02 15:47:39,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:47:39,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:47:39,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:47:39,387 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:47:39,387 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:47:39,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2023-12-02 15:47:42,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:47:42,567 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:47:42,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2023-12-02 15:47:42,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/f7ed39d63/d57faf364a9344b0858832e442c81a32/FLAGd9c789725 [2023-12-02 15:47:42,830 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/data/f7ed39d63/d57faf364a9344b0858832e442c81a32 [2023-12-02 15:47:42,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:47:42,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:47:42,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:42,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:47:42,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:47:42,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:42" (1/1) ... [2023-12-02 15:47:42,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b375af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:42, skipping insertion in model container [2023-12-02 15:47:42,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:42" (1/1) ... [2023-12-02 15:47:42,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:43,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:43,346 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:47:43,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:43,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:43,478 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:47:43,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:43,591 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:47:43,597 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:47:43,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43 WrapperNode [2023-12-02 15:47:43,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:43,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:43,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:47:43,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:47:43,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,702 INFO L138 Inliner]: procedures = 180, calls = 338, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1214 [2023-12-02 15:47:43,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:43,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:47:43,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:47:43,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:47:43,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:47:43,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:47:43,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:47:43,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:47:43,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (1/1) ... [2023-12-02 15:47:43,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:43,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:43,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:47:43,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:47:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 15:47:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 15:47:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:47:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:47:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:47:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:47:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:47:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:47:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:47:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:47:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:47:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:47:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:47:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:47:44,105 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:47:44,108 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:47:44,134 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 15:47:49,102 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:47:49,260 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:47:49,261 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-12-02 15:47:49,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:49 BoogieIcfgContainer [2023-12-02 15:47:49,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:47:49,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:47:49,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:47:49,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:47:49,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:47:42" (1/3) ... [2023-12-02 15:47:49,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671cc900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:49, skipping insertion in model container [2023-12-02 15:47:49,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:43" (2/3) ... [2023-12-02 15:47:49,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671cc900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:49, skipping insertion in model container [2023-12-02 15:47:49,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:49" (3/3) ... [2023-12-02 15:47:49,269 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2023-12-02 15:47:49,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:47:49,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 638 error locations. [2023-12-02 15:47:49,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:47:49,344 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;@14a69208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:47:49,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 638 error locations. [2023-12-02 15:47:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 1160 states, 511 states have (on average 2.5342465753424657) internal successors, (1295), 1153 states have internal predecessors, (1295), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 15:47:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 15:47:49,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:49,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 15:47:49,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:47:49,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash 63851, now seen corresponding path program 1 times [2023-12-02 15:47:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762573253] [2023-12-02 15:47:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:49,371 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 [2023-12-02 15:47:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:49,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:47:49,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:47:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:49,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:49,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:49,617 INFO L378 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 [2023-12-02 15:47:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:49,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:49,629 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:47:49,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762573253] [2023-12-02 15:47:49,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762573253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:47:49,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262268107] [2023-12-02 15:47:49,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:49,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:49,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:47:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:49,688 INFO L87 Difference]: Start difference. First operand has 1160 states, 511 states have (on average 2.5342465753424657) internal successors, (1295), 1153 states have internal predecessors, (1295), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-12-02 15:47:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:51,952 INFO L93 Difference]: Finished difference Result 1321 states and 1406 transitions. [2023-12-02 15:47:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:51,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 15:47:51,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:51,976 INFO L225 Difference]: With dead ends: 1321 [2023-12-02 15:47:51,976 INFO L226 Difference]: Without dead ends: 1320 [2023-12-02 15:47:51,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:51,981 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1078 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:51,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 785 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 15:47:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-12-02 15:47:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1147. [2023-12-02 15:47:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 514 states have (on average 2.3463035019455254) internal successors, (1206), 1140 states have internal predecessors, (1206), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:47:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1224 transitions. [2023-12-02 15:47:52,071 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1224 transitions. Word has length 2 [2023-12-02 15:47:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:52,072 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1224 transitions. [2023-12-02 15:47:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-12-02 15:47:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1224 transitions. [2023-12-02 15:47:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 15:47:52,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:52,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 15:47:52,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:47:52,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:47:52,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:47:52,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash 63852, now seen corresponding path program 1 times [2023-12-02 15:47:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:52,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673175622] [2023-12-02 15:47:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:52,277 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 [2023-12-02 15:47:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:52,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:47:52,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:47:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:52,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:52,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:52,412 INFO L378 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 [2023-12-02 15:47:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:52,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:52,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:47:52,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673175622] [2023-12-02 15:47:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673175622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:52,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:52,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:47:52,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096710720] [2023-12-02 15:47:52,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:52,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:47:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:52,430 INFO L87 Difference]: Start difference. First operand 1147 states and 1224 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-12-02 15:47:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:56,177 INFO L93 Difference]: Finished difference Result 1705 states and 1834 transitions. [2023-12-02 15:47:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:56,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 15:47:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:56,185 INFO L225 Difference]: With dead ends: 1705 [2023-12-02 15:47:56,185 INFO L226 Difference]: Without dead ends: 1705 [2023-12-02 15:47:56,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:56,187 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 599 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1454 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 15:47:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-02 15:47:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1316. [2023-12-02 15:47:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 684 states have (on average 2.3201754385964914) internal successors, (1587), 1309 states have internal predecessors, (1587), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:47:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1605 transitions. [2023-12-02 15:47:56,218 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1605 transitions. Word has length 2 [2023-12-02 15:47:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:56,219 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1605 transitions. [2023-12-02 15:47:56,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-12-02 15:47:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1605 transitions. [2023-12-02 15:47:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:47:56,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:56,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:47:56,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:47:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:47:56,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:47:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1161888011, now seen corresponding path program 1 times [2023-12-02 15:47:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:47:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745818730] [2023-12-02 15:47:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:56,423 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 [2023-12-02 15:47:56,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:47:56,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:47:56,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:47:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:56,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:47:56,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:56,568 INFO L378 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 [2023-12-02 15:47:56,577 INFO L378 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 [2023-12-02 15:47:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:47:56,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:47:56,661 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:47:56,661 INFO L378 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 [2023-12-02 15:47:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:56,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:56,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:47:56,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745818730] [2023-12-02 15:47:56,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745818730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:56,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:56,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715169733] [2023-12-02 15:47:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:56,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:47:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:56,684 INFO L87 Difference]: Start difference. First operand 1316 states and 1605 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 15:48:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:00,101 INFO L93 Difference]: Finished difference Result 1483 states and 1783 transitions. [2023-12-02 15:48:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:00,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:48:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:00,107 INFO L225 Difference]: With dead ends: 1483 [2023-12-02 15:48:00,108 INFO L226 Difference]: Without dead ends: 1483 [2023-12-02 15:48:00,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:00,109 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2404 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:00,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 403 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 15:48:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-12-02 15:48:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1136. [2023-12-02 15:48:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 514 states have (on average 2.32295719844358) internal successors, (1194), 1129 states have internal predecessors, (1194), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1212 transitions. [2023-12-02 15:48:00,132 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1212 transitions. Word has length 6 [2023-12-02 15:48:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:00,133 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1212 transitions. [2023-12-02 15:48:00,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 15:48:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1212 transitions. [2023-12-02 15:48:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:48:00,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:00,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:00,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:00,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1658789990, now seen corresponding path program 1 times [2023-12-02 15:48:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822550910] [2023-12-02 15:48:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:00,338 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 [2023-12-02 15:48:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:00,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:00,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:00,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:48:00,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:00,475 INFO L378 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 [2023-12-02 15:48:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:00,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:00,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822550910] [2023-12-02 15:48:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822550910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:48:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32961432] [2023-12-02 15:48:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:48:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:48:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:00,490 INFO L87 Difference]: Start difference. First operand 1136 states and 1212 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:48:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:02,967 INFO L93 Difference]: Finished difference Result 1430 states and 1536 transitions. [2023-12-02 15:48:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:48:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 15:48:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:02,975 INFO L225 Difference]: With dead ends: 1430 [2023-12-02 15:48:02,975 INFO L226 Difference]: Without dead ends: 1430 [2023-12-02 15:48:02,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:02,976 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 895 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:02,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1265 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 15:48:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-12-02 15:48:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1087. [2023-12-02 15:48:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 514 states have (on average 2.227626459143969) internal successors, (1145), 1080 states have internal predecessors, (1145), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1163 transitions. [2023-12-02 15:48:02,996 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1163 transitions. Word has length 7 [2023-12-02 15:48:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:02,996 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1163 transitions. [2023-12-02 15:48:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:48:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1163 transitions. [2023-12-02 15:48:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:48:02,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:02,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:02,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:48:03,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:03,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1658789989, now seen corresponding path program 1 times [2023-12-02 15:48:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:03,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278649826] [2023-12-02 15:48:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:03,199 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 [2023-12-02 15:48:03,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:03,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:03,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:03,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:03,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:03,341 INFO L378 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 [2023-12-02 15:48:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:03,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:03,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:03,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278649826] [2023-12-02 15:48:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278649826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:03,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:03,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:48:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713288838] [2023-12-02 15:48:03,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:03,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:48:03,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:48:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:03,367 INFO L87 Difference]: Start difference. First operand 1087 states and 1163 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:48:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:06,686 INFO L93 Difference]: Finished difference Result 1500 states and 1609 transitions. [2023-12-02 15:48:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:48:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 15:48:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:06,693 INFO L225 Difference]: With dead ends: 1500 [2023-12-02 15:48:06,693 INFO L226 Difference]: Without dead ends: 1500 [2023-12-02 15:48:06,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:06,693 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 613 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:06,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1590 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 15:48:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-12-02 15:48:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1100. [2023-12-02 15:48:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 537 states have (on average 2.2197392923649906) internal successors, (1192), 1093 states have internal predecessors, (1192), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1210 transitions. [2023-12-02 15:48:06,720 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1210 transitions. Word has length 7 [2023-12-02 15:48:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1210 transitions. [2023-12-02 15:48:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:48:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1210 transitions. [2023-12-02 15:48:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:48:06,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:06,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:06,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:06,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:06,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 143482878, now seen corresponding path program 1 times [2023-12-02 15:48:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:06,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538813541] [2023-12-02 15:48:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:06,925 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 [2023-12-02 15:48:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:06,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:06,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:07,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:48:07,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:07,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:07,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538813541] [2023-12-02 15:48:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538813541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335259385] [2023-12-02 15:48:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:07,105 INFO L87 Difference]: Start difference. First operand 1100 states and 1210 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-12-02 15:48:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:09,317 INFO L93 Difference]: Finished difference Result 1689 states and 1843 transitions. [2023-12-02 15:48:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:48:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2023-12-02 15:48:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:09,327 INFO L225 Difference]: With dead ends: 1689 [2023-12-02 15:48:09,327 INFO L226 Difference]: Without dead ends: 1689 [2023-12-02 15:48:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:09,328 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 689 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:09,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 2996 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 15:48:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-02 15:48:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1304. [2023-12-02 15:48:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 741 states have (on average 2.174089068825911) internal successors, (1611), 1297 states have internal predecessors, (1611), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1629 transitions. [2023-12-02 15:48:09,354 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1629 transitions. Word has length 10 [2023-12-02 15:48:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:09,354 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1629 transitions. [2023-12-02 15:48:09,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-12-02 15:48:09,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1629 transitions. [2023-12-02 15:48:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 15:48:09,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:09,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:09,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 15:48:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:09,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:09,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -136965890, now seen corresponding path program 1 times [2023-12-02 15:48:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074119063] [2023-12-02 15:48:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:09,557 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 [2023-12-02 15:48:09,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:09,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:09,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:48:09,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:09,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:09,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:09,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074119063] [2023-12-02 15:48:09,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074119063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:09,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:09,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105901021] [2023-12-02 15:48:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:48:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:48:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:09,694 INFO L87 Difference]: Start difference. First operand 1304 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-02 15:48:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:10,659 INFO L93 Difference]: Finished difference Result 1250 states and 1549 transitions. [2023-12-02 15:48:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:48:10,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-12-02 15:48:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:10,666 INFO L225 Difference]: With dead ends: 1250 [2023-12-02 15:48:10,666 INFO L226 Difference]: Without dead ends: 1250 [2023-12-02 15:48:10,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:10,667 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 70 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1897 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:48:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-02 15:48:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2023-12-02 15:48:10,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 711 states have (on average 2.1533052039381153) internal successors, (1531), 1243 states have internal predecessors, (1531), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1549 transitions. [2023-12-02 15:48:10,689 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1549 transitions. Word has length 12 [2023-12-02 15:48:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:10,690 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1549 transitions. [2023-12-02 15:48:10,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-12-02 15:48:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1549 transitions. [2023-12-02 15:48:10,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:48:10,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:10,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:10,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:10,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:10,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:10,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1519791385, now seen corresponding path program 1 times [2023-12-02 15:48:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376789436] [2023-12-02 15:48:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:10,896 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 [2023-12-02 15:48:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:10,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:10,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:11,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:48:11,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:11,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:11,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376789436] [2023-12-02 15:48:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376789436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:11,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533098661] [2023-12-02 15:48:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:11,028 INFO L87 Difference]: Start difference. First operand 1250 states and 1549 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:48:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:12,173 INFO L93 Difference]: Finished difference Result 1236 states and 1507 transitions. [2023-12-02 15:48:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 15:48:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:12,180 INFO L225 Difference]: With dead ends: 1236 [2023-12-02 15:48:12,180 INFO L226 Difference]: Without dead ends: 1236 [2023-12-02 15:48:12,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:12,180 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 58 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2802 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 15:48:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-12-02 15:48:12,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1234. [2023-12-02 15:48:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 709 states have (on average 2.0973201692524683) internal successors, (1487), 1227 states have internal predecessors, (1487), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1505 transitions. [2023-12-02 15:48:12,206 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1505 transitions. Word has length 14 [2023-12-02 15:48:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:12,207 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 1505 transitions. [2023-12-02 15:48:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:48:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1505 transitions. [2023-12-02 15:48:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:48:12,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:12,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:12,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:12,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr636ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:12,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1582431806, now seen corresponding path program 1 times [2023-12-02 15:48:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720748740] [2023-12-02 15:48:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:12,410 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 [2023-12-02 15:48:12,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:12,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:12,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:12,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:12,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:12,577 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:48:12,577 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:48:12,578 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:48:12,581 INFO L378 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 30 treesize of output 39 [2023-12-02 15:48:12,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:48:12,633 INFO L378 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 70 treesize of output 26 [2023-12-02 15:48:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:12,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:12,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720748740] [2023-12-02 15:48:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720748740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:12,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:12,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:12,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543188548] [2023-12-02 15:48:12,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:12,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:12,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:12,650 INFO L87 Difference]: Start difference. First operand 1234 states and 1505 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-02 15:48:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:14,559 INFO L93 Difference]: Finished difference Result 1663 states and 2005 transitions. [2023-12-02 15:48:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-02 15:48:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:14,566 INFO L225 Difference]: With dead ends: 1663 [2023-12-02 15:48:14,566 INFO L226 Difference]: Without dead ends: 1663 [2023-12-02 15:48:14,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:14,567 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 420 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:14,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2797 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 15:48:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-12-02 15:48:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1233. [2023-12-02 15:48:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 708 states have (on average 2.097457627118644) internal successors, (1485), 1226 states have internal predecessors, (1485), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1503 transitions. [2023-12-02 15:48:14,587 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1503 transitions. Word has length 15 [2023-12-02 15:48:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1503 transitions. [2023-12-02 15:48:14,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-12-02 15:48:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1503 transitions. [2023-12-02 15:48:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:48:14,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:14,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:14,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:14,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:14,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:14,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1155280690, now seen corresponding path program 1 times [2023-12-02 15:48:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30403723] [2023-12-02 15:48:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:14,790 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 [2023-12-02 15:48:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:14,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:14,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:14,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:48:14,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:14,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:14,952 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30403723] [2023-12-02 15:48:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30403723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62795982] [2023-12-02 15:48:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:48:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:48:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:14,953 INFO L87 Difference]: Start difference. First operand 1233 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 15:48:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:15,733 INFO L93 Difference]: Finished difference Result 1179 states and 1423 transitions. [2023-12-02 15:48:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:48:15,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-12-02 15:48:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:15,739 INFO L225 Difference]: With dead ends: 1179 [2023-12-02 15:48:15,739 INFO L226 Difference]: Without dead ends: 1179 [2023-12-02 15:48:15,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:48:15,739 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 70 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:15,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1781 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:48:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-12-02 15:48:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2023-12-02 15:48:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 678 states have (on average 2.0722713864306783) internal successors, (1405), 1172 states have internal predecessors, (1405), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1423 transitions. [2023-12-02 15:48:15,759 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1423 transitions. Word has length 15 [2023-12-02 15:48:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:15,760 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1423 transitions. [2023-12-02 15:48:15,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 15:48:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1423 transitions. [2023-12-02 15:48:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 15:48:15,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:15,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:15,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:15,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:15,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:15,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2123176427, now seen corresponding path program 1 times [2023-12-02 15:48:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:15,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059854429] [2023-12-02 15:48:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:15,966 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 [2023-12-02 15:48:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:15,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:15,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:16,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:48:16,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:16,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:16,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059854429] [2023-12-02 15:48:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059854429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421165576] [2023-12-02 15:48:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:16,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:16,124 INFO L87 Difference]: Start difference. First operand 1179 states and 1423 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 15:48:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:17,118 INFO L93 Difference]: Finished difference Result 1165 states and 1381 transitions. [2023-12-02 15:48:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-12-02 15:48:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:17,125 INFO L225 Difference]: With dead ends: 1165 [2023-12-02 15:48:17,125 INFO L226 Difference]: Without dead ends: 1165 [2023-12-02 15:48:17,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:17,125 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 58 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:17,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2628 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:48:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2023-12-02 15:48:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1163. [2023-12-02 15:48:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 676 states have (on average 2.0133136094674557) internal successors, (1361), 1156 states have internal predecessors, (1361), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1379 transitions. [2023-12-02 15:48:17,140 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1379 transitions. Word has length 17 [2023-12-02 15:48:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:17,141 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1379 transitions. [2023-12-02 15:48:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 15:48:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1379 transitions. [2023-12-02 15:48:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 15:48:17,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:17,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:17,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-02 15:48:17,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:17,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:17,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash -489176327, now seen corresponding path program 1 times [2023-12-02 15:48:17,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:17,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542121675] [2023-12-02 15:48:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:17,343 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 [2023-12-02 15:48:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:17,344 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:17,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:17,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:17,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:17,509 INFO L378 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 [2023-12-02 15:48:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:17,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:17,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542121675] [2023-12-02 15:48:17,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542121675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:17,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:17,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:17,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480038051] [2023-12-02 15:48:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:17,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:17,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:17,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:17,576 INFO L87 Difference]: Start difference. First operand 1163 states and 1379 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 15:48:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:20,049 INFO L93 Difference]: Finished difference Result 1511 states and 1841 transitions. [2023-12-02 15:48:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 15:48:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:20,055 INFO L225 Difference]: With dead ends: 1511 [2023-12-02 15:48:20,055 INFO L226 Difference]: Without dead ends: 1511 [2023-12-02 15:48:20,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:20,056 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 760 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:20,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1267 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 15:48:20,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2023-12-02 15:48:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1159. [2023-12-02 15:48:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 676 states have (on average 2.0014792899408285) internal successors, (1353), 1152 states have internal predecessors, (1353), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1371 transitions. [2023-12-02 15:48:20,073 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1371 transitions. Word has length 31 [2023-12-02 15:48:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:20,074 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1371 transitions. [2023-12-02 15:48:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 15:48:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1371 transitions. [2023-12-02 15:48:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 15:48:20,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:20,075 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] [2023-12-02 15:48:20,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:20,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:20,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -489176326, now seen corresponding path program 1 times [2023-12-02 15:48:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142241948] [2023-12-02 15:48:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:20,277 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 [2023-12-02 15:48:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:20,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:20,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:20,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:48:20,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:20,430 INFO L378 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 [2023-12-02 15:48:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:20,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:20,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142241948] [2023-12-02 15:48:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142241948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292358887] [2023-12-02 15:48:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:20,608 INFO L87 Difference]: Start difference. First operand 1159 states and 1371 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 15:48:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:24,385 INFO L93 Difference]: Finished difference Result 1613 states and 1922 transitions. [2023-12-02 15:48:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 15:48:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:24,394 INFO L225 Difference]: With dead ends: 1613 [2023-12-02 15:48:24,394 INFO L226 Difference]: Without dead ends: 1613 [2023-12-02 15:48:24,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:24,395 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 480 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:24,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2159 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 15:48:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2023-12-02 15:48:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1155. [2023-12-02 15:48:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 676 states have (on average 1.9896449704142012) internal successors, (1345), 1148 states have internal predecessors, (1345), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1363 transitions. [2023-12-02 15:48:24,416 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1363 transitions. Word has length 31 [2023-12-02 15:48:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:24,416 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1363 transitions. [2023-12-02 15:48:24,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 15:48:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1363 transitions. [2023-12-02 15:48:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 15:48:24,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:24,418 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] [2023-12-02 15:48:24,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:24,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:24,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1766220253, now seen corresponding path program 1 times [2023-12-02 15:48:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38270293] [2023-12-02 15:48:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:24,619 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 [2023-12-02 15:48:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:24,620 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:24,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:24,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:48:24,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:24,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:24,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38270293] [2023-12-02 15:48:24,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38270293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:24,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:24,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770910070] [2023-12-02 15:48:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:24,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:24,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:24,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:24,868 INFO L87 Difference]: Start difference. First operand 1155 states and 1363 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-02 15:48:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:25,808 INFO L93 Difference]: Finished difference Result 1143 states and 1343 transitions. [2023-12-02 15:48:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:25,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2023-12-02 15:48:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:25,814 INFO L225 Difference]: With dead ends: 1143 [2023-12-02 15:48:25,814 INFO L226 Difference]: Without dead ends: 1143 [2023-12-02 15:48:25,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:25,815 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 23 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:25,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2614 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:48:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2023-12-02 15:48:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1143. [2023-12-02 15:48:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 664 states have (on average 1.9954819277108433) internal successors, (1325), 1136 states have internal predecessors, (1325), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1343 transitions. [2023-12-02 15:48:25,828 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1343 transitions. Word has length 50 [2023-12-02 15:48:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:25,829 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1343 transitions. [2023-12-02 15:48:25,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-02 15:48:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1343 transitions. [2023-12-02 15:48:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 15:48:25,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:25,830 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] [2023-12-02 15:48:25,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:26,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:26,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:26,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1332769436, now seen corresponding path program 1 times [2023-12-02 15:48:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:26,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289240939] [2023-12-02 15:48:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:26,032 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 [2023-12-02 15:48:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:26,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:26,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:26,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:48:26,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:26,325 INFO L378 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 [2023-12-02 15:48:26,331 INFO L378 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 [2023-12-02 15:48:26,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:48:26,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 15:48:26,803 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:48:26,804 INFO L378 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 [2023-12-02 15:48:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:26,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:26,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289240939] [2023-12-02 15:48:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289240939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:26,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:48:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966869966] [2023-12-02 15:48:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:26,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:26,819 INFO L87 Difference]: Start difference. First operand 1143 states and 1343 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-02 15:48:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:29,748 INFO L93 Difference]: Finished difference Result 1457 states and 1775 transitions. [2023-12-02 15:48:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-12-02 15:48:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:29,755 INFO L225 Difference]: With dead ends: 1457 [2023-12-02 15:48:29,755 INFO L226 Difference]: Without dead ends: 1457 [2023-12-02 15:48:29,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:29,756 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 968 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:29,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 704 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 15:48:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2023-12-02 15:48:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1082. [2023-12-02 15:48:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 641 states have (on average 1.9188767550702028) internal successors, (1230), 1075 states have internal predecessors, (1230), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1248 transitions. [2023-12-02 15:48:29,773 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1248 transitions. Word has length 54 [2023-12-02 15:48:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:29,773 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1248 transitions. [2023-12-02 15:48:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-02 15:48:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1248 transitions. [2023-12-02 15:48:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 15:48:29,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:29,774 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] [2023-12-02 15:48:29,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:29,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:29,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -958018060, now seen corresponding path program 1 times [2023-12-02 15:48:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251490562] [2023-12-02 15:48:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:29,976 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 [2023-12-02 15:48:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:29,977 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:29,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:30,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:48:30,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:30,209 INFO L378 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 [2023-12-02 15:48:30,224 INFO L378 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 19 treesize of output 1 [2023-12-02 15:48:30,243 INFO L378 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 [2023-12-02 15:48:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:30,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:30,253 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251490562] [2023-12-02 15:48:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251490562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:30,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293724448] [2023-12-02 15:48:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:48:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:48:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:30,254 INFO L87 Difference]: Start difference. First operand 1082 states and 1248 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 15:48:33,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:33,072 INFO L93 Difference]: Finished difference Result 1081 states and 1247 transitions. [2023-12-02 15:48:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:48:33,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 15:48:33,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:33,078 INFO L225 Difference]: With dead ends: 1081 [2023-12-02 15:48:33,078 INFO L226 Difference]: Without dead ends: 1081 [2023-12-02 15:48:33,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:48:33,079 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 3 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:33,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2221 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 15:48:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2023-12-02 15:48:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1081. [2023-12-02 15:48:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 641 states have (on average 1.9173166926677068) internal successors, (1229), 1074 states have internal predecessors, (1229), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1247 transitions. [2023-12-02 15:48:33,091 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1247 transitions. Word has length 58 [2023-12-02 15:48:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:33,092 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1247 transitions. [2023-12-02 15:48:33,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 15:48:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1247 transitions. [2023-12-02 15:48:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 15:48:33,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:33,093 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] [2023-12-02 15:48:33,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:33,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:33,293 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:33,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -958018059, now seen corresponding path program 1 times [2023-12-02 15:48:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437014850] [2023-12-02 15:48:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:33,294 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 [2023-12-02 15:48:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:33,295 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:48:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:33,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:48:33,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:33,554 INFO L378 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 [2023-12-02 15:48:33,572 INFO L378 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 [2023-12-02 15:48:33,578 INFO L378 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 19 treesize of output 1 [2023-12-02 15:48:33,615 INFO L378 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 [2023-12-02 15:48:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:33,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:33,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437014850] [2023-12-02 15:48:33,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437014850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:33,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:33,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834923388] [2023-12-02 15:48:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:33,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:48:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:48:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:33,636 INFO L87 Difference]: Start difference. First operand 1081 states and 1247 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 15:48:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:37,316 INFO L93 Difference]: Finished difference Result 1080 states and 1246 transitions. [2023-12-02 15:48:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:48:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 15:48:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:37,320 INFO L225 Difference]: With dead ends: 1080 [2023-12-02 15:48:37,321 INFO L226 Difference]: Without dead ends: 1080 [2023-12-02 15:48:37,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:48:37,321 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:37,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2272 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 15:48:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-02 15:48:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1080. [2023-12-02 15:48:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 640 states have (on average 1.91875) internal successors, (1228), 1073 states have internal predecessors, (1228), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:48:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1246 transitions. [2023-12-02 15:48:37,333 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1246 transitions. Word has length 58 [2023-12-02 15:48:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:37,333 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1246 transitions. [2023-12-02 15:48:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 15:48:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1246 transitions. [2023-12-02 15:48:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 15:48:37,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:37,334 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] [2023-12-02 15:48:37,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-02 15:48:37,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:37,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -905721446, now seen corresponding path program 1 times [2023-12-02 15:48:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:37,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130870014] [2023-12-02 15:48:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:37,536 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 [2023-12-02 15:48:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:37,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:37,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 15:48:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:37,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:48:37,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:37,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:48:37,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130870014] [2023-12-02 15:48:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130870014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:37,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:37,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:48:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143739866] [2023-12-02 15:48:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:48:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:48:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:48:37,805 INFO L87 Difference]: Start difference. First operand 1080 states and 1246 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-12-02 15:48:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:38,810 INFO L93 Difference]: Finished difference Result 1082 states and 1249 transitions. [2023-12-02 15:48:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:48:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2023-12-02 15:48:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:38,819 INFO L225 Difference]: With dead ends: 1082 [2023-12-02 15:48:38,819 INFO L226 Difference]: Without dead ends: 1082 [2023-12-02 15:48:38,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:38,820 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:38,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2553 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:48:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-12-02 15:48:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2023-12-02 15:48:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 641 states have (on average 1.9188767550702028) internal successors, (1230), 1075 states have internal predecessors, (1230), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:48:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1249 transitions. [2023-12-02 15:48:38,839 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1249 transitions. Word has length 64 [2023-12-02 15:48:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:38,840 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1249 transitions. [2023-12-02 15:48:38,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-12-02 15:48:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1249 transitions. [2023-12-02 15:48:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:48:38,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:38,840 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] [2023-12-02 15:48:38,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 15:48:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:48:39,041 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:39,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 260078258, now seen corresponding path program 1 times [2023-12-02 15:48:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788645329] [2023-12-02 15:48:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:39,042 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 [2023-12-02 15:48:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:39,043 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:39,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 15:48:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:39,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:39,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:39,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:39,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788645329] [2023-12-02 15:48:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788645329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:48:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166713973] [2023-12-02 15:48:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:48:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:48:39,415 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:48:39,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 15:48:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:39,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:39,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:39,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166713973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:48:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263339194] [2023-12-02 15:48:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:39,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:48:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:48:39,878 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:48:39,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:48:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:40,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:48:40,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:40,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263339194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:48:40,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:48:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 15:48:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772334407] [2023-12-02 15:48:40,203 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:48:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:48:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:48:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:48:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:48:40,204 INFO L87 Difference]: Start difference. First operand 1082 states and 1249 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 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) [2023-12-02 15:48:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:41,793 INFO L93 Difference]: Finished difference Result 1091 states and 1263 transitions. [2023-12-02 15:48:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:48:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 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 65 [2023-12-02 15:48:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:41,799 INFO L225 Difference]: With dead ends: 1091 [2023-12-02 15:48:41,799 INFO L226 Difference]: Without dead ends: 1091 [2023-12-02 15:48:41,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:48:41,800 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 6 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:41,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3400 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 15:48:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-12-02 15:48:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1090. [2023-12-02 15:48:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 648 states have (on average 1.9182098765432098) internal successors, (1243), 1082 states have internal predecessors, (1243), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:48:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1262 transitions. [2023-12-02 15:48:41,815 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1262 transitions. Word has length 65 [2023-12-02 15:48:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:41,815 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1262 transitions. [2023-12-02 15:48:41,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 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) [2023-12-02 15:48:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1262 transitions. [2023-12-02 15:48:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 15:48:41,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:41,816 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] [2023-12-02 15:48:41,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 15:48:42,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:48:42,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 15:48:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:48:42,417 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:48:42,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1674358886, now seen corresponding path program 2 times [2023-12-02 15:48:42,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:48:42,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409825697] [2023-12-02 15:48:42,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:48:42,418 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 [2023-12-02 15:48:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:48:42,419 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:48:42,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Waiting until timeout for monitored process [2023-12-02 15:48:42,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:48:42,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:48:42,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:48:42,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:42,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:43,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:48:43,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409825697] [2023-12-02 15:48:43,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409825697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:48:43,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [913943723] [2023-12-02 15:48:43,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:48:43,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:48:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:48:43,068 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:48:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 15:48:44,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:48:44,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:48:44,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:48:44,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:44,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:48:44,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [913943723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:48:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641309256] [2023-12-02 15:48:44,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:48:44,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:48:44,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:48:44,684 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:48:44,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:49:03,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:49:03,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:49:03,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:49:03,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:03,376 INFO L378 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 [2023-12-02 15:49:03,481 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:49:03,481 INFO L378 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 [2023-12-02 15:49:03,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:49:03,725 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:49:03,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 15:49:03,786 INFO L378 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 33 treesize of output 15 [2023-12-02 15:49:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:49:03,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:03,922 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 15:49:03,923 INFO L378 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 25 treesize of output 24 [2023-12-02 15:49:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641309256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:49:04,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 15:49:04,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2023-12-02 15:49:04,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385605884] [2023-12-02 15:49:04,024 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 15:49:04,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 15:49:04,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:49:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 15:49:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=501, Unknown=10, NotChecked=0, Total=600 [2023-12-02 15:49:04,026 INFO L87 Difference]: Start difference. First operand 1090 states and 1262 transitions. Second operand has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:49:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:49:13,558 INFO L93 Difference]: Finished difference Result 1456 states and 1753 transitions. [2023-12-02 15:49:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 15:49:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-12-02 15:49:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:49:13,564 INFO L225 Difference]: With dead ends: 1456 [2023-12-02 15:49:13,565 INFO L226 Difference]: Without dead ends: 1454 [2023-12-02 15:49:13,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=452, Invalid=2291, Unknown=13, NotChecked=0, Total=2756 [2023-12-02 15:49:13,567 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 677 mSDsluCounter, 5441 mSDsCounter, 0 mSdLazyCounter, 5421 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 5457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:49:13,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 5997 Invalid, 5457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5421 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 15:49:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-12-02 15:49:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1098. [2023-12-02 15:49:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 657 states have (on average 1.908675799086758) internal successors, (1254), 1090 states have internal predecessors, (1254), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:49:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1273 transitions. [2023-12-02 15:49:13,586 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1273 transitions. Word has length 68 [2023-12-02 15:49:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:13,587 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1273 transitions. [2023-12-02 15:49:13,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:49:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1273 transitions. [2023-12-02 15:49:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 15:49:13,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:13,587 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] [2023-12-02 15:49:13,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:49:13,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 15:49:13,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 15:49:14,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:49:14,188 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:49:14,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 871561371, now seen corresponding path program 1 times [2023-12-02 15:49:14,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:49:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763038440] [2023-12-02 15:49:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:14,190 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 [2023-12-02 15:49:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:49:14,191 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:49:14,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-02 15:49:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:14,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:49:14,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:14,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:15,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:49:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763038440] [2023-12-02 15:49:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763038440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [541651410] [2023-12-02 15:49:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:49:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:49:15,043 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:49:15,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-02 15:49:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:15,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:49:15,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:15,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [541651410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865668842] [2023-12-02 15:49:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:15,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:15,783 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:15,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 15:49:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:16,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:49:16,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:16,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865668842] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:16,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:49:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 15:49:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670710187] [2023-12-02 15:49:16,904 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:49:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 15:49:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:49:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 15:49:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:49:16,906 INFO L87 Difference]: Start difference. First operand 1098 states and 1273 transitions. Second operand has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 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) [2023-12-02 15:49:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:49:23,727 INFO L93 Difference]: Finished difference Result 1128 states and 1318 transitions. [2023-12-02 15:49:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 15:49:23,727 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 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 74 [2023-12-02 15:49:23,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:49:23,731 INFO L225 Difference]: With dead ends: 1128 [2023-12-02 15:49:23,732 INFO L226 Difference]: Without dead ends: 1125 [2023-12-02 15:49:23,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 15:49:23,734 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 25 mSDsluCounter, 11866 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12715 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:49:23,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12715 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-02 15:49:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-12-02 15:49:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1116. [2023-12-02 15:49:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 675 states have (on average 1.891851851851852) internal successors, (1277), 1108 states have internal predecessors, (1277), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:49:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1296 transitions. [2023-12-02 15:49:23,750 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1296 transitions. Word has length 74 [2023-12-02 15:49:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:23,751 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1296 transitions. [2023-12-02 15:49:23,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 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) [2023-12-02 15:49:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1296 transitions. [2023-12-02 15:49:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:49:23,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:23,751 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:49:23,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-12-02 15:49:23,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 15:49:24,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-02 15:49:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:49:24,352 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:49:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash 773458587, now seen corresponding path program 2 times [2023-12-02 15:49:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:49:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530939447] [2023-12-02 15:49:24,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:49:24,354 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 [2023-12-02 15:49:24,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:49:24,354 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:49:24,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-02 15:49:24,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:49:24,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:49:24,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 15:49:24,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:25,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:27,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:49:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530939447] [2023-12-02 15:49:27,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530939447] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [89466770] [2023-12-02 15:49:27,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:49:27,821 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:49:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:49:27,821 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:49:27,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-02 15:49:29,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:49:29,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:49:29,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 15:49:29,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:29,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:49:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [89466770] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571911604] [2023-12-02 15:49:30,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:49:30,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:30,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:30,063 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:30,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 15:50:15,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:50:15,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:50:15,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 15:50:15,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:50:15,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:50:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571911604] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:50:16,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:50:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 66 [2023-12-02 15:50:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935378884] [2023-12-02 15:50:16,295 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:50:16,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-02 15:50:16,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:50:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-02 15:50:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3202, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 15:50:16,299 INFO L87 Difference]: Start difference. First operand 1116 states and 1296 transitions. Second operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 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) [2023-12-02 15:50:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:34,360 INFO L93 Difference]: Finished difference Result 1175 states and 1399 transitions. [2023-12-02 15:50:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 15:50:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 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 86 [2023-12-02 15:50:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:34,365 INFO L225 Difference]: With dead ends: 1175 [2023-12-02 15:50:34,365 INFO L226 Difference]: Without dead ends: 1172 [2023-12-02 15:50:34,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=3690, Invalid=8742, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 15:50:34,370 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 57 mSDsluCounter, 20349 mSDsCounter, 0 mSdLazyCounter, 5711 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 21198 SdHoareTripleChecker+Invalid, 5781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:34,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 21198 Invalid, 5781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 5711 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-02 15:50:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-12-02 15:50:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1152. [2023-12-02 15:50:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 711 states have (on average 1.8635724331926864) internal successors, (1325), 1144 states have internal predecessors, (1325), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:50:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1344 transitions. [2023-12-02 15:50:34,390 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1344 transitions. Word has length 86 [2023-12-02 15:50:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:34,390 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1344 transitions. [2023-12-02 15:50:34,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 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) [2023-12-02 15:50:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1344 transitions. [2023-12-02 15:50:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 15:50:34,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:34,392 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:34,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-02 15:50:34,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-12-02 15:50:34,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 15:50:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:34,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-12-02 15:50:34,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1436126107, now seen corresponding path program 3 times [2023-12-02 15:50:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:50:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707142549] [2023-12-02 15:50:34,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:50:34,994 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 [2023-12-02 15:50:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:50:34,994 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:50:34,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-02 15:50:37,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 15:50:37,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:50:37,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-02 15:50:37,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:37,631 INFO L378 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 [2023-12-02 15:50:37,839 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:50:37,839 INFO L378 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 [2023-12-02 15:50:37,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:50:37,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:50:37,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:50:37,965 INFO L378 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 18 treesize of output 10 [2023-12-02 15:50:37,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:50:38,604 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:50:38,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 15:50:38,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 15:50:38,650 INFO L378 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 25 treesize of output 13 [2023-12-02 15:50:38,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:50:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:50:38,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:39,942 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3410) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3409 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3410) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3409) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 15:50:39,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:50:39,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707142549] [2023-12-02 15:50:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707142549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:50:39,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1570095421] [2023-12-02 15:50:39,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:50:39,950 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:50:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:50:39,951 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:50:39,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-12-02 15:55:54,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 15:55:54,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:55:54,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-02 15:55:54,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:54,968 INFO L378 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 [2023-12-02 15:55:55,182 INFO L378 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 [2023-12-02 15:55:55,196 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:55:55,197 INFO L378 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 [2023-12-02 15:55:55,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:55:55,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:55:55,281 INFO L378 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 18 treesize of output 10 [2023-12-02 15:55:55,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:55:55,923 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:55:55,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 15:55:55,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 15:55:55,968 INFO L378 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 25 treesize of output 13 [2023-12-02 15:55:55,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 15:55:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:55:55,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:55:57,189 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3963 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3964 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3964) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3963) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3964 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3964) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-12-02 15:55:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1570095421] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:55:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203861513] [2023-12-02 15:55:57,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:55:57,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:57,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:55:57,195 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:55:57,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92d17ca-c085-4488-bf36-4606ec4a18b3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process