./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:32:37,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:32:37,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:32:37,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:32:37,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:32:37,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:32:37,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:32:37,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:32:37,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:32:37,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:32:37,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:32:37,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:32:37,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:32:37,725 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:32:37,726 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:32:37,726 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:32:37,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:32:37,727 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:32:37,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:32:37,728 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:32:37,729 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:32:37,729 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:32:37,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:32:37,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:32:37,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:32:37,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:32:37,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:32:37,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:32:37,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:32:37,733 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:32:37,733 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:32:37,733 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:32:37,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:32:37,734 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:32:37,734 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:32:37,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:32:37,734 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:32:37,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:32:37,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:32:37,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:32:37,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:32:37,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:32:37,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:32:37,736 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:32:37,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:32:37,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:32:37,736 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:32:37,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:32:37,737 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_86186796-6e9f-49fa-9e82-7ef6ed47073c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2023-12-02 18:32:37,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:32:37,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:32:37,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:32:37,996 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:32:37,996 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:32:37,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-12-02 18:32:40,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:32:41,003 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:32:41,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-12-02 18:32:41,023 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/4721ec652/cee50e213a5e44b88892d32ae26e3630/FLAGe70dfc160 [2023-12-02 18:32:41,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/4721ec652/cee50e213a5e44b88892d32ae26e3630 [2023-12-02 18:32:41,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:32:41,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:32:41,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:32:41,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:32:41,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:32:41,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:32:41" (1/1) ... [2023-12-02 18:32:41,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d261bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:41, skipping insertion in model container [2023-12-02 18:32:41,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:32:41" (1/1) ... [2023-12-02 18:32:41,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:32:41,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:32:41,789 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 18:32:41,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39445693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:41, skipping insertion in model container [2023-12-02 18:32:41,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:32:41,790 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 18:32:41,791 INFO L158 Benchmark]: Toolchain (without parser) took 749.03ms. Allocated memory is still 205.5MB. Free memory was 173.6MB in the beginning and 164.8MB in the end (delta: 8.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 18:32:41,791 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:32:41,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.82ms. Allocated memory is still 205.5MB. Free memory was 173.6MB in the beginning and 164.8MB in the end (delta: 8.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 18:32:41,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.82ms. Allocated memory is still 205.5MB. Free memory was 173.6MB in the beginning and 164.8MB in the end (delta: 8.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:32:43,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:32:43,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 18:32:43,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:32:43,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:32:43,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:32:43,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:32:43,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:32:43,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:32:43,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:32:43,653 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:32:43,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:32:43,654 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:32:43,654 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:32:43,655 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:32:43,655 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:32:43,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:32:43,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:32:43,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:32:43,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:32:43,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:32:43,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:32:43,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:32:43,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:32:43,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:32:43,661 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:32:43,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:32:43,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:32:43,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:32:43,662 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:32:43,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:32:43,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:32:43,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:32:43,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:32:43,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:32:43,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:32:43,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:32:43,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:32:43,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:32:43,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:32:43,665 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:32:43,666 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:32:43,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:32:43,666 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:32:43,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:32:43,667 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_86186796-6e9f-49fa-9e82-7ef6ed47073c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2023-12-02 18:32:43,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:32:43,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:32:43,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:32:43,978 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:32:43,978 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:32:43,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-12-02 18:32:46,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:32:47,057 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:32:47,058 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-12-02 18:32:47,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/a7d6c7e78/b2ba0ce52ab548cca965eb547ef3042e/FLAG9d5d90350 [2023-12-02 18:32:47,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/data/a7d6c7e78/b2ba0ce52ab548cca965eb547ef3042e [2023-12-02 18:32:47,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:32:47,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:32:47,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:32:47,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:32:47,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:32:47,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:32:47" (1/1) ... [2023-12-02 18:32:47,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ccb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:47, skipping insertion in model container [2023-12-02 18:32:47,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:32:47" (1/1) ... [2023-12-02 18:32:47,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:32:47,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:32:47,850 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 18:32:47,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:32:47,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:32:47,971 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:32:48,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:32:48,145 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:32:48,153 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:32:48,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48 WrapperNode [2023-12-02 18:32:48,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:32:48,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:32:48,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:32:48,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:32:48,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,257 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1213 [2023-12-02 18:32:48,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:32:48,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:32:48,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:32:48,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:32:48,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:32:48,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:32:48,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:32:48,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:32:48,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (1/1) ... [2023-12-02 18:32:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:32:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:32:48,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:32:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:32:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 18:32:48,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 18:32:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 18:32:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:32:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-12-02 18:32:48,421 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-12-02 18:32:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:32:48,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:32:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:32:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:32:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-12-02 18:32:48,421 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-12-02 18:32:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:32:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-12-02 18:32:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-12-02 18:32:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:32:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:32:48,636 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:32:48,639 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:32:53,155 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:32:53,347 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:32:53,348 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-12-02 18:32:53,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:32:53 BoogieIcfgContainer [2023-12-02 18:32:53,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:32:53,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:32:53,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:32:53,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:32:53,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:32:47" (1/3) ... [2023-12-02 18:32:53,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4f058b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:32:53, skipping insertion in model container [2023-12-02 18:32:53,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:32:48" (2/3) ... [2023-12-02 18:32:53,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4f058b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:32:53, skipping insertion in model container [2023-12-02 18:32:53,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:32:53" (3/3) ... [2023-12-02 18:32:53,357 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2023-12-02 18:32:53,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:32:53,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 631 error locations. [2023-12-02 18:32:53,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:32:53,448 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;@79bb1211, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:32:53,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 631 error locations. [2023-12-02 18:32:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 1163 states, 507 states have (on average 2.5305719921104535) internal successors, (1283), 1141 states have internal predecessors, (1283), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:32:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:32:53,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:32:53,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:32:53,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:32:53,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:32:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash 64540, now seen corresponding path program 1 times [2023-12-02 18:32:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:32:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179522832] [2023-12-02 18:32:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:32:53,480 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 18:32:53,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:32:53,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:53,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:32:53,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:32:53,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:32:53,702 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 18:32:53,713 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 18:32:53,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:32:53,714 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:32:53,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179522832] [2023-12-02 18:32:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179522832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:32:53,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:32:53,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:32:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730811564] [2023-12-02 18:32:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:32:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:32:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:32:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:32:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:32:53,748 INFO L87 Difference]: Start difference. First operand has 1163 states, 507 states have (on average 2.5305719921104535) internal successors, (1283), 1141 states have internal predecessors, (1283), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) 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 18:32:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:32:56,167 INFO L93 Difference]: Finished difference Result 1400 states and 1492 transitions. [2023-12-02 18:32:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:32:56,171 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 18:32:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:32:56,188 INFO L225 Difference]: With dead ends: 1400 [2023-12-02 18:32:56,189 INFO L226 Difference]: Without dead ends: 1399 [2023-12-02 18:32:56,190 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 18:32:56,193 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 828 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:32:56,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1044 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 18:32:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2023-12-02 18:32:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1176. [2023-12-02 18:32:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 535 states have (on average 2.3626168224299064) internal successors, (1264), 1156 states have internal predecessors, (1264), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 18:32:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1298 transitions. [2023-12-02 18:32:56,290 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1298 transitions. Word has length 2 [2023-12-02 18:32:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:32:56,290 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1298 transitions. [2023-12-02 18:32:56,290 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 18:32:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1298 transitions. [2023-12-02 18:32:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 18:32:56,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:32:56,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 18:32:56,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:56,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:32:56,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:32:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 64541, now seen corresponding path program 1 times [2023-12-02 18:32:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:32:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270488073] [2023-12-02 18:32:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:32:56,495 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 18:32:56,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:32:56,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:56,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:32:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:32:56,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:32:56,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:32:56,641 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 18:32:56,655 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 18:32:56,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:32:56,655 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:32:56,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270488073] [2023-12-02 18:32:56,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270488073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:32:56,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:32:56,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:32:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456385990] [2023-12-02 18:32:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:32:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:32:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:32:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:32:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:32:56,659 INFO L87 Difference]: Start difference. First operand 1176 states and 1298 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 18:33:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:00,690 INFO L93 Difference]: Finished difference Result 1715 states and 1886 transitions. [2023-12-02 18:33:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:00,691 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 18:33:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:00,698 INFO L225 Difference]: With dead ends: 1715 [2023-12-02 18:33:00,698 INFO L226 Difference]: Without dead ends: 1715 [2023-12-02 18:33:00,698 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 18:33:00,699 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 572 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1449 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 18:33:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-12-02 18:33:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1346. [2023-12-02 18:33:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 704 states have (on average 2.3323863636363638) internal successors, (1642), 1324 states have internal predecessors, (1642), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:33:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1680 transitions. [2023-12-02 18:33:00,732 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1680 transitions. Word has length 2 [2023-12-02 18:33:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:00,732 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1680 transitions. [2023-12-02 18:33:00,732 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 18:33:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1680 transitions. [2023-12-02 18:33:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:33:00,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:00,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:33:00,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:00,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:00,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -522425799, now seen corresponding path program 1 times [2023-12-02 18:33:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488060994] [2023-12-02 18:33:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:00,936 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 18:33:00,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:00,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:00,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:01,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:33:01,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:01,068 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 18:33:01,075 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 18:33:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:33:01,148 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 18:33:01,168 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:33:01,169 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 18:33:01,188 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 18:33:01,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:01,189 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:01,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488060994] [2023-12-02 18:33:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488060994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:01,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:01,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:33:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963458242] [2023-12-02 18:33:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:01,191 INFO L87 Difference]: Start difference. First operand 1346 states and 1680 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 18:33:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:06,473 INFO L93 Difference]: Finished difference Result 2319 states and 2733 transitions. [2023-12-02 18:33:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:06,474 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 18:33:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:06,484 INFO L225 Difference]: With dead ends: 2319 [2023-12-02 18:33:06,484 INFO L226 Difference]: Without dead ends: 2319 [2023-12-02 18:33:06,485 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 18:33:06,485 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1832 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:06,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 1182 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-02 18:33:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2023-12-02 18:33:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1462. [2023-12-02 18:33:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 820 states have (on average 2.3121951219512193) internal successors, (1896), 1440 states have internal predecessors, (1896), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:33:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1934 transitions. [2023-12-02 18:33:06,534 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1934 transitions. Word has length 6 [2023-12-02 18:33:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:06,535 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 1934 transitions. [2023-12-02 18:33:06,535 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 18:33:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1934 transitions. [2023-12-02 18:33:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:33:06,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:06,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:06,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:06,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 984669438, now seen corresponding path program 1 times [2023-12-02 18:33:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187160925] [2023-12-02 18:33:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:06,738 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 18:33:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:06,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:06,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:06,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:33:06,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:06,860 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 18:33:06,871 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 18:33:06,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:06,871 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187160925] [2023-12-02 18:33:06,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187160925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:06,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:06,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:33:06,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348317129] [2023-12-02 18:33:06,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:06,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:33:06,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:06,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:33:06,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:33:06,873 INFO L87 Difference]: Start difference. First operand 1462 states and 1934 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 18:33:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:09,412 INFO L93 Difference]: Finished difference Result 1941 states and 2638 transitions. [2023-12-02 18:33:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:09,414 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 18:33:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:09,423 INFO L225 Difference]: With dead ends: 1941 [2023-12-02 18:33:09,423 INFO L226 Difference]: Without dead ends: 1941 [2023-12-02 18:33:09,423 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 18:33:09,424 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 869 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:09,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1335 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 18:33:09,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2023-12-02 18:33:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1417. [2023-12-02 18:33:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 820 states have (on average 2.2402439024390244) internal successors, (1837), 1395 states have internal predecessors, (1837), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:33:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1875 transitions. [2023-12-02 18:33:09,466 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1875 transitions. Word has length 7 [2023-12-02 18:33:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 1875 transitions. [2023-12-02 18:33:09,467 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 18:33:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1875 transitions. [2023-12-02 18:33:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:33:09,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:09,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:09,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:09,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:09,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:09,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 984669439, now seen corresponding path program 1 times [2023-12-02 18:33:09,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:09,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923560263] [2023-12-02 18:33:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:09,670 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 18:33:09,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:09,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:09,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:09,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:33:09,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:09,834 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 18:33:09,858 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 18:33:09,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:09,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923560263] [2023-12-02 18:33:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923560263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:09,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:33:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098137995] [2023-12-02 18:33:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:33:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:33:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:33:09,861 INFO L87 Difference]: Start difference. First operand 1417 states and 1875 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 18:33:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:13,703 INFO L93 Difference]: Finished difference Result 1974 states and 2627 transitions. [2023-12-02 18:33:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:13,705 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 18:33:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:13,712 INFO L225 Difference]: With dead ends: 1974 [2023-12-02 18:33:13,712 INFO L226 Difference]: Without dead ends: 1974 [2023-12-02 18:33:13,713 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 18:33:13,713 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 620 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:13,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1600 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 18:33:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-12-02 18:33:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1407. [2023-12-02 18:33:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 820 states have (on average 2.2109756097560975) internal successors, (1813), 1385 states have internal predecessors, (1813), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:33:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1851 transitions. [2023-12-02 18:33:13,764 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1851 transitions. Word has length 7 [2023-12-02 18:33:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:13,764 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1851 transitions. [2023-12-02 18:33:13,765 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 18:33:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1851 transitions. [2023-12-02 18:33:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 18:33:13,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:13,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:13,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Forceful destruction successful, exit code 0 [2023-12-02 18:33:13,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:13,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:13,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -320660464, now seen corresponding path program 1 times [2023-12-02 18:33:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374423334] [2023-12-02 18:33:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:13,970 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 18:33:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:13,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:13,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:14,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:33:14,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:14,175 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 18:33:14,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:14,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:14,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374423334] [2023-12-02 18:33:14,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374423334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:14,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:14,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535849232] [2023-12-02 18:33:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:14,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:14,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:14,178 INFO L87 Difference]: Start difference. First operand 1407 states and 1851 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:16,239 INFO L93 Difference]: Finished difference Result 2018 states and 2566 transitions. [2023-12-02 18:33:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:33:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 18:33:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:16,247 INFO L225 Difference]: With dead ends: 2018 [2023-12-02 18:33:16,248 INFO L226 Difference]: Without dead ends: 2018 [2023-12-02 18:33:16,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:33:16,248 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 682 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:16,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 3075 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 18:33:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2023-12-02 18:33:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1624. [2023-12-02 18:33:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1034 states have (on average 2.2088974854932304) internal successors, (2284), 1599 states have internal predecessors, (2284), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:33:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2328 transitions. [2023-12-02 18:33:16,276 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2328 transitions. Word has length 12 [2023-12-02 18:33:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:16,276 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2328 transitions. [2023-12-02 18:33:16,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2328 transitions. [2023-12-02 18:33:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 18:33:16,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:16,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:16,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:16,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:16,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr332REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:16,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -909869265, now seen corresponding path program 1 times [2023-12-02 18:33:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935029561] [2023-12-02 18:33:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:16,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:33:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:16,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:16,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:16,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:33:16,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:16,602 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 18:33:16,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:16,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935029561] [2023-12-02 18:33:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935029561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148151219] [2023-12-02 18:33:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:33:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:33:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:33:16,605 INFO L87 Difference]: Start difference. First operand 1624 states and 2328 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 18:33:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:17,544 INFO L93 Difference]: Finished difference Result 1540 states and 2168 transitions. [2023-12-02 18:33:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:17,546 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 18:33:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:17,552 INFO L225 Difference]: With dead ends: 1540 [2023-12-02 18:33:17,552 INFO L226 Difference]: Without dead ends: 1540 [2023-12-02 18:33:17,552 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 18:33:17,553 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 70 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:17,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1935 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:33:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-12-02 18:33:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1540. [2023-12-02 18:33:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 974 states have (on average 2.1806981519507187) internal successors, (2124), 1515 states have internal predecessors, (2124), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:33:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2168 transitions. [2023-12-02 18:33:17,597 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2168 transitions. Word has length 12 [2023-12-02 18:33:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:17,597 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2168 transitions. [2023-12-02 18:33:17,597 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 18:33:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2168 transitions. [2023-12-02 18:33:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:33:17,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:17,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:17,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:17,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:17,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:17,809 INFO L85 PathProgramCache]: Analyzing trace with hash -607253788, now seen corresponding path program 1 times [2023-12-02 18:33:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:17,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694424276] [2023-12-02 18:33:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:17,810 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 18:33:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:17,811 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:17,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:33:18,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:18,006 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:33:18,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:33:18,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 18:33:18,012 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 18:33:18,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:33:18,073 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 18:33:18,088 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 18:33:18,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:18,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:18,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694424276] [2023-12-02 18:33:18,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694424276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:33:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774487730] [2023-12-02 18:33:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:18,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:18,091 INFO L87 Difference]: Start difference. First operand 1540 states and 2168 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:20,486 INFO L93 Difference]: Finished difference Result 1704 states and 2090 transitions. [2023-12-02 18:33:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:20,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 18:33:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:20,493 INFO L225 Difference]: With dead ends: 1704 [2023-12-02 18:33:20,493 INFO L226 Difference]: Without dead ends: 1704 [2023-12-02 18:33:20,493 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 18:33:20,494 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 426 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:20,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 3177 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 18:33:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2023-12-02 18:33:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1273. [2023-12-02 18:33:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 709 states have (on average 2.1763046544428772) internal successors, (1543), 1250 states have internal predecessors, (1543), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1583 transitions. [2023-12-02 18:33:20,521 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1583 transitions. Word has length 15 [2023-12-02 18:33:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:20,521 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1583 transitions. [2023-12-02 18:33:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1583 transitions. [2023-12-02 18:33:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:33:20,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:20,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:20,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:20,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:20,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1442573483, now seen corresponding path program 1 times [2023-12-02 18:33:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416029728] [2023-12-02 18:33:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:20,724 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 18:33:20,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:20,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:20,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:20,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:33:20,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:20,910 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 18:33:20,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:20,911 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416029728] [2023-12-02 18:33:20,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416029728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:20,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:20,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:20,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259286456] [2023-12-02 18:33:20,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:20,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:33:20,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:20,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:33:20,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:33:20,912 INFO L87 Difference]: Start difference. First operand 1273 states and 1583 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 18:33:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:21,795 INFO L93 Difference]: Finished difference Result 1219 states and 1503 transitions. [2023-12-02 18:33:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:21,797 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 18:33:21,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:21,802 INFO L225 Difference]: With dead ends: 1219 [2023-12-02 18:33:21,802 INFO L226 Difference]: Without dead ends: 1219 [2023-12-02 18:33:21,802 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 18:33:21,803 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 70 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:21,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1861 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:33:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-02 18:33:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2023-12-02 18:33:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 679 states have (on average 2.154639175257732) internal successors, (1463), 1196 states have internal predecessors, (1463), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1503 transitions. [2023-12-02 18:33:21,819 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1503 transitions. Word has length 15 [2023-12-02 18:33:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:21,819 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1503 transitions. [2023-12-02 18:33:21,819 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 18:33:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1503 transitions. [2023-12-02 18:33:21,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 18:33:21,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:21,820 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 18:33:21,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:22,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:22,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:22,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 961317391, now seen corresponding path program 1 times [2023-12-02 18:33:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871001892] [2023-12-02 18:33:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:22,022 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 18:33:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:22,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:22,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:33:22,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:22,231 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 18:33:22,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:22,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:22,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871001892] [2023-12-02 18:33:22,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871001892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:22,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:22,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:33:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647576533] [2023-12-02 18:33:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:22,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:22,234 INFO L87 Difference]: Start difference. First operand 1219 states and 1503 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 18:33:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:23,325 INFO L93 Difference]: Finished difference Result 1205 states and 1461 transitions. [2023-12-02 18:33:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:23,327 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 18:33:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:23,331 INFO L225 Difference]: With dead ends: 1205 [2023-12-02 18:33:23,331 INFO L226 Difference]: Without dead ends: 1205 [2023-12-02 18:33:23,332 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 18:33:23,332 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 58 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:23,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2748 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:33:23,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-12-02 18:33:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1203. [2023-12-02 18:33:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 677 states have (on average 2.0960118168389954) internal successors, (1419), 1180 states have internal predecessors, (1419), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1459 transitions. [2023-12-02 18:33:23,350 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1459 transitions. Word has length 17 [2023-12-02 18:33:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:23,350 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1459 transitions. [2023-12-02 18:33:23,351 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 18:33:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1459 transitions. [2023-12-02 18:33:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 18:33:23,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:23,352 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 18:33:23,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:23,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:23,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 656934686, now seen corresponding path program 1 times [2023-12-02 18:33:23,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:23,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787209792] [2023-12-02 18:33:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:23,557 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 18:33:23,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:23,560 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:23,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:23,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:33:23,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:23,806 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 18:33:23,989 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 18:33:23,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:23,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:23,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787209792] [2023-12-02 18:33:23,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787209792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:23,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016637948] [2023-12-02 18:33:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:23,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:23,991 INFO L87 Difference]: Start difference. First operand 1203 states and 1459 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 18:33:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:28,348 INFO L93 Difference]: Finished difference Result 1670 states and 2052 transitions. [2023-12-02 18:33:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:28,349 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 18:33:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:28,355 INFO L225 Difference]: With dead ends: 1670 [2023-12-02 18:33:28,355 INFO L226 Difference]: Without dead ends: 1670 [2023-12-02 18:33:28,356 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 18:33:28,356 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 523 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:28,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 2238 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-02 18:33:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2023-12-02 18:33:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1199. [2023-12-02 18:33:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 677 states have (on average 2.0841949778434268) internal successors, (1411), 1176 states have internal predecessors, (1411), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1451 transitions. [2023-12-02 18:33:28,373 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1451 transitions. Word has length 31 [2023-12-02 18:33:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:28,373 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1451 transitions. [2023-12-02 18:33:28,373 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 18:33:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1451 transitions. [2023-12-02 18:33:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 18:33:28,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:28,374 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 18:33:28,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:33:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:28,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:28,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 656934685, now seen corresponding path program 1 times [2023-12-02 18:33:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947129094] [2023-12-02 18:33:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:28,576 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 18:33:28,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:28,577 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:28,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:28,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:33:28,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:28,733 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 18:33:28,809 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 18:33:28,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:28,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947129094] [2023-12-02 18:33:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947129094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173523310] [2023-12-02 18:33:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:28,811 INFO L87 Difference]: Start difference. First operand 1199 states and 1451 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 18:33:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:31,525 INFO L93 Difference]: Finished difference Result 1579 states and 1953 transitions. [2023-12-02 18:33:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:31,525 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 18:33:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:31,532 INFO L225 Difference]: With dead ends: 1579 [2023-12-02 18:33:31,532 INFO L226 Difference]: Without dead ends: 1579 [2023-12-02 18:33:31,532 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 18:33:31,533 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 754 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:31,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1386 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 18:33:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-02 18:33:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1195. [2023-12-02 18:33:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 677 states have (on average 2.072378138847858) internal successors, (1403), 1172 states have internal predecessors, (1403), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1443 transitions. [2023-12-02 18:33:31,549 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1443 transitions. Word has length 31 [2023-12-02 18:33:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:31,549 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1443 transitions. [2023-12-02 18:33:31,549 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 18:33:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1443 transitions. [2023-12-02 18:33:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 18:33:31,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:31,551 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] [2023-12-02 18:33:31,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:31,752 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 863160283, now seen corresponding path program 1 times [2023-12-02 18:33:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223645155] [2023-12-02 18:33:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:33:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:31,754 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:31,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:31,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:33:31,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:32,018 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 18:33:32,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:32,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223645155] [2023-12-02 18:33:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223645155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:32,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:33:32,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500480918] [2023-12-02 18:33:32,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:32,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:32,020 INFO L87 Difference]: Start difference. First operand 1195 states and 1443 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:33,012 INFO L93 Difference]: Finished difference Result 1183 states and 1423 transitions. [2023-12-02 18:33:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:33,014 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-02 18:33:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:33,018 INFO L225 Difference]: With dead ends: 1183 [2023-12-02 18:33:33,018 INFO L226 Difference]: Without dead ends: 1183 [2023-12-02 18:33:33,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 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 18:33:33,019 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 23 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:33,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2734 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:33:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-12-02 18:33:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2023-12-02 18:33:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 665 states have (on average 2.079699248120301) internal successors, (1383), 1160 states have internal predecessors, (1383), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 18:33:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1423 transitions. [2023-12-02 18:33:33,033 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1423 transitions. Word has length 51 [2023-12-02 18:33:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:33,034 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1423 transitions. [2023-12-02 18:33:33,034 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1423 transitions. [2023-12-02 18:33:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 18:33:33,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:33,035 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] [2023-12-02 18:33:33,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Forceful destruction successful, exit code 0 [2023-12-02 18:33:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:33,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:33,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash 926748, now seen corresponding path program 1 times [2023-12-02 18:33:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051955076] [2023-12-02 18:33:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:33,237 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 18:33:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:33,238 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:33,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:33,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:33:33,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:33,577 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-02 18:33:33,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-12-02 18:33:33,633 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 18:33:33,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-12-02 18:33:34,216 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 18:33:34,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:34,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:34,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051955076] [2023-12-02 18:33:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051955076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:34,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:34,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:33:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653230973] [2023-12-02 18:33:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:33:34,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:33:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:33:34,218 INFO L87 Difference]: Start difference. First operand 1183 states and 1423 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:38,699 INFO L93 Difference]: Finished difference Result 2171 states and 2607 transitions. [2023-12-02 18:33:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:33:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-02 18:33:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:38,711 INFO L225 Difference]: With dead ends: 2171 [2023-12-02 18:33:38,711 INFO L226 Difference]: Without dead ends: 2171 [2023-12-02 18:33:38,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:33:38,712 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 1763 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 1777 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 18:33:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-12-02 18:33:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1546. [2023-12-02 18:33:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1012 states have (on average 2.0622529644268774) internal successors, (2087), 1510 states have internal predecessors, (2087), 35 states have call successors, (35), 9 states have call predecessors, (35), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-02 18:33:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2153 transitions. [2023-12-02 18:33:38,736 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2153 transitions. Word has length 55 [2023-12-02 18:33:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:38,736 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 2153 transitions. [2023-12-02 18:33:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2153 transitions. [2023-12-02 18:33:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 18:33:38,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:38,737 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] [2023-12-02 18:33:38,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:38,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 926749, now seen corresponding path program 1 times [2023-12-02 18:33:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323930272] [2023-12-02 18:33:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:38,939 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 18:33:38,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:38,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:38,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:39,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:33:39,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:33:39,272 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 18:33:39,324 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:33:39,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 18:33:39,824 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 18:33:39,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:39,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:39,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323930272] [2023-12-02 18:33:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323930272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:33:39,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391710129] [2023-12-02 18:33:39,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:39,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:33:39,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:33:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:39,826 INFO L87 Difference]: Start difference. First operand 1546 states and 2153 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:43,226 INFO L93 Difference]: Finished difference Result 1551 states and 2159 transitions. [2023-12-02 18:33:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:33:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-02 18:33:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:43,234 INFO L225 Difference]: With dead ends: 1551 [2023-12-02 18:33:43,235 INFO L226 Difference]: Without dead ends: 1551 [2023-12-02 18:33:43,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:33:43,235 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 0 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:43,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1906 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 18:33:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-12-02 18:33:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1551. [2023-12-02 18:33:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1016 states have (on average 2.0580708661417324) internal successors, (2091), 1514 states have internal predecessors, (2091), 36 states have call successors, (36), 10 states have call predecessors, (36), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 18:33:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2159 transitions. [2023-12-02 18:33:43,257 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2159 transitions. Word has length 55 [2023-12-02 18:33:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:43,258 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 2159 transitions. [2023-12-02 18:33:43,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2159 transitions. [2023-12-02 18:33:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 18:33:43,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:43,259 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] [2023-12-02 18:33:43,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:43,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:43,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1243031911, now seen corresponding path program 1 times [2023-12-02 18:33:43,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172417545] [2023-12-02 18:33:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:43,460 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 18:33:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:43,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:43,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:33:43,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:43,822 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 18:33:43,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:43,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172417545] [2023-12-02 18:33:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172417545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:43,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:33:43,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707732630] [2023-12-02 18:33:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:43,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:33:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:33:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:33:43,824 INFO L87 Difference]: Start difference. First operand 1551 states and 2159 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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 18:33:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:45,502 INFO L93 Difference]: Finished difference Result 1555 states and 2167 transitions. [2023-12-02 18:33:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:33:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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 59 [2023-12-02 18:33:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:45,510 INFO L225 Difference]: With dead ends: 1555 [2023-12-02 18:33:45,510 INFO L226 Difference]: Without dead ends: 1555 [2023-12-02 18:33:45,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:33:45,511 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 19 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:45,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3597 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 18:33:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-12-02 18:33:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1553. [2023-12-02 18:33:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1017 states have (on average 2.057030481809243) internal successors, (2092), 1515 states have internal predecessors, (2092), 36 states have call successors, (36), 10 states have call predecessors, (36), 8 states have return successors, (35), 28 states have call predecessors, (35), 32 states have call successors, (35) [2023-12-02 18:33:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2163 transitions. [2023-12-02 18:33:45,533 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2163 transitions. Word has length 59 [2023-12-02 18:33:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:45,533 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2163 transitions. [2023-12-02 18:33:45,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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 18:33:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2163 transitions. [2023-12-02 18:33:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 18:33:45,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:45,534 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] [2023-12-02 18:33:45,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:45,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:45,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:45,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:45,735 INFO L85 PathProgramCache]: Analyzing trace with hash 541184168, now seen corresponding path program 1 times [2023-12-02 18:33:45,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509176144] [2023-12-02 18:33:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:45,736 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 18:33:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:45,736 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:45,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:45,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:33:46,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:46,034 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 18:33:46,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:46,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:46,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509176144] [2023-12-02 18:33:46,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509176144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:46,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:46,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:33:46,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153630602] [2023-12-02 18:33:46,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:33:46,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:33:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:33:46,036 INFO L87 Difference]: Start difference. First operand 1553 states and 2163 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:47,651 INFO L93 Difference]: Finished difference Result 1577 states and 2187 transitions. [2023-12-02 18:33:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:33:47,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-02 18:33:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:47,659 INFO L225 Difference]: With dead ends: 1577 [2023-12-02 18:33:47,659 INFO L226 Difference]: Without dead ends: 1577 [2023-12-02 18:33:47,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:33:47,660 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 16 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4643 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:47,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4643 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 18:33:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-02 18:33:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1573. [2023-12-02 18:33:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1031 states have (on average 2.0475266731328805) internal successors, (2111), 1531 states have internal predecessors, (2111), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-02 18:33:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2184 transitions. [2023-12-02 18:33:47,692 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2184 transitions. Word has length 62 [2023-12-02 18:33:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:47,692 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2184 transitions. [2023-12-02 18:33:47,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:33:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2184 transitions. [2023-12-02 18:33:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 18:33:47,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:47,698 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 18:33:47,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:33:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:47,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:47,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 498416841, now seen corresponding path program 1 times [2023-12-02 18:33:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977217790] [2023-12-02 18:33:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:47,900 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 18:33:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:47,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:47,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:48,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:33:48,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:48,353 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 18:33:48,456 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2023-12-02 18:33:48,471 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:33:48,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:33:48,480 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 18:33:48,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:48,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977217790] [2023-12-02 18:33:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977217790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:33:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004909690] [2023-12-02 18:33:48,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:33:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:33:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-02 18:33:48,483 INFO L87 Difference]: Start difference. First operand 1573 states and 2184 transitions. Second operand has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:33:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:51,123 INFO L93 Difference]: Finished difference Result 1956 states and 2692 transitions. [2023-12-02 18:33:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:33:51,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-12-02 18:33:51,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:51,128 INFO L225 Difference]: With dead ends: 1956 [2023-12-02 18:33:51,128 INFO L226 Difference]: Without dead ends: 1956 [2023-12-02 18:33:51,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-02 18:33:51,129 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 723 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1401 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:51,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1329 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1341 Invalid, 0 Unknown, 1401 Unchecked, 2.6s Time] [2023-12-02 18:33:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2023-12-02 18:33:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1572. [2023-12-02 18:33:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1031 states have (on average 2.0455868089233755) internal successors, (2109), 1530 states have internal predecessors, (2109), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-02 18:33:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2182 transitions. [2023-12-02 18:33:51,151 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2182 transitions. Word has length 64 [2023-12-02 18:33:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:51,152 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2182 transitions. [2023-12-02 18:33:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:33:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2182 transitions. [2023-12-02 18:33:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 18:33:51,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:51,152 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 18:33:51,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:33:51,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:51,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:51,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash 498416842, now seen corresponding path program 1 times [2023-12-02 18:33:51,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:51,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769125722] [2023-12-02 18:33:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:51,354 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 18:33:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:51,355 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:51,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:51,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:33:51,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:51,772 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 18:33:51,778 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 18:33:52,183 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2023-12-02 18:33:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:33:52,194 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 18:33:52,205 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:33:52,205 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 18:33:52,217 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 18:33:52,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:52,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:52,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769125722] [2023-12-02 18:33:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769125722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:52,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:33:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894933388] [2023-12-02 18:33:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:52,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:33:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:33:52,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-02 18:33:52,220 INFO L87 Difference]: Start difference. First operand 1572 states and 2182 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:33:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:33:58,711 INFO L93 Difference]: Finished difference Result 2515 states and 3479 transitions. [2023-12-02 18:33:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:33:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-12-02 18:33:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:33:58,722 INFO L225 Difference]: With dead ends: 2515 [2023-12-02 18:33:58,722 INFO L226 Difference]: Without dead ends: 2515 [2023-12-02 18:33:58,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-02 18:33:58,723 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 835 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1811 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:33:58,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1990 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3077 Invalid, 0 Unknown, 1811 Unchecked, 6.4s Time] [2023-12-02 18:33:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-12-02 18:33:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 1568. [2023-12-02 18:33:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1035 states have (on average 2.026086956521739) internal successors, (2097), 1526 states have internal predecessors, (2097), 38 states have call successors, (38), 14 states have call predecessors, (38), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-02 18:33:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2170 transitions. [2023-12-02 18:33:58,752 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2170 transitions. Word has length 64 [2023-12-02 18:33:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:33:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2170 transitions. [2023-12-02 18:33:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:33:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2170 transitions. [2023-12-02 18:33:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 18:33:58,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:33:58,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:33:58,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:58,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:58,954 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:33:58,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:33:58,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1620798592, now seen corresponding path program 1 times [2023-12-02 18:33:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:33:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829724754] [2023-12-02 18:33:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:33:58,955 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 18:33:58,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:33:58,956 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:33:58,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (21)] Waiting until timeout for monitored process [2023-12-02 18:33:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:33:59,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:33:59,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:33:59,241 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 18:33:59,259 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 18:33:59,284 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 18:33:59,318 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 18:33:59,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:33:59,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:33:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829724754] [2023-12-02 18:33:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829724754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:33:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:33:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:33:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817276800] [2023-12-02 18:33:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:33:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:33:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:33:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:33:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:33:59,321 INFO L87 Difference]: Start difference. First operand 1568 states and 2170 transitions. Second operand has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:34:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:04,226 INFO L93 Difference]: Finished difference Result 1579 states and 2182 transitions. [2023-12-02 18:34:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:34:04,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-12-02 18:34:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:04,231 INFO L225 Difference]: With dead ends: 1579 [2023-12-02 18:34:04,231 INFO L226 Difference]: Without dead ends: 1579 [2023-12-02 18:34:04,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:34:04,232 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 14 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3976 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-02 18:34:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-02 18:34:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1578. [2023-12-02 18:34:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1043 states have (on average 2.022051773729626) internal successors, (2109), 1534 states have internal predecessors, (2109), 38 states have call successors, (38), 16 states have call predecessors, (38), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-02 18:34:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2182 transitions. [2023-12-02 18:34:04,258 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2182 transitions. Word has length 70 [2023-12-02 18:34:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:04,258 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2182 transitions. [2023-12-02 18:34:04,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:34:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2182 transitions. [2023-12-02 18:34:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:34:04,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:04,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:04,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (21)] Ended with exit code 0 [2023-12-02 18:34:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:04,460 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:34:04,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1294851276, now seen corresponding path program 1 times [2023-12-02 18:34:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:34:04,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057830483] [2023-12-02 18:34:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:04,462 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 18:34:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:34:04,463 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:04,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Waiting until timeout for monitored process [2023-12-02 18:34:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:04,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 18:34:04,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:04,807 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 18:34:04,838 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 18:34:04,850 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 18:34:04,890 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 18:34:04,982 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 18:34:04,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:04,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:34:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057830483] [2023-12-02 18:34:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057830483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:04,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 18:34:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366319599] [2023-12-02 18:34:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:04,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:34:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:34:04,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:34:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:34:04,984 INFO L87 Difference]: Start difference. First operand 1578 states and 2182 transitions. Second operand has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:12,000 INFO L93 Difference]: Finished difference Result 1578 states and 2180 transitions. [2023-12-02 18:34:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:34:12,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2023-12-02 18:34:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:12,004 INFO L225 Difference]: With dead ends: 1578 [2023-12-02 18:34:12,004 INFO L226 Difference]: Without dead ends: 1578 [2023-12-02 18:34:12,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:34:12,005 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 12 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4729 SdHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:12,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4729 Invalid, 3543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 18:34:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-02 18:34:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1578. [2023-12-02 18:34:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1043 states have (on average 2.0201342281879193) internal successors, (2107), 1534 states have internal predecessors, (2107), 38 states have call successors, (38), 16 states have call predecessors, (38), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2023-12-02 18:34:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2180 transitions. [2023-12-02 18:34:12,027 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2180 transitions. Word has length 71 [2023-12-02 18:34:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:12,028 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2180 transitions. [2023-12-02 18:34:12,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:34:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2180 transitions. [2023-12-02 18:34:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 18:34:12,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:12,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:12,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:34:12,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:12,229 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:34:12,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:12,230 INFO L85 PathProgramCache]: Analyzing trace with hash 591418728, now seen corresponding path program 1 times [2023-12-02 18:34:12,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:34:12,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179356572] [2023-12-02 18:34:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:12,230 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 18:34:12,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:34:12,231 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:12,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:12,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:34:12,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:12,557 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 18:34:12,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:34:12,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:34:12,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179356572] [2023-12-02 18:34:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179356572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:34:12,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210567485] [2023-12-02 18:34:12,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:34:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:34:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:34:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:34:12,559 INFO L87 Difference]: Start difference. First operand 1578 states and 2180 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:34:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:13,969 INFO L93 Difference]: Finished difference Result 1586 states and 2190 transitions. [2023-12-02 18:34:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:34:13,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-12-02 18:34:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:13,973 INFO L225 Difference]: With dead ends: 1586 [2023-12-02 18:34:13,973 INFO L226 Difference]: Without dead ends: 1584 [2023-12-02 18:34:13,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:34:13,974 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 4 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:13,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3670 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:34:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2023-12-02 18:34:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2023-12-02 18:34:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1047 states have (on average 2.018147086914995) internal successors, (2113), 1540 states have internal predecessors, (2113), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:34:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2188 transitions. [2023-12-02 18:34:13,989 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2188 transitions. Word has length 76 [2023-12-02 18:34:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:13,990 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2188 transitions. [2023-12-02 18:34:13,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:34:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2188 transitions. [2023-12-02 18:34:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 18:34:13,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:13,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:13,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:14,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:14,191 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:34:14,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash -128198608, now seen corresponding path program 1 times [2023-12-02 18:34:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:34:14,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484832140] [2023-12-02 18:34:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:34:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:34:14,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:14,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Waiting until timeout for monitored process [2023-12-02 18:34:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:14,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:34:14,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:14,550 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 18:34:14,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:14,665 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 18:34:14,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:34:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484832140] [2023-12-02 18:34:14,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484832140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1574408848] [2023-12-02 18:34:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:14,666 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:34:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:34:14,667 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:34:14,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 18:34:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:15,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:34:15,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:15,236 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 18:34:15,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:15,287 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 18:34:15,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1574408848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097459181] [2023-12-02 18:34:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:15,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:15,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:15,289 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:15,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 18:34:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:15,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:34:15,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:15,616 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 18:34:15,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:15,666 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 18:34:15,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097459181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:15,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:34:15,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2023-12-02 18:34:15,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369850084] [2023-12-02 18:34:15,667 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:34:15,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:34:15,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:34:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:34:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:34:15,668 INFO L87 Difference]: Start difference. First operand 1584 states and 2188 transitions. Second operand has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:34:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:17,284 INFO L93 Difference]: Finished difference Result 1598 states and 2206 transitions. [2023-12-02 18:34:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:34:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2023-12-02 18:34:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:17,288 INFO L225 Difference]: With dead ends: 1598 [2023-12-02 18:34:17,288 INFO L226 Difference]: Without dead ends: 1594 [2023-12-02 18:34:17,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:34:17,289 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 24 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:17,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3671 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 18:34:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-12-02 18:34:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1592. [2023-12-02 18:34:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1055 states have (on average 2.0123222748815164) internal successors, (2123), 1548 states have internal predecessors, (2123), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:34:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2198 transitions. [2023-12-02 18:34:17,307 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2198 transitions. Word has length 77 [2023-12-02 18:34:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:17,308 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2198 transitions. [2023-12-02 18:34:17,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:34:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2198 transitions. [2023-12-02 18:34:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 18:34:17,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:17,309 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:17,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-02 18:34:17,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 18:34:17,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:34:17,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:17,910 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:34:17,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1332660072, now seen corresponding path program 2 times [2023-12-02 18:34:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:34:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122695894] [2023-12-02 18:34:17,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:34:17,911 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 18:34:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:34:17,911 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:34:17,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (27)] Waiting until timeout for monitored process [2023-12-02 18:34:18,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:34:18,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:34:18,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:34:18,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:18,592 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 18:34:18,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:18,911 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 18:34:18,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:34:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122695894] [2023-12-02 18:34:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122695894] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2002963220] [2023-12-02 18:34:18,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:34:18,912 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:34:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:34:18,913 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:34:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 18:34:20,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:34:20,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:34:20,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:34:20,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:34:20,867 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 18:34:20,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:34:20,941 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 18:34:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2002963220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:34:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114927122] [2023-12-02 18:34:20,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:34:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:34:20,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:20,942 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:34:20,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:35:17,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:35:17,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:35:17,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:35:17,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:17,810 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:35:17,810 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 18:35:17,841 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 18:35:18,215 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:35:18,215 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 18:35:18,281 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 33 treesize of output 15 [2023-12-02 18:35:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:35:18,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:18,453 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:35:18,454 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 18:35:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114927122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:35:18,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:35:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 14] total 29 [2023-12-02 18:35:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653088526] [2023-12-02 18:35:18,571 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:35:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 18:35:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:35:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 18:35:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=799, Unknown=13, NotChecked=0, Total=930 [2023-12-02 18:35:18,572 INFO L87 Difference]: Start difference. First operand 1592 states and 2198 transitions. Second operand has 29 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:35:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:35,588 INFO L93 Difference]: Finished difference Result 2001 states and 2746 transitions. [2023-12-02 18:35:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 18:35:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2023-12-02 18:35:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:35,593 INFO L225 Difference]: With dead ends: 2001 [2023-12-02 18:35:35,593 INFO L226 Difference]: Without dead ends: 1997 [2023-12-02 18:35:35,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=622, Invalid=3271, Unknown=13, NotChecked=0, Total=3906 [2023-12-02 18:35:35,594 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 783 mSDsluCounter, 9104 mSDsCounter, 0 mSdLazyCounter, 9747 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 9675 SdHoareTripleChecker+Invalid, 9805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 9747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:35,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 9675 Invalid, 9805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 9747 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 18:35:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2023-12-02 18:35:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1609. [2023-12-02 18:35:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1073 states have (on average 1.9990680335507922) internal successors, (2145), 1565 states have internal predecessors, (2145), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:35:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2220 transitions. [2023-12-02 18:35:35,611 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2220 transitions. Word has length 80 [2023-12-02 18:35:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:35,611 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 2220 transitions. [2023-12-02 18:35:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:35:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2220 transitions. [2023-12-02 18:35:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 18:35:35,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:35,612 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:35:35,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 18:35:35,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (27)] Ended with exit code 0 [2023-12-02 18:35:36,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-12-02 18:35:36,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:35:36,213 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:35:36,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -115633559, now seen corresponding path program 1 times [2023-12-02 18:35:36,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:35:36,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038614132] [2023-12-02 18:35:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:36,214 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 18:35:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:35:36,215 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:35:36,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Waiting until timeout for monitored process [2023-12-02 18:35:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:36,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 18:35:36,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:36,823 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 18:35:36,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:37,597 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 18:35:37,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:35:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038614132] [2023-12-02 18:35:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038614132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:37,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617567429] [2023-12-02 18:35:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:37,598 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:35:37,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:35:37,599 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:35:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-02 18:35:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:38,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 18:35:38,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:38,262 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 18:35:38,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:38,404 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 18:35:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [617567429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580816316] [2023-12-02 18:35:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:38,405 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:35:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 18:35:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:38,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:35:38,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:38,898 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 18:35:38,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:40,481 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 18:35:40,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580816316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:40,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:35:40,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 15, 15, 15] total 41 [2023-12-02 18:35:40,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862293232] [2023-12-02 18:35:40,482 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:35:40,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-02 18:35:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:35:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-02 18:35:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1187, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 18:35:40,484 INFO L87 Difference]: Start difference. First operand 1609 states and 2220 transitions. Second operand has 41 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 41 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 18:35:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:51,197 INFO L93 Difference]: Finished difference Result 1653 states and 2294 transitions. [2023-12-02 18:35:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 18:35:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 41 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2023-12-02 18:35:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:51,202 INFO L225 Difference]: With dead ends: 1653 [2023-12-02 18:35:51,202 INFO L226 Difference]: Without dead ends: 1647 [2023-12-02 18:35:51,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1295, Invalid=2737, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 18:35:51,204 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 40 mSDsluCounter, 18304 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19224 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:51,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19224 Invalid, 2831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 18:35:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2023-12-02 18:35:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2023-12-02 18:35:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1109 states have (on average 1.975653742110009) internal successors, (2191), 1601 states have internal predecessors, (2191), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:35:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2266 transitions. [2023-12-02 18:35:51,230 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2266 transitions. Word has length 86 [2023-12-02 18:35:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:51,230 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2266 transitions. [2023-12-02 18:35:51,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 41 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 18:35:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2266 transitions. [2023-12-02 18:35:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 18:35:51,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:51,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:35:51,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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)] Ended with exit code 0 [2023-12-02 18:35:51,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 18:35:51,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-12-02 18:35:51,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:35:51,832 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:35:51,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1332189079, now seen corresponding path program 2 times [2023-12-02 18:35:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:35:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687695675] [2023-12-02 18:35:51,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:35:51,833 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 18:35:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:35:51,834 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:35:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (33)] Waiting until timeout for monitored process [2023-12-02 18:35:52,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:35:52,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:35:52,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 18:35:52,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:53,001 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 18:35:53,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:55,201 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 18:35:55,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:35:55,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687695675] [2023-12-02 18:35:55,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687695675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:55,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273251255] [2023-12-02 18:35:55,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:35:55,202 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:35:55,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:35:55,202 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:35:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-02 18:35:57,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:35:57,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:35:57,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 18:35:57,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:35:57,409 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 18:35:57,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:35:57,755 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 18:35:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273251255] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:35:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974485018] [2023-12-02 18:35:57,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:35:57,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:35:57,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:35:57,756 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:35:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 18:38:11,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:38:11,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:38:11,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 18:38:11,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:38:11,585 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 18:38:11,681 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:38:11,681 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 18:38:11,779 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 18:38:11,789 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 18:38:12,069 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 22 treesize of output 10 [2023-12-02 18:38:12,074 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 9 treesize of output 3 [2023-12-02 18:38:12,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:38:12,997 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 62 treesize of output 57 [2023-12-02 18:38:13,009 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 30 treesize of output 13 [2023-12-02 18:38:13,187 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 31 treesize of output 13 [2023-12-02 18:38:13,192 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 9 treesize of output 3 [2023-12-02 18:38:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 18:38:13,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:38:14,140 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3736 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3736 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3737 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3737) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:38:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974485018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:38:14,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:38:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27, 27, 13] total 64 [2023-12-02 18:38:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345524542] [2023-12-02 18:38:14,146 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:38:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-02 18:38:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:38:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-02 18:38:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3528, Unknown=1, NotChecked=128, Total=4422 [2023-12-02 18:38:14,150 INFO L87 Difference]: Start difference. First operand 1645 states and 2266 transitions. Second operand has 64 states, 60 states have (on average 3.033333333333333) internal successors, (182), 61 states have internal predecessors, (182), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:39:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:05,429 INFO L93 Difference]: Finished difference Result 2102 states and 2912 transitions. [2023-12-02 18:39:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-02 18:39:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 60 states have (on average 3.033333333333333) internal successors, (182), 61 states have internal predecessors, (182), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 98 [2023-12-02 18:39:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:05,432 INFO L225 Difference]: With dead ends: 2102 [2023-12-02 18:39:05,432 INFO L226 Difference]: Without dead ends: 2098 [2023-12-02 18:39:05,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4790 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=3579, Invalid=17304, Unknown=1, NotChecked=286, Total=21170 [2023-12-02 18:39:05,438 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 972 mSDsluCounter, 17608 mSDsCounter, 0 mSdLazyCounter, 20538 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 18188 SdHoareTripleChecker+Invalid, 20635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 20538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:05,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 18188 Invalid, 20635 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [97 Valid, 20538 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2023-12-02 18:39:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2023-12-02 18:39:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1712. [2023-12-02 18:39:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1177 states have (on average 1.9379779099405268) internal successors, (2281), 1668 states have internal predecessors, (2281), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:39:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2356 transitions. [2023-12-02 18:39:05,455 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2356 transitions. Word has length 98 [2023-12-02 18:39:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:05,455 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2356 transitions. [2023-12-02 18:39:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 60 states have (on average 3.033333333333333) internal successors, (182), 61 states have internal predecessors, (182), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:39:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2356 transitions. [2023-12-02 18:39:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 18:39:05,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:05,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:05,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2023-12-02 18:39:05,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (33)] Ended with exit code 0 [2023-12-02 18:39:05,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 18:39:06,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:06,057 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:39:06,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2025310281, now seen corresponding path program 1 times [2023-12-02 18:39:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:39:06,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877164166] [2023-12-02 18:39:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:06,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:39:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:39:06,059 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:39:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (36)] Waiting until timeout for monitored process [2023-12-02 18:39:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:06,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 18:39:06,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:06,953 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 18:39:07,076 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:39:07,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:39:07,111 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 18:39:07,214 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 24 treesize of output 12 [2023-12-02 18:39:08,326 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:08,327 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 18:39:08,443 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:08,443 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 18:39:08,455 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 18:39:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:08,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:08,562 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4177 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4177) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 18:39:11,075 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4177 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4223))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4177)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:39:11,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:39:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877164166] [2023-12-02 18:39:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877164166] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [724027142] [2023-12-02 18:39:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:11,079 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:39:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:39:11,080 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:39:11,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-12-02 18:39:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:16,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-02 18:39:16,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:16,275 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 18:39:16,523 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:39:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:39:16,603 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 18:39:16,754 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 20 treesize of output 12 [2023-12-02 18:39:17,765 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:39:17,765 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 36 treesize of output 35 [2023-12-02 18:39:17,949 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:39:17,949 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 36 treesize of output 35 [2023-12-02 18:39:17,962 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 27 treesize of output 15 [2023-12-02 18:39:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:17,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:17,988 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4663) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 18:39:17,998 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-12-02 18:39:18,499 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4709 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4709))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4663)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:39:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [724027142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519077585] [2023-12-02 18:39:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:18,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:18,502 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:18,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 18:39:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:19,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:39:19,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:19,235 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:39:19,235 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 18:39:19,276 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 18:39:20,124 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:20,124 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 18:39:22,291 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:22,291 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 18:39:22,302 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 18:39:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:22,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:22,322 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5147) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:39:22,333 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:39:22,773 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-12-02 18:39:22,773 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 37 treesize of output 36 [2023-12-02 18:39:22,782 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5193 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5147 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5193))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5147)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem73#1.base|)) is different from false [2023-12-02 18:39:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519077585] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:22,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 30 [2023-12-02 18:39:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352628088] [2023-12-02 18:39:22,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 18:39:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:39:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 18:39:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=921, Unknown=11, NotChecked=552, Total=1640 [2023-12-02 18:39:22,787 INFO L87 Difference]: Start difference. First operand 1712 states and 2356 transitions. Second operand has 31 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:39:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:39:40,100 INFO L93 Difference]: Finished difference Result 2095 states and 2862 transitions. [2023-12-02 18:39:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 18:39:40,101 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 122 [2023-12-02 18:39:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:39:40,103 INFO L225 Difference]: With dead ends: 2095 [2023-12-02 18:39:40,104 INFO L226 Difference]: Without dead ends: 2095 [2023-12-02 18:39:40,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=256, Invalid=1657, Unknown=11, NotChecked=728, Total=2652 [2023-12-02 18:39:40,105 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 762 mSDsluCounter, 7629 mSDsCounter, 0 mSdLazyCounter, 9525 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 8187 SdHoareTripleChecker+Invalid, 9577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 9525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:39:40,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 8187 Invalid, 9577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 9525 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2023-12-02 18:39:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2023-12-02 18:39:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1709. [2023-12-02 18:39:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1177 states have (on average 1.9328802039082413) internal successors, (2275), 1665 states have internal predecessors, (2275), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:39:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2350 transitions. [2023-12-02 18:39:40,127 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2350 transitions. Word has length 122 [2023-12-02 18:39:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:39:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2350 transitions. [2023-12-02 18:39:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:39:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2350 transitions. [2023-12-02 18:39:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 18:39:40,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:39:40,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:39:40,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 18:39:40,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2023-12-02 18:39:40,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (36)] Ended with exit code 0 [2023-12-02 18:39:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:39:40,729 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:39:40,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:39:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2025310280, now seen corresponding path program 1 times [2023-12-02 18:39:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:39:40,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348605132] [2023-12-02 18:39:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:40,730 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 18:39:40,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:39:40,731 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:39:40,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (39)] Waiting until timeout for monitored process [2023-12-02 18:39:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:41,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-02 18:39:41,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:41,701 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 18:39:41,955 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 18:39:41,998 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:39:41,998 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 18:39:42,037 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 18:39:42,049 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 18:39:42,157 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 18:39:42,161 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 18:39:43,095 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:39:43,096 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 18:39:43,106 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 18:39:43,237 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:39:43,238 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 18:39:43,248 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 18:39:43,266 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 18:39:43,273 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 18:39:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:43,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:43,498 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5679) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:39:43,532 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5679 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5679) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:39:44,970 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5771 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5772 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5772) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5771) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5679 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5771 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5772 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5771))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5772) .cse2 v_ArrVal_5680) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5679) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:39:44,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:39:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348605132] [2023-12-02 18:39:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348605132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689563140] [2023-12-02 18:39:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:44,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:39:44,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:39:44,983 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:39:44,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-02 18:39:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:49,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-02 18:39:49,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:49,128 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 18:39:49,135 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 18:39:49,792 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:39:49,793 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 18:39:49,799 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 12 treesize of output 14 [2023-12-02 18:39:49,886 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 15 treesize of output 1 [2023-12-02 18:39:49,890 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 18:39:49,989 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 17 treesize of output 9 [2023-12-02 18:39:50,065 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 7 treesize of output 3 [2023-12-02 18:39:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:39:51,033 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 16 treesize of output 11 [2023-12-02 18:39:51,290 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2023-12-02 18:39:51,297 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 35 treesize of output 11 [2023-12-02 18:39:51,451 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 17 treesize of output 9 [2023-12-02 18:39:51,455 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 7 treesize of output 3 [2023-12-02 18:39:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:51,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:51,957 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 231 treesize of output 159 [2023-12-02 18:39:54,846 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_arrayElimCell_71 (_ BitVec 32)) (v_ArrVal_6264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6264))) (let ((.cse1 (select |c_#length| v_arrayElimCell_71)) (.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (not (bvule (bvadd .cse0 (_ bv20 32)) .cse1)) (forall ((v_ArrVal_6217 (_ BitVec 32))) (let ((.cse2 (bvadd (_ bv8 32) (select (select (store .cse3 v_arrayElimCell_71 (store (select .cse3 v_arrayElimCell_71) (bvadd (_ bv16 32) .cse0) v_ArrVal_6217)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))) (or (forall ((v_ArrVal_6218 (_ BitVec 32))) (bvule .cse2 (select |c_#length| v_ArrVal_6218))) (bvule .cse2 .cse1)))))))) (forall ((v_arrayElimCell_71 (_ BitVec 32)) (v_ArrVal_6264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6264))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (not (bvule (bvadd .cse5 (_ bv20 32)) (select |c_#length| v_arrayElimCell_71))) (forall ((v_prenex_5 (_ BitVec 32))) (let ((.cse6 (select (select (store .cse7 v_arrayElimCell_71 (store (select .cse7 v_arrayElimCell_71) (bvadd (_ bv16 32) .cse5) v_prenex_5)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) .cse6) (bvadd (_ bv8 32) .cse6)))))))) (forall ((v_arrayElimCell_71 (_ BitVec 32)) (v_ArrVal_6264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6264))) (let ((.cse8 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (.cse9 (select |c_#length| v_arrayElimCell_71))) (or (= |c_ULTIMATE.start_main_~user~0#1.base| v_arrayElimCell_71) (not (bvule (bvadd .cse8 (_ bv20 32)) .cse9)) (forall ((v_ArrVal_6217 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store .cse10 v_arrayElimCell_71 (store (select .cse10 v_arrayElimCell_71) (bvadd (_ bv16 32) .cse8) v_ArrVal_6217)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) .cse9)))))) (forall ((v_ArrVal_6264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse13 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6264))) (let ((.cse11 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (forall ((v_arrayElimCell_71 (_ BitVec 32)) (v_ArrVal_6217 (_ BitVec 32))) (let ((.cse12 (select |c_#length| v_arrayElimCell_71))) (or (not (bvule (bvadd .cse11 (_ bv20 32)) .cse12)) (bvule (bvadd (_ bv8 32) (select (select (store .cse13 v_arrayElimCell_71 (store (select .cse13 v_arrayElimCell_71) (bvadd (_ bv16 32) .cse11) v_ArrVal_6217)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) .cse12)))) (= |c_ULTIMATE.start_main_~user~0#1.offset| (bvadd (_ bv8 32) .cse11)))))) (forall ((v_ArrVal_6264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6264) |c_ULTIMATE.start_main_~user~0#1.base|))) (let ((.cse15 (select .cse14 .cse4))) (or (forall ((v_ArrVal_6218 (_ BitVec 32)) (v_ArrVal_6217 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (store .cse14 (bvadd (_ bv16 32) .cse15) v_ArrVal_6217) .cse4)) (select |c_#length| v_ArrVal_6218))) (not (bvule (bvadd .cse15 (_ bv20 32)) (select |c_#length| |c_ULTIMATE.start_main_~user~0#1.base|))) (not (= |c_ULTIMATE.start_main_~user~0#1.offset| (bvadd (_ bv8 32) .cse15))))))))) is different from false [2023-12-02 18:39:55,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689563140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59914999] [2023-12-02 18:39:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:39:55,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:39:55,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:39:55,024 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:39:55,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 18:39:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:39:55,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-02 18:39:55,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:39:55,699 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 18:39:55,919 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 18:39:55,938 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:39:55,938 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 18:39:56,063 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 18:39:56,068 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 18:39:56,368 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 22 treesize of output 10 [2023-12-02 18:39:56,372 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 9 treesize of output 3 [2023-12-02 18:39:57,178 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:57,178 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 62 treesize of output 57 [2023-12-02 18:39:57,184 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 30 treesize of output 13 [2023-12-02 18:39:57,553 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:39:57,554 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 62 treesize of output 57 [2023-12-02 18:39:57,571 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 30 treesize of output 13 [2023-12-02 18:39:57,589 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 31 treesize of output 13 [2023-12-02 18:39:57,596 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 9 treesize of output 3 [2023-12-02 18:39:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:39:57,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:39:57,650 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6750 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6750) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-12-02 18:39:57,690 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6750 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_6750) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-12-02 18:39:59,045 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6843 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6750 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6842))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6843) .cse0 v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6750) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6843 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6751 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6843) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6751) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 18:39:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59914999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:39:59,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:39:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 34 [2023-12-02 18:39:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057722293] [2023-12-02 18:39:59,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:39:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 18:39:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:39:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 18:39:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1355, Unknown=7, NotChecked=560, Total=2070 [2023-12-02 18:39:59,056 INFO L87 Difference]: Start difference. First operand 1709 states and 2350 transitions. Second operand has 35 states, 29 states have (on average 6.931034482758621) internal successors, (201), 28 states have internal predecessors, (201), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:40:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:40:39,803 INFO L93 Difference]: Finished difference Result 2611 states and 3575 transitions. [2023-12-02 18:40:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:40:39,804 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 6.931034482758621) internal successors, (201), 28 states have internal predecessors, (201), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 122 [2023-12-02 18:40:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:40:39,807 INFO L225 Difference]: With dead ends: 2611 [2023-12-02 18:40:39,807 INFO L226 Difference]: Without dead ends: 2611 [2023-12-02 18:40:39,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 334 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=248, Invalid=1935, Unknown=7, NotChecked=672, Total=2862 [2023-12-02 18:40:39,808 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1634 mSDsluCounter, 7182 mSDsCounter, 0 mSdLazyCounter, 18329 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 7854 SdHoareTripleChecker+Invalid, 18390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 18329 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:40:39,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 7854 Invalid, 18390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 18329 Invalid, 4 Unknown, 0 Unchecked, 39.6s Time] [2023-12-02 18:40:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-12-02 18:40:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1708. [2023-12-02 18:40:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1177 states have (on average 1.9311809685641461) internal successors, (2273), 1664 states have internal predecessors, (2273), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:40:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2348 transitions. [2023-12-02 18:40:39,826 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2348 transitions. Word has length 122 [2023-12-02 18:40:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:40:39,826 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2348 transitions. [2023-12-02 18:40:39,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 6.931034482758621) internal successors, (201), 28 states have internal predecessors, (201), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 18:40:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2348 transitions. [2023-12-02 18:40:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:40:39,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:40:39,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:40:39,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 18:40:40,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2023-12-02 18:40:40,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (39)] Ended with exit code 0 [2023-12-02 18:40:40,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:40:40,428 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:40:40,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:40:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash -701347231, now seen corresponding path program 1 times [2023-12-02 18:40:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:40:40,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004620903] [2023-12-02 18:40:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:40,429 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 18:40:40,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:40:40,430 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:40:40,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (42)] Waiting until timeout for monitored process [2023-12-02 18:40:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:41,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 18:40:41,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:41,495 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 18:40:41,620 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:40:41,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:40:41,649 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 18:40:41,759 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 24 treesize of output 12 [2023-12-02 18:40:42,919 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:42,920 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 18:40:43,047 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:43,047 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 18:40:43,151 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:43,151 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 18:40:43,169 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 18:40:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:40:43,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:43,295 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7299 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7299) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:40:43,306 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7299 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7299) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:40:43,321 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7299 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7298))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7299)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:40:43,334 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7299 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7298))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7299)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:40:43,739 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7345 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7345))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7298)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7299)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:40:43,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:40:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004620903] [2023-12-02 18:40:43,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004620903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [644733870] [2023-12-02 18:40:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:43,743 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:40:43,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:40:43,744 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:40:43,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2023-12-02 18:40:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:50,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-02 18:40:50,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:50,117 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 18:40:50,395 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:40:50,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:40:50,458 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 18:40:50,617 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 20 treesize of output 12 [2023-12-02 18:40:51,640 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:40:51,641 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 36 treesize of output 35 [2023-12-02 18:40:51,815 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:40:51,815 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 36 treesize of output 35 [2023-12-02 18:40:51,920 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:40:51,920 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 36 treesize of output 35 [2023-12-02 18:40:51,931 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 27 treesize of output 15 [2023-12-02 18:40:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:40:51,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:54,036 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7801 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7801) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:40:54,051 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7800 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7800))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7801)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:40:54,065 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7800 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7800))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7801)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:40:54,511 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7847 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7800 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7847))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7800)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7801)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:40:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [644733870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:54,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61516549] [2023-12-02 18:40:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:40:54,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:40:54,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:40:54,515 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:40:54,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 18:40:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:40:55,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 18:40:55,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:40:55,386 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:40:55,387 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 18:40:55,436 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 18:40:56,144 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:56,144 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 31 treesize of output 32 [2023-12-02 18:40:56,226 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:56,227 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 31 treesize of output 32 [2023-12-02 18:40:56,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:40:56,313 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 18:40:56,383 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 18:40:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:40:56,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:40:56,404 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:40:56,404 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 18:40:56,411 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8301 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem75#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8301) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2023-12-02 18:40:56,419 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8301 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8301) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 18:40:56,430 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8301 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8300 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8300)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8301) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2023-12-02 18:40:56,441 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8301 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8300 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8300))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8301) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:40:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61516549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:40:57,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:40:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 32 [2023-12-02 18:40:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270177455] [2023-12-02 18:40:57,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:40:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 18:40:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:40:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 18:40:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1089, Unknown=35, NotChecked=1040, Total=2352 [2023-12-02 18:40:57,013 INFO L87 Difference]: Start difference. First operand 1708 states and 2348 transitions. Second operand has 33 states, 27 states have (on average 5.888888888888889) internal successors, (159), 28 states have internal predecessors, (159), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:41:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:41:10,967 INFO L93 Difference]: Finished difference Result 2093 states and 2858 transitions. [2023-12-02 18:41:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 18:41:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 5.888888888888889) internal successors, (159), 28 states have internal predecessors, (159), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 124 [2023-12-02 18:41:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:41:10,971 INFO L225 Difference]: With dead ends: 2093 [2023-12-02 18:41:10,971 INFO L226 Difference]: Without dead ends: 2093 [2023-12-02 18:41:10,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 344 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=269, Invalid=1722, Unknown=41, NotChecked=1274, Total=3306 [2023-12-02 18:41:10,973 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1389 mSDsluCounter, 6341 mSDsCounter, 0 mSdLazyCounter, 7854 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 6898 SdHoareTripleChecker+Invalid, 7907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 7854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:41:10,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 6898 Invalid, 7907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 7854 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 18:41:10,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2023-12-02 18:41:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1707. [2023-12-02 18:41:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1177 states have (on average 1.929481733220051) internal successors, (2271), 1663 states have internal predecessors, (2271), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:41:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2346 transitions. [2023-12-02 18:41:10,989 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2346 transitions. Word has length 124 [2023-12-02 18:41:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:41:10,989 INFO L495 AbstractCegarLoop]: Abstraction has 1707 states and 2346 transitions. [2023-12-02 18:41:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 5.888888888888889) internal successors, (159), 28 states have internal predecessors, (159), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:41:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2346 transitions. [2023-12-02 18:41:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:41:10,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:41:10,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:41:11,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 18:41:11,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2023-12-02 18:41:11,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (42)] Forceful destruction successful, exit code 0 [2023-12-02 18:41:11,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:41:11,591 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:41:11,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:41:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash -701347230, now seen corresponding path program 1 times [2023-12-02 18:41:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:41:11,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015523935] [2023-12-02 18:41:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:11,593 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 18:41:11,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:41:11,594 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:41:11,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (45)] Waiting until timeout for monitored process [2023-12-02 18:41:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:41:12,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-02 18:41:12,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:41:12,793 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 18:41:12,913 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 18:41:12,956 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:41:12,956 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 18:41:12,989 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 18:41:13,001 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 18:41:13,107 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 22 treesize of output 10 [2023-12-02 18:41:13,112 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 9 treesize of output 3 [2023-12-02 18:41:14,078 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:41:14,079 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 62 treesize of output 57 [2023-12-02 18:41:14,090 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 30 treesize of output 13 [2023-12-02 18:41:14,233 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:41:14,233 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 62 treesize of output 57 [2023-12-02 18:41:14,244 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 30 treesize of output 13 [2023-12-02 18:41:14,343 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:41:14,344 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 62 treesize of output 57 [2023-12-02 18:41:14,356 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 30 treesize of output 13 [2023-12-02 18:41:14,367 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 31 treesize of output 13 [2023-12-02 18:41:14,373 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 9 treesize of output 3 [2023-12-02 18:41:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:41:14,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:41:14,609 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8851) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 18:41:14,651 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8851) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 18:41:14,740 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8849))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8848) .cse0 v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8851) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8848) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8849) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 18:41:14,848 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8848) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8849) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8849))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8848) .cse3 v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8851) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-12-02 18:41:17,816 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8943 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8942 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8943))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8849))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8942) .cse0 v_ArrVal_8848) .cse1 v_ArrVal_8850) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8851) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8848 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8943 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8942 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8850 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8943))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8942) .cse6 v_ArrVal_8848) (select (select (store .cse7 .cse6 v_ArrVal_8849) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8850))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2023-12-02 18:41:17,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:41:17,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015523935] [2023-12-02 18:41:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015523935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:41:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2019671158] [2023-12-02 18:41:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:41:17,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:41:17,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:41:17,829 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:41:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2023-12-02 18:43:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:07,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-02 18:43:07,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:43:07,860 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 18:43:08,414 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 18:43:08,456 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:43:08,456 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 18:43:08,555 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 18:43:08,574 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 18:43:08,869 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 18:43:08,875 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 18:43:10,231 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:43:10,231 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 18:43:10,239 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 18:43:10,558 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:43:10,558 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 18:43:10,575 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 18:43:10,761 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:43:10,761 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 18:43:10,778 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 18:43:10,798 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 18:43:10,808 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 18:43:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:43:10,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:43:10,879 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 18:43:10,918 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:43:11,001 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9445) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9444) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_9447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9444))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9445) .cse2 v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_9447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:43:11,055 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9444))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9445) .cse1 v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9445) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9444) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 18:43:13,702 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9539 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9538))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9539) .cse1 v_ArrVal_9445) (select (select (store .cse2 .cse1 v_ArrVal_9444) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9446))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9539 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9538 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9538))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_9444))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9539) .cse4 v_ArrVal_9445) .cse5 v_ArrVal_9446) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_9447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 18:43:13,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2019671158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:43:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000864850] [2023-12-02 18:43:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:13,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:43:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:43:13,719 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:43:13,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-02 18:43:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:14,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 123 conjunts are in the unsatisfiable core [2023-12-02 18:43:14,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:43:14,731 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 18:43:14,773 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:43:14,774 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 18:43:14,807 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 18:43:14,815 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 18:43:14,896 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 22 treesize of output 10 [2023-12-02 18:43:14,903 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 9 treesize of output 3 [2023-12-02 18:43:16,290 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:43:16,290 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 62 treesize of output 57 [2023-12-02 18:43:16,310 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 30 treesize of output 13 [2023-12-02 18:43:16,430 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:43:16,430 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 62 treesize of output 57 [2023-12-02 18:43:16,447 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 30 treesize of output 13 [2023-12-02 18:43:16,514 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:43:16,515 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 62 treesize of output 57 [2023-12-02 18:43:16,533 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 30 treesize of output 13 [2023-12-02 18:43:16,549 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 31 treesize of output 13 [2023-12-02 18:43:16,561 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 9 treesize of output 3 [2023-12-02 18:43:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:43:16,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:43:16,632 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10042 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 18:43:16,671 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10042 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:43:16,716 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10039))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10040) .cse0 v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10040) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 18:43:16,769 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10039))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10040) .cse1 v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10040) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 18:43:18,422 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10133))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_10039))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10134) .cse0 v_ArrVal_10040) .cse1 v_ArrVal_10041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_10041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10133))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10134) .cse6 v_ArrVal_10040) (select (select (store .cse7 .cse6 v_ArrVal_10039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10041))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-12-02 18:43:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000864850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:43:18,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:43:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2023-12-02 18:43:18,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742159992] [2023-12-02 18:43:18,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:43:18,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 18:43:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:43:18,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 18:43:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=492, Unknown=15, NotChecked=870, Total=1482 [2023-12-02 18:43:18,438 INFO L87 Difference]: Start difference. First operand 1707 states and 2346 transitions. Second operand has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 18:44:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:00,974 INFO L93 Difference]: Finished difference Result 2609 states and 3571 transitions. [2023-12-02 18:44:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:44:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 124 [2023-12-02 18:44:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:00,978 INFO L225 Difference]: With dead ends: 2609 [2023-12-02 18:44:00,978 INFO L226 Difference]: Without dead ends: 2609 [2023-12-02 18:44:00,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 351 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=178, Invalid=923, Unknown=15, NotChecked=1140, Total=2256 [2023-12-02 18:44:00,979 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1180 mSDsluCounter, 5361 mSDsCounter, 0 mSdLazyCounter, 12472 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 12502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 12472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:00,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 6155 Invalid, 12502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 12472 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2023-12-02 18:44:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2023-12-02 18:44:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1706. [2023-12-02 18:44:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1177 states have (on average 1.927782497875956) internal successors, (2269), 1662 states have internal predecessors, (2269), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:44:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2344 transitions. [2023-12-02 18:44:00,997 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2344 transitions. Word has length 124 [2023-12-02 18:44:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:00,997 INFO L495 AbstractCegarLoop]: Abstraction has 1706 states and 2344 transitions. [2023-12-02 18:44:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 18:44:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2344 transitions. [2023-12-02 18:44:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 18:44:00,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:00,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:44:01,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-02 18:44:01,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2023-12-02 18:44:01,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (45)] Forceful destruction successful, exit code 0 [2023-12-02 18:44:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:44:01,599 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:44:01,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 316818661, now seen corresponding path program 1 times [2023-12-02 18:44:01,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:44:01,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121203936] [2023-12-02 18:44:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:01,600 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 18:44:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:44:01,601 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:44:01,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (48)] Waiting until timeout for monitored process [2023-12-02 18:44:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:02,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-02 18:44:02,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:02,826 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 18:44:03,155 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:44:03,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:44:03,226 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 18:44:03,386 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 24 treesize of output 12 [2023-12-02 18:44:05,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:05,260 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 18:44:05,480 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:05,480 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 18:44:05,635 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:05,636 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 18:44:05,794 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:05,795 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 18:44:05,822 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 18:44:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:44:05,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:44:08,192 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_10606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-12-02 18:44:08,214 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10605))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10606)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:08,235 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10605))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10606)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:08,261 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10604 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10604))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10605)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10606)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:08,288 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10604 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10604))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10605)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10606)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:44:08,913 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10604 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10652))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10604)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10605)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10606)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:44:08,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:44:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121203936] [2023-12-02 18:44:08,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121203936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:08,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1320393916] [2023-12-02 18:44:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:44:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:44:08,921 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:44:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2023-12-02 18:44:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:19,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-02 18:44:19,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:19,078 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 18:44:19,749 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:44:19,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:44:19,903 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 18:44:20,253 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 20 treesize of output 12 [2023-12-02 18:44:22,084 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:44:22,084 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 36 treesize of output 35 [2023-12-02 18:44:22,389 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:44:22,389 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 36 treesize of output 35 [2023-12-02 18:44:22,595 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:44:22,596 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 36 treesize of output 35 [2023-12-02 18:44:22,804 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:44:22,804 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 36 treesize of output 35 [2023-12-02 18:44:22,835 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 27 treesize of output 15 [2023-12-02 18:44:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:44:22,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:44:22,876 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_11124) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2023-12-02 18:44:25,054 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_11123))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11124)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:44:25,076 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11123))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11124)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:25,102 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11122 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_11122))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11123)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11124)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:44:25,132 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11122 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11122))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11123)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11124)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:25,793 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11122 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11170 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_11170))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11122)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11123)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_11124)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:44:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1320393916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253323513] [2023-12-02 18:44:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:25,801 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:25,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-02 18:44:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:26,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 18:44:26,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:27,010 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:44:27,010 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 18:44:27,126 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 18:44:28,517 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:28,517 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 31 treesize of output 32 [2023-12-02 18:44:28,714 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:28,714 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 31 treesize of output 32 [2023-12-02 18:44:28,885 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:28,885 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 31 treesize of output 32 [2023-12-02 18:44:29,091 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:44:29,091 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 18:44:31,261 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 18:44:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:44:31,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:44:31,312 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:44:31,312 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 18:44:31,626 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 18:44:31,646 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11639 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_11639)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2023-12-02 18:44:31,665 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11639 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11639))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:44:31,691 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11638 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_11638))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11639)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:44:31,727 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11638 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11638))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11639)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:44:32,419 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11640 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_11638 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_11686))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11638)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_11639)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_11640) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:44:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253323513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:32,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:44:32,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 35 [2023-12-02 18:44:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481920397] [2023-12-02 18:44:32,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:44:32,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 18:44:32,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:44:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 18:44:32,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1357, Unknown=42, NotChecked=1674, Total=3306 [2023-12-02 18:44:32,427 INFO L87 Difference]: Start difference. First operand 1706 states and 2344 transitions. Second operand has 36 states, 30 states have (on average 5.5) internal successors, (165), 31 states have internal predecessors, (165), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:44:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:58,644 INFO L93 Difference]: Finished difference Result 2091 states and 2854 transitions. [2023-12-02 18:44:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 18:44:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 30 states have (on average 5.5) internal successors, (165), 31 states have internal predecessors, (165), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 126 [2023-12-02 18:44:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:58,648 INFO L225 Difference]: With dead ends: 2091 [2023-12-02 18:44:58,649 INFO L226 Difference]: Without dead ends: 2091 [2023-12-02 18:44:58,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=315, Invalid=2066, Unknown=43, NotChecked=1998, Total=4422 [2023-12-02 18:44:58,651 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1387 mSDsluCounter, 5996 mSDsCounter, 0 mSdLazyCounter, 7482 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 6552 SdHoareTripleChecker+Invalid, 7534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:58,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 6552 Invalid, 7534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 7482 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2023-12-02 18:44:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2023-12-02 18:44:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1705. [2023-12-02 18:44:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1177 states have (on average 1.9260832625318607) internal successors, (2267), 1661 states have internal predecessors, (2267), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2023-12-02 18:44:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2342 transitions. [2023-12-02 18:44:58,675 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2342 transitions. Word has length 126 [2023-12-02 18:44:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:58,676 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 2342 transitions. [2023-12-02 18:44:58,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 30 states have (on average 5.5) internal successors, (165), 31 states have internal predecessors, (165), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 18:44:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2342 transitions. [2023-12-02 18:44:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 18:44:58,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:58,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:44:58,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (48)] Ended with exit code 0 [2023-12-02 18:44:58,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2023-12-02 18:44:59,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-02 18:44:59,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:59,290 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 628 more)] === [2023-12-02 18:44:59,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash 316818662, now seen corresponding path program 1 times [2023-12-02 18:44:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:44:59,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466360989] [2023-12-02 18:44:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:59,292 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 18:44:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:44:59,292 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 18:44:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/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 (51)] Waiting until timeout for monitored process [2023-12-02 18:45:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:00,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 129 conjunts are in the unsatisfiable core [2023-12-02 18:45:00,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:00,683 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 18:45:01,281 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 18:45:01,341 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:45:01,341 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 18:45:01,413 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 18:45:01,433 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 18:45:01,632 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 18:45:01,639 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 18:45:03,320 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:45:03,321 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 18:45:03,339 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 18:45:03,563 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:45:03,564 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 18:45:03,582 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 18:45:03,753 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:45:03,753 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 18:45:03,761 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 18:45:03,946 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:45:03,947 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 18:45:03,960 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 18:45:03,991 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 18:45:03,999 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 18:45:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-02 18:45:04,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:45:04,364 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:45:04,407 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:45:04,455 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12205) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12204) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12204))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_12205) .cse2 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:45:04,504 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_12204))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_12205) .cse1 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_12205) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_12204) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-12-02 18:45:05,557 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_12203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12203))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12202) .cse1 v_ArrVal_12205) (select (select (store .cse2 .cse1 v_ArrVal_12204) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_12206))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_12203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12203))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_12204))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_12202) .cse4 v_ArrVal_12205) .cse5 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 18:45:19,807 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_12298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12207 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12299))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_12203))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_12204))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12298) .cse0 v_ArrVal_12202) .cse1 v_ArrVal_12205) .cse2 v_ArrVal_12206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_12207) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_12298 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12205 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_12206 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12299))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_12203))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_12298) .cse8 v_ArrVal_12202) .cse9 v_ArrVal_12205) (select (select (store .cse10 .cse9 v_ArrVal_12204) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_12206))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2023-12-02 18:45:19,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:45:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466360989] [2023-12-02 18:45:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466360989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699975329] [2023-12-02 18:45:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:45:19,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:45:19,834 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:45:19,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86186796-6e9f-49fa-9e82-7ef6ed47073c/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process