./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:38:16,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:38:16,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 13:38:16,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:38:16,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:38:16,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:38:16,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:38:16,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:38:16,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:38:16,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:38:16,684 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:38:16,685 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:38:16,685 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:38:16,686 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:38:16,686 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:38:16,687 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:38:16,687 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:38:16,688 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:38:16,689 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:38:16,689 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:38:16,690 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:38:16,692 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:38:16,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:38:16,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:38:16,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:38:16,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:38:16,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:38:16,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:38:16,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:38:16,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:38:16,697 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:38:16,697 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:38:16,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:38:16,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:38:16,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:38:16,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:38:16,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:38:16,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:38:16,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:38:16,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:38:16,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:38:16,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:38:16,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:38:16,700 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:38:16,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:38:16,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:38:16,701 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:38:16,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:38:16,701 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_d08aefed-6637-41c9-a3bd-56b9083ad71d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2023-12-02 13:38:16,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:38:16,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:38:17,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:38:17,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:38:17,003 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:38:17,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2023-12-02 13:38:20,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:38:20,730 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:38:20,730 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2023-12-02 13:38:20,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/5b7e874df/25553adde5764e7fbd3968a80ae52d37/FLAGf3aa0b63a [2023-12-02 13:38:20,768 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/5b7e874df/25553adde5764e7fbd3968a80ae52d37 [2023-12-02 13:38:20,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:38:20,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:38:20,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:20,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:38:20,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:38:20,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:20" (1/1) ... [2023-12-02 13:38:20,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651107bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:20, skipping insertion in model container [2023-12-02 13:38:20,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:20" (1/1) ... [2023-12-02 13:38:20,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:38:21,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:21,444 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 13:38:21,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d658561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:21, skipping insertion in model container [2023-12-02 13:38:21,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:21,446 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:38:21,448 INFO L158 Benchmark]: Toolchain (without parser) took 673.94ms. Allocated memory is still 188.7MB. Free memory was 150.7MB in the beginning and 149.8MB in the end (delta: 888.7kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 13:38:21,448 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:38:21,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.91ms. Allocated memory is still 188.7MB. Free memory was 149.6MB in the beginning and 149.8MB in the end (delta: -136.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 13:38:21,450 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 119.5MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 670.91ms. Allocated memory is still 188.7MB. Free memory was 149.6MB in the beginning and 149.8MB in the end (delta: -136.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:38:23,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:38:23,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 13:38:23,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:38:23,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:38:23,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:38:23,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:38:23,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:38:23,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:38:23,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:38:23,646 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:38:23,647 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:38:23,647 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:38:23,648 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:38:23,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:38:23,649 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:38:23,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:38:23,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:38:23,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:38:23,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:38:23,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:38:23,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:38:23,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:38:23,654 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:38:23,655 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:38:23,655 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:38:23,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:38:23,657 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:38:23,657 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:38:23,658 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:38:23,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:38:23,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:38:23,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:38:23,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:38:23,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:38:23,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:38:23,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:38:23,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:38:23,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:38:23,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:38:23,663 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:38:23,664 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:38:23,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:38:23,664 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:38:23,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:38:23,665 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_d08aefed-6637-41c9-a3bd-56b9083ad71d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2023-12-02 13:38:24,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:38:24,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:38:24,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:38:24,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:38:24,048 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:38:24,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2023-12-02 13:38:27,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:38:27,716 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:38:27,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2023-12-02 13:38:27,739 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/601fa6eaa/b6a1cd23fb024f4e9f9197b1e2e8f8a8/FLAG1465d8b21 [2023-12-02 13:38:27,754 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/data/601fa6eaa/b6a1cd23fb024f4e9f9197b1e2e8f8a8 [2023-12-02 13:38:27,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:38:27,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:38:27,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:27,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:38:27,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:38:27,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:27" (1/1) ... [2023-12-02 13:38:27,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f72bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:27, skipping insertion in model container [2023-12-02 13:38:27,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:27" (1/1) ... [2023-12-02 13:38:27,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:38:28,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:28,386 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:38:28,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:38:28,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:28,503 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:38:28,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:28,624 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:38:28,634 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:38:28,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28 WrapperNode [2023-12-02 13:38:28,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:28,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:38:28,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:38:28,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:38:28,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,768 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1017 [2023-12-02 13:38:28,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:38:28,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:38:28,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:38:28,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:38:28,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:38:28,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:38:28,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:38:28,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:38:28,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (1/1) ... [2023-12-02 13:38:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:38:28,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:28,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:38:28,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:38:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 13:38:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 13:38:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 13:38:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:38:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:38:28,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:38:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:38:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:38:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:38:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:38:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:38:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:38:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:38:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:38:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:38:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:38:29,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:38:29,235 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:38:29,238 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:38:29,270 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 13:38:34,498 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:38:34,673 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:38:34,673 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 13:38:34,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34 BoogieIcfgContainer [2023-12-02 13:38:34,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:38:34,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:38:34,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:38:34,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:38:34,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:38:27" (1/3) ... [2023-12-02 13:38:34,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8dd7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2023-12-02 13:38:34,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:28" (2/3) ... [2023-12-02 13:38:34,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8dd7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2023-12-02 13:38:34,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34" (3/3) ... [2023-12-02 13:38:34,684 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2023-12-02 13:38:34,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:38:34,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 529 error locations. [2023-12-02 13:38:34,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:38:34,774 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;@70b341d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:38:34,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2023-12-02 13:38:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:38:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:38:34,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:34,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:38:34,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:34,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash 53652, now seen corresponding path program 1 times [2023-12-02 13:38:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170462541] [2023-12-02 13:38:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:34,807 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 13:38:34,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:34,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:34,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:34,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:38:34,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:35,055 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 13:38:35,070 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 13:38:35,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:35,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:35,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170462541] [2023-12-02 13:38:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170462541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:38:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597249612] [2023-12-02 13:38:35,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:35,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:35,123 INFO L87 Difference]: Start difference. First operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 13:38:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:37,255 INFO L93 Difference]: Finished difference Result 950 states and 1005 transitions. [2023-12-02 13:38:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:37,258 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 13:38:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:37,281 INFO L225 Difference]: With dead ends: 950 [2023-12-02 13:38:37,281 INFO L226 Difference]: Without dead ends: 949 [2023-12-02 13:38:37,283 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 13:38:37,287 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 881 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:37,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 561 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 13:38:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-02 13:38:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 940. [2023-12-02 13:38:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 424 states have (on average 2.330188679245283) internal successors, (988), 934 states have internal predecessors, (988), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 996 transitions. [2023-12-02 13:38:37,373 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 996 transitions. Word has length 2 [2023-12-02 13:38:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:37,373 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 996 transitions. [2023-12-02 13:38:37,373 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 13:38:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 996 transitions. [2023-12-02 13:38:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:38:37,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:37,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:38:37,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:37,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:37,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash 53653, now seen corresponding path program 1 times [2023-12-02 13:38:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229111227] [2023-12-02 13:38:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:37,579 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 13:38:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:37,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:37,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:37,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:38:37,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:37,703 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 13:38:37,716 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 13:38:37,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:37,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229111227] [2023-12-02 13:38:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229111227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:38:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202563272] [2023-12-02 13:38:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:37,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:37,721 INFO L87 Difference]: Start difference. First operand 940 states and 996 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 13:38:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:41,573 INFO L93 Difference]: Finished difference Result 1296 states and 1383 transitions. [2023-12-02 13:38:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:41,574 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 13:38:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:41,580 INFO L225 Difference]: With dead ends: 1296 [2023-12-02 13:38:41,581 INFO L226 Difference]: Without dead ends: 1296 [2023-12-02 13:38:41,581 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 13:38:41,582 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 385 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1208 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 13:38:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-02 13:38:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1109. [2023-12-02 13:38:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 594 states have (on average 2.3047138047138045) internal successors, (1369), 1103 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2023-12-02 13:38:41,615 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 2 [2023-12-02 13:38:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:41,616 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2023-12-02 13:38:41,616 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 13:38:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2023-12-02 13:38:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:38:41,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:41,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 13:38:41,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:41,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:41,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:41,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1990944098, now seen corresponding path program 1 times [2023-12-02 13:38:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:41,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374852948] [2023-12-02 13:38:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:41,822 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 13:38:41,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:41,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:41,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:41,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:38:41,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:41,972 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 13:38:41,998 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 13:38:42,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:38:42,080 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 13:38:42,106 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:38:42,106 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 13:38:42,131 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 13:38:42,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:42,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374852948] [2023-12-02 13:38:42,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374852948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:38:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86969608] [2023-12-02 13:38:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:38:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:42,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:38:42,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:38:42,135 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 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 13:38:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:45,385 INFO L93 Difference]: Finished difference Result 1112 states and 1382 transitions. [2023-12-02 13:38:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:38:45,386 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 13:38:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:45,392 INFO L225 Difference]: With dead ends: 1112 [2023-12-02 13:38:45,393 INFO L226 Difference]: Without dead ends: 1112 [2023-12-02 13:38:45,393 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 13:38:45,394 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 966 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:45,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 282 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 13:38:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-02 13:38:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 929. [2023-12-02 13:38:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 424 states have (on average 2.30188679245283) internal successors, (976), 923 states have internal predecessors, (976), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 984 transitions. [2023-12-02 13:38:45,417 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 984 transitions. Word has length 6 [2023-12-02 13:38:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:45,417 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 984 transitions. [2023-12-02 13:38:45,418 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 13:38:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 984 transitions. [2023-12-02 13:38:45,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:38:45,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:45,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:45,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:38:45,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:45,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:45,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724911, now seen corresponding path program 1 times [2023-12-02 13:38:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312410022] [2023-12-02 13:38:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:45,624 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 13:38:45,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:45,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:45,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:38:45,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:45,766 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 13:38:45,779 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 13:38:45,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:45,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312410022] [2023-12-02 13:38:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312410022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:38:45,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151746602] [2023-12-02 13:38:45,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:45,782 INFO L87 Difference]: Start difference. First operand 929 states and 984 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 13:38:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:48,300 INFO L93 Difference]: Finished difference Result 1225 states and 1310 transitions. [2023-12-02 13:38:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:48,302 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 13:38:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:48,308 INFO L225 Difference]: With dead ends: 1225 [2023-12-02 13:38:48,308 INFO L226 Difference]: Without dead ends: 1225 [2023-12-02 13:38:48,308 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 13:38:48,309 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 881 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:48,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 971 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 13:38:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-02 13:38:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 882. [2023-12-02 13:38:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 424 states have (on average 2.1910377358490565) internal successors, (929), 876 states have internal predecessors, (929), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 937 transitions. [2023-12-02 13:38:48,331 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 937 transitions. Word has length 7 [2023-12-02 13:38:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:48,331 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 937 transitions. [2023-12-02 13:38:48,331 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 13:38:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 937 transitions. [2023-12-02 13:38:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:38:48,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:48,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:48,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:48,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:48,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:48,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724910, now seen corresponding path program 1 times [2023-12-02 13:38:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:48,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985942448] [2023-12-02 13:38:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:48,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:38:48,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:48,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:48,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:48,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:38:48,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:48,655 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 13:38:48,686 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 13:38:48,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:48,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985942448] [2023-12-02 13:38:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985942448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:48,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:48,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:38:48,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603747638] [2023-12-02 13:38:48,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:48,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:48,690 INFO L87 Difference]: Start difference. First operand 882 states and 937 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 13:38:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:52,106 INFO L93 Difference]: Finished difference Result 1295 states and 1383 transitions. [2023-12-02 13:38:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:52,107 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 13:38:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:52,114 INFO L225 Difference]: With dead ends: 1295 [2023-12-02 13:38:52,114 INFO L226 Difference]: Without dead ends: 1295 [2023-12-02 13:38:52,114 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 13:38:52,115 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 613 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:52,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1272 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 13:38:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-02 13:38:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 895. [2023-12-02 13:38:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 447 states have (on average 2.1834451901565997) internal successors, (976), 889 states have internal predecessors, (976), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 984 transitions. [2023-12-02 13:38:52,135 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 984 transitions. Word has length 7 [2023-12-02 13:38:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:52,135 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 984 transitions. [2023-12-02 13:38:52,135 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 13:38:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 984 transitions. [2023-12-02 13:38:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:38:52,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:52,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:52,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:52,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:52,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:52,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1355457050, now seen corresponding path program 1 times [2023-12-02 13:38:52,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:52,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852885673] [2023-12-02 13:38:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:52,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:38:52,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:52,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:52,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:52,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:38:52,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:52,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:38:52,498 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:38:52,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:38:52,502 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 13:38:52,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:38:52,560 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 13:38:52,572 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 13:38:52,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:52,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852885673] [2023-12-02 13:38:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852885673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:52,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:38:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782590615] [2023-12-02 13:38:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:52,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:38:52,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:38:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:38:52,575 INFO L87 Difference]: Start difference. First operand 895 states and 984 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:38:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:54,437 INFO L93 Difference]: Finished difference Result 1207 states and 1323 transitions. [2023-12-02 13:38:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:38:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 13:38:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:54,443 INFO L225 Difference]: With dead ends: 1207 [2023-12-02 13:38:54,443 INFO L226 Difference]: Without dead ends: 1207 [2023-12-02 13:38:54,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 13:38:54,444 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 330 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:54,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2344 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 13:38:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-12-02 13:38:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 897. [2023-12-02 13:38:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 449 states have (on average 2.178173719376392) internal successors, (978), 891 states have internal predecessors, (978), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 986 transitions. [2023-12-02 13:38:54,463 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 986 transitions. Word has length 11 [2023-12-02 13:38:54,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:54,463 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 986 transitions. [2023-12-02 13:38:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:38:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 986 transitions. [2023-12-02 13:38:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 13:38:54,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:54,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:54,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:54,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:54,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:54,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash -481040215, now seen corresponding path program 1 times [2023-12-02 13:38:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027744055] [2023-12-02 13:38:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:54,665 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 13:38:54,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:54,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:54,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:54,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:38:54,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:54,814 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 13:38:54,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:54,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027744055] [2023-12-02 13:38:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027744055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:38:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696234849] [2023-12-02 13:38:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:54,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:54,816 INFO L87 Difference]: Start difference. First operand 897 states and 986 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 13:38:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:55,549 INFO L93 Difference]: Finished difference Result 858 states and 946 transitions. [2023-12-02 13:38:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:55,551 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 13:38:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:55,555 INFO L225 Difference]: With dead ends: 858 [2023-12-02 13:38:55,555 INFO L226 Difference]: Without dead ends: 858 [2023-12-02 13:38:55,563 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 13:38:55,564 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 70 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:55,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1485 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:38:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-02 13:38:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-12-02 13:38:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 434 states have (on average 2.161290322580645) internal successors, (938), 852 states have internal predecessors, (938), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 946 transitions. [2023-12-02 13:38:55,582 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 946 transitions. Word has length 15 [2023-12-02 13:38:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:55,582 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 946 transitions. [2023-12-02 13:38:55,583 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 13:38:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 946 transitions. [2023-12-02 13:38:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 13:38:55,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:55,584 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 13:38:55,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:55,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:55,787 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:55,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1576817058, now seen corresponding path program 1 times [2023-12-02 13:38:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013926674] [2023-12-02 13:38:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:55,788 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 13:38:55,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:55,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:55,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:55,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:38:55,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:55,947 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 13:38:55,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:55,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013926674] [2023-12-02 13:38:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013926674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:38:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77651696] [2023-12-02 13:38:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:55,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:38:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:38:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:38:55,949 INFO L87 Difference]: Start difference. First operand 858 states and 946 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 13:38:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:56,947 INFO L93 Difference]: Finished difference Result 844 states and 925 transitions. [2023-12-02 13:38:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:38:56,948 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 13:38:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:56,951 INFO L225 Difference]: With dead ends: 844 [2023-12-02 13:38:56,951 INFO L226 Difference]: Without dead ends: 844 [2023-12-02 13:38:56,951 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 13:38:56,952 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 58 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:56,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2184 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:38:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-12-02 13:38:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 843. [2023-12-02 13:38:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 433 states have (on average 2.115473441108545) internal successors, (916), 837 states have internal predecessors, (916), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 924 transitions. [2023-12-02 13:38:56,969 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 924 transitions. Word has length 17 [2023-12-02 13:38:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:56,970 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 924 transitions. [2023-12-02 13:38:56,970 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 13:38:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 924 transitions. [2023-12-02 13:38:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:38:56,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:56,971 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 13:38:56,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:57,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:57,172 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:38:57,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -206328208, now seen corresponding path program 1 times [2023-12-02 13:38:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375786911] [2023-12-02 13:38:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:57,173 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 13:38:57,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:57,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:57,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:38:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:57,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:38:57,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:57,326 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 13:38:57,394 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 13:38:57,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:57,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375786911] [2023-12-02 13:38:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375786911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:57,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:38:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215384897] [2023-12-02 13:38:57,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:38:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:38:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:38:57,396 INFO L87 Difference]: Start difference. First operand 843 states and 924 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 13:38:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:59,817 INFO L93 Difference]: Finished difference Result 1182 states and 1293 transitions. [2023-12-02 13:38:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:38:59,819 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 13:38:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:59,823 INFO L225 Difference]: With dead ends: 1182 [2023-12-02 13:38:59,823 INFO L226 Difference]: Without dead ends: 1182 [2023-12-02 13:38:59,824 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 13:38:59,824 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 814 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:59,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 956 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 13:38:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-12-02 13:38:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 839. [2023-12-02 13:38:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 433 states have (on average 2.1062355658198615) internal successors, (912), 833 states have internal predecessors, (912), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:38:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 920 transitions. [2023-12-02 13:38:59,837 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 920 transitions. Word has length 31 [2023-12-02 13:38:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:59,837 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 920 transitions. [2023-12-02 13:38:59,837 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 13:38:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 920 transitions. [2023-12-02 13:38:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:38:59,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:59,838 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 13:38:59,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:39:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:00,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:00,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -206328207, now seen corresponding path program 1 times [2023-12-02 13:39:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031295397] [2023-12-02 13:39:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:00,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:39:00,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:00,041 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:00,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:00,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:39:00,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:00,194 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 13:39:00,342 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 13:39:00,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:00,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:00,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031295397] [2023-12-02 13:39:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031295397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:39:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696382254] [2023-12-02 13:39:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:39:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:39:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:39:00,344 INFO L87 Difference]: Start difference. First operand 839 states and 920 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 13:39:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:03,598 INFO L93 Difference]: Finished difference Result 1235 states and 1315 transitions. [2023-12-02 13:39:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:39:03,599 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 13:39:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:03,605 INFO L225 Difference]: With dead ends: 1235 [2023-12-02 13:39:03,605 INFO L226 Difference]: Without dead ends: 1235 [2023-12-02 13:39:03,605 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 13:39:03,606 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 548 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1253 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 13:39:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-12-02 13:39:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 835. [2023-12-02 13:39:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 433 states have (on average 2.096997690531178) internal successors, (908), 829 states have internal predecessors, (908), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 916 transitions. [2023-12-02 13:39:03,623 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 916 transitions. Word has length 31 [2023-12-02 13:39:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:03,624 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 916 transitions. [2023-12-02 13:39:03,624 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 13:39:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 916 transitions. [2023-12-02 13:39:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 13:39:03,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:03,626 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] [2023-12-02 13:39:03,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:39:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:03,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:03,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash 207748330, now seen corresponding path program 1 times [2023-12-02 13:39:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234389585] [2023-12-02 13:39:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:03,829 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 13:39:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:03,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:03,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:04,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:39:04,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:04,047 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 13:39:04,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:04,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234389585] [2023-12-02 13:39:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234389585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:39:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742791711] [2023-12-02 13:39:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:04,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:39:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:39:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:39:04,049 INFO L87 Difference]: Start difference. First operand 835 states and 916 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 13:39:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:04,970 INFO L93 Difference]: Finished difference Result 829 states and 906 transitions. [2023-12-02 13:39:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:39:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-12-02 13:39:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:04,975 INFO L225 Difference]: With dead ends: 829 [2023-12-02 13:39:04,975 INFO L226 Difference]: Without dead ends: 829 [2023-12-02 13:39:04,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 13:39:04,976 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 23 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:04,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2170 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:39:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-02 13:39:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2023-12-02 13:39:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 427 states have (on average 2.1030444964871196) internal successors, (898), 823 states have internal predecessors, (898), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2023-12-02 13:39:04,986 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 47 [2023-12-02 13:39:04,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:04,986 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2023-12-02 13:39:04,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 13:39:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2023-12-02 13:39:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 13:39:04,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:04,988 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 13:39:04,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:05,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:05,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2009397589, now seen corresponding path program 1 times [2023-12-02 13:39:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:05,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543195652] [2023-12-02 13:39:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:39:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:05,191 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:05,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:05,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:39:05,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:05,576 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 13:39:05,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:05,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:05,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543195652] [2023-12-02 13:39:05,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543195652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:05,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:05,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:39:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077351466] [2023-12-02 13:39:05,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:39:05,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:39:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:39:05,578 INFO L87 Difference]: Start difference. First operand 829 states and 906 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 13:39:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:06,652 INFO L93 Difference]: Finished difference Result 1167 states and 1266 transitions. [2023-12-02 13:39:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:39:06,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2023-12-02 13:39:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:06,658 INFO L225 Difference]: With dead ends: 1167 [2023-12-02 13:39:06,658 INFO L226 Difference]: Without dead ends: 1167 [2023-12-02 13:39:06,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 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 13:39:06,659 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 368 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:06,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1526 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:39:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-12-02 13:39:06,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1002. [2023-12-02 13:39:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 600 states have (on average 2.045) internal successors, (1227), 996 states have internal predecessors, (1227), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1235 transitions. [2023-12-02 13:39:06,676 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1235 transitions. Word has length 51 [2023-12-02 13:39:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1235 transitions. [2023-12-02 13:39:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 13:39:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1235 transitions. [2023-12-02 13:39:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 13:39:06,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:06,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:06,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:39:06,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:06,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:06,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1183141797, now seen corresponding path program 1 times [2023-12-02 13:39:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:06,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914563849] [2023-12-02 13:39:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:06,881 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 13:39:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:06,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:06,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:07,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:39:07,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:07,181 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 13:39:07,190 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 13:39:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:39:07,661 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 13:39:07,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:39:07,673 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 13:39:07,684 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 13:39:07,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:07,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914563849] [2023-12-02 13:39:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914563849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:07,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:39:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094305602] [2023-12-02 13:39:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:39:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:39:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:39:07,687 INFO L87 Difference]: Start difference. First operand 1002 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:10,407 INFO L93 Difference]: Finished difference Result 1370 states and 1729 transitions. [2023-12-02 13:39:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:39:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-02 13:39:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:10,413 INFO L225 Difference]: With dead ends: 1370 [2023-12-02 13:39:10,413 INFO L226 Difference]: Without dead ends: 1370 [2023-12-02 13:39:10,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:39:10,413 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1806 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:10,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 345 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 13:39:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-02 13:39:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 941. [2023-12-02 13:39:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 577 states have (on average 1.9618717504332757) internal successors, (1132), 935 states have internal predecessors, (1132), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1140 transitions. [2023-12-02 13:39:10,429 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1140 transitions. Word has length 54 [2023-12-02 13:39:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:10,430 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1140 transitions. [2023-12-02 13:39:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1140 transitions. [2023-12-02 13:39:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:39:10,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:10,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:10,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 13:39:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:10,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:10,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 721422486, now seen corresponding path program 1 times [2023-12-02 13:39:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:10,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122499408] [2023-12-02 13:39:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:10,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:39:10,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:10,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:10,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:10,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:39:10,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:10,859 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 13:39:10,872 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 13:39:10,894 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 13:39:10,903 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 13:39:10,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:10,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122499408] [2023-12-02 13:39:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122499408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:39:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15601287] [2023-12-02 13:39:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:39:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:39:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:39:10,905 INFO L87 Difference]: Start difference. First operand 941 states and 1140 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:13,346 INFO L93 Difference]: Finished difference Result 940 states and 1139 transitions. [2023-12-02 13:39:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:39:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 13:39:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:13,351 INFO L225 Difference]: With dead ends: 940 [2023-12-02 13:39:13,351 INFO L226 Difference]: Without dead ends: 940 [2023-12-02 13:39:13,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:39:13,351 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 3 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:13,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1817 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 13:39:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-02 13:39:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2023-12-02 13:39:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 577 states have (on average 1.9601386481802425) internal successors, (1131), 934 states have internal predecessors, (1131), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1139 transitions. [2023-12-02 13:39:13,366 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1139 transitions. Word has length 58 [2023-12-02 13:39:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:13,367 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1139 transitions. [2023-12-02 13:39:13,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1139 transitions. [2023-12-02 13:39:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:39:13,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:13,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:13,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:13,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:13,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:13,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 721422487, now seen corresponding path program 1 times [2023-12-02 13:39:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459440295] [2023-12-02 13:39:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:13,569 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 13:39:13,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:13,570 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:13,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:13,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:39:13,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:13,833 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 13:39:13,851 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 13:39:13,859 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 13:39:13,901 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 13:39:13,913 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 13:39:13,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:13,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:13,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459440295] [2023-12-02 13:39:13,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459440295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:13,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:13,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:39:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666553597] [2023-12-02 13:39:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:39:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:39:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:39:13,915 INFO L87 Difference]: Start difference. First operand 940 states and 1139 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:17,133 INFO L93 Difference]: Finished difference Result 939 states and 1138 transitions. [2023-12-02 13:39:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:39:17,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-02 13:39:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:17,138 INFO L225 Difference]: With dead ends: 939 [2023-12-02 13:39:17,138 INFO L226 Difference]: Without dead ends: 939 [2023-12-02 13:39:17,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:39:17,139 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:17,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1858 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 13:39:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-12-02 13:39:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2023-12-02 13:39:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 576 states have (on average 1.9618055555555556) internal successors, (1130), 933 states have internal predecessors, (1130), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:39:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1138 transitions. [2023-12-02 13:39:17,152 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1138 transitions. Word has length 58 [2023-12-02 13:39:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:17,152 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1138 transitions. [2023-12-02 13:39:17,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:39:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1138 transitions. [2023-12-02 13:39:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 13:39:17,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:17,153 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 13:39:17,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:17,354 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:17,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1405937604, now seen corresponding path program 1 times [2023-12-02 13:39:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813088816] [2023-12-02 13:39:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:17,355 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 13:39:17,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:17,356 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:17,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:17,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:39:17,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:17,615 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 13:39:17,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:17,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813088816] [2023-12-02 13:39:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813088816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:17,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:39:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707075443] [2023-12-02 13:39:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:39:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:39:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:39:17,617 INFO L87 Difference]: Start difference. First operand 939 states and 1138 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:18,486 INFO L93 Difference]: Finished difference Result 941 states and 1141 transitions. [2023-12-02 13:39:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:39:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-12-02 13:39:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:18,494 INFO L225 Difference]: With dead ends: 941 [2023-12-02 13:39:18,494 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 13:39:18,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:39:18,495 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:18,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2109 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 13:39:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 13:39:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 941. [2023-12-02 13:39:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 577 states have (on average 1.9618717504332757) internal successors, (1132), 935 states have internal predecessors, (1132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:39:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1141 transitions. [2023-12-02 13:39:18,510 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1141 transitions. Word has length 64 [2023-12-02 13:39:18,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:18,510 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1141 transitions. [2023-12-02 13:39:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1141 transitions. [2023-12-02 13:39:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 13:39:18,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:18,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:18,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:18,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:18,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:18,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -750621124, now seen corresponding path program 1 times [2023-12-02 13:39:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670870144] [2023-12-02 13:39:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:18,713 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 13:39:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:18,714 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:18,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:18,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:39:18,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:19,006 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 13:39:19,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:19,070 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 13:39:19,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670870144] [2023-12-02 13:39:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670870144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [413612039] [2023-12-02 13:39:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:19,071 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:39:19,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:39:19,073 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:39:19,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 13:39:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:19,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:39:19,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:19,515 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 13:39:19,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:19,538 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 13:39:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [413612039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048085613] [2023-12-02 13:39:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:19,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:39:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:39:19,539 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:39:19,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:39:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:19,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:39:19,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:19,817 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 13:39:19,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:19,841 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 13:39:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048085613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:19,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:39:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 13:39:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225128323] [2023-12-02 13:39:19,842 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:39:19,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:39:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:39:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:39:19,843 INFO L87 Difference]: Start difference. First operand 941 states and 1141 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:39:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:20,985 INFO L93 Difference]: Finished difference Result 950 states and 1155 transitions. [2023-12-02 13:39:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:39:20,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2023-12-02 13:39:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:20,990 INFO L225 Difference]: With dead ends: 950 [2023-12-02 13:39:20,990 INFO L226 Difference]: Without dead ends: 950 [2023-12-02 13:39:20,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 13:39:20,991 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 6 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:20,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2807 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:39:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-02 13:39:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 949. [2023-12-02 13:39:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 584 states have (on average 1.9606164383561644) internal successors, (1145), 942 states have internal predecessors, (1145), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:39:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1154 transitions. [2023-12-02 13:39:21,008 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1154 transitions. Word has length 65 [2023-12-02 13:39:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:21,009 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1154 transitions. [2023-12-02 13:39:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:39:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1154 transitions. [2023-12-02 13:39:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 13:39:21,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:21,010 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:21,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 13:39:21,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-02 13:39:21,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:21,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:21,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:21,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1604806596, now seen corresponding path program 2 times [2023-12-02 13:39:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196655113] [2023-12-02 13:39:21,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:39:21,612 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 13:39:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:21,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:21,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:22,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:39:22,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:39:22,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:39:22,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:22,082 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 13:39:22,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:22,224 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 13:39:22,224 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196655113] [2023-12-02 13:39:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196655113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000878921] [2023-12-02 13:39:22,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:39:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:39:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:39:22,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:39:22,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 13:39:23,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:39:23,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:39:23,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:39:23,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:23,554 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 13:39:23,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:23,602 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 13:39:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000878921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612490236] [2023-12-02 13:39:23,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:39:23,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:39:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:39:23,603 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:39:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:39:47,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:39:47,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:39:47,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:39:47,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:48,087 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:39:48,087 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 13:39:48,117 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 13:39:48,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 13:39:48,347 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 13:39:48,411 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 13:39:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:39:48,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:48,538 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 13:39:48,538 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 13:39:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612490236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:39:48,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 13:39:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2023-12-02 13:39:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387286790] [2023-12-02 13:39:48,629 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 13:39:48,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 13:39:48,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 13:39:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=500, Unknown=11, NotChecked=0, Total=600 [2023-12-02 13:39:48,631 INFO L87 Difference]: Start difference. First operand 949 states and 1154 transitions. Second operand has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:39:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:57,671 INFO L93 Difference]: Finished difference Result 1369 states and 1707 transitions. [2023-12-02 13:39:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 13:39:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-12-02 13:39:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:57,677 INFO L225 Difference]: With dead ends: 1369 [2023-12-02 13:39:57,677 INFO L226 Difference]: Without dead ends: 1367 [2023-12-02 13:39:57,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=452, Invalid=2290, Unknown=14, NotChecked=0, Total=2756 [2023-12-02 13:39:57,678 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 727 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 5167 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:57,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 4396 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 5167 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 13:39:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2023-12-02 13:39:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 957. [2023-12-02 13:39:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 593 states have (on average 1.9494097807757167) internal successors, (1156), 950 states have internal predecessors, (1156), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:39:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1165 transitions. [2023-12-02 13:39:57,694 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1165 transitions. Word has length 68 [2023-12-02 13:39:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:57,695 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1165 transitions. [2023-12-02 13:39:57,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:39:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1165 transitions. [2023-12-02 13:39:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 13:39:57,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:57,696 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:57,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 13:39:57,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:58,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 13:39:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:39:58,297 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:39:58,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1326917571, now seen corresponding path program 1 times [2023-12-02 13:39:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551178689] [2023-12-02 13:39:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:58,298 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 13:39:58,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:58,299 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:58,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:39:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:58,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:39:58,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:58,684 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 13:39:58,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:59,109 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 13:39:59,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551178689] [2023-12-02 13:39:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551178689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1169971051] [2023-12-02 13:39:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:59,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:39:59,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:39:59,110 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:39:59,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 13:39:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:59,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:39:59,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:59,683 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 13:39:59,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:59,776 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 13:39:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1169971051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:39:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728272164] [2023-12-02 13:39:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:59,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:39:59,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:39:59,778 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:39:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 13:40:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:40:00,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:40:00,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:40:00,154 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 13:40:00,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:40:00,871 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 13:40:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728272164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:40:00,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:40:00,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 13:40:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981410635] [2023-12-02 13:40:00,872 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:40:00,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 13:40:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:40:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 13:40:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:40:00,875 INFO L87 Difference]: Start difference. First operand 957 states and 1165 transitions. Second operand has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:40:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:40:07,264 INFO L93 Difference]: Finished difference Result 987 states and 1210 transitions. [2023-12-02 13:40:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 13:40:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 74 [2023-12-02 13:40:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:40:07,270 INFO L225 Difference]: With dead ends: 987 [2023-12-02 13:40:07,270 INFO L226 Difference]: Without dead ends: 984 [2023-12-02 13:40:07,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 13:40:07,273 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 26 mSDsluCounter, 10492 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 11193 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:40:07,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 11193 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-02 13:40:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-12-02 13:40:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 975. [2023-12-02 13:40:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 611 states have (on average 1.9296235679214402) internal successors, (1179), 968 states have internal predecessors, (1179), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:40:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1188 transitions. [2023-12-02 13:40:07,287 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1188 transitions. Word has length 74 [2023-12-02 13:40:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:40:07,287 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1188 transitions. [2023-12-02 13:40:07,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 13:40:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1188 transitions. [2023-12-02 13:40:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 13:40:07,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:40:07,288 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:40:07,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 13:40:07,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-02 13:40:07,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:40:07,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:40:07,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:40:07,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:40:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 511268925, now seen corresponding path program 2 times [2023-12-02 13:40:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:40:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256016101] [2023-12-02 13:40:07,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:40:07,890 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 13:40:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:40:07,891 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:40:07,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:40:08,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:40:08,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:40:08,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 13:40:08,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:40:08,942 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 13:40:08,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:40:11,147 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 13:40:11,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:40:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256016101] [2023-12-02 13:40:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256016101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:40:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481942984] [2023-12-02 13:40:11,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:40:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:40:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:40:11,149 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:40:11,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 13:40:12,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:40:12,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:40:12,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 13:40:12,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:40:12,802 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 13:40:12,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:40:13,322 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 13:40:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [481942984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:40:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645889885] [2023-12-02 13:40:13,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:40:13,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:40:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:40:13,324 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:40:13,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 13:40:31,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:40:31,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:40:31,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 13:40:31,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:40:32,499 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 13:40:32,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:40:32,839 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 13:40:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645889885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:40:32,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:40:32,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 66 [2023-12-02 13:40:32,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621843155] [2023-12-02 13:40:32,840 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:40:32,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-02 13:40:32,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:40:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-02 13:40:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3202, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 13:40:32,843 INFO L87 Difference]: Start difference. First operand 975 states and 1188 transitions. Second operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:40:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:40:50,860 INFO L93 Difference]: Finished difference Result 1034 states and 1291 transitions. [2023-12-02 13:40:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 13:40:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2023-12-02 13:40:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:40:50,866 INFO L225 Difference]: With dead ends: 1034 [2023-12-02 13:40:50,866 INFO L226 Difference]: Without dead ends: 1031 [2023-12-02 13:40:50,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3690, Invalid=8742, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 13:40:50,871 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 54 mSDsluCounter, 18893 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 19594 SdHoareTripleChecker+Invalid, 6086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:40:50,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 19594 Invalid, 6086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 6008 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-02 13:40:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-02 13:40:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1011. [2023-12-02 13:40:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 647 states have (on average 1.8964451313755797) internal successors, (1227), 1004 states have internal predecessors, (1227), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:40:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1236 transitions. [2023-12-02 13:40:50,895 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1236 transitions. Word has length 86 [2023-12-02 13:40:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:40:50,895 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1236 transitions. [2023-12-02 13:40:50,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:40:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1236 transitions. [2023-12-02 13:40:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 13:40:50,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:40:50,896 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:40:50,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-02 13:40:51,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:40:51,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-02 13:40:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:40:51,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 13:40:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:40:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1586468925, now seen corresponding path program 3 times [2023-12-02 13:40:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:40:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698455702] [2023-12-02 13:40:51,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:40:51,498 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 13:40:51,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:40:51,499 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:40:51,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/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 13:40:54,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 13:40:54,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:40:54,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-02 13:40:54,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:40:54,072 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 13:40:54,173 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:40:54,173 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 13:40:54,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:40:54,199 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 13:40:54,206 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 13:40:54,311 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 13:40:54,315 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 13:40:54,971 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 13:40:54,971 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 13:40:54,984 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 13:40:55,026 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 13:40:55,034 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 13:40:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 13:40:55,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:40:56,423 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3385 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3385) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3386 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3385 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3385) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3386) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 13:40:56,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:40:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698455702] [2023-12-02 13:40:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698455702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:40:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2039896736] [2023-12-02 13:40:56,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:40:56,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:40:56,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:40:56,430 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:40:56,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-02 13:46:15,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 13:46:15,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:46:16,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-02 13:46:16,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:46:16,056 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 13:46:16,298 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:46:16,299 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 13:46:16,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:46:16,351 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 13:46:16,365 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 13:46:16,484 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 13:46:16,489 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 13:46:17,037 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 13:46:17,037 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 13:46:17,048 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 13:46:17,132 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 13:46:17,138 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 13:46:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 13:46:17,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:46:18,379 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3940 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3940) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3940 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3939 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3940) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 13:46:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2039896736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:46:18,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103792226] [2023-12-02 13:46:18,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:46:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:46:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:46:18,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:46:18,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08aefed-6637-41c9-a3bd-56b9083ad71d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process