./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:29:35,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:29:35,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:29:35,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:29:35,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:29:35,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:29:35,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:29:35,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:29:35,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:29:35,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:29:35,810 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:29:35,810 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:29:35,811 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:29:35,811 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:29:35,812 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:29:35,812 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:29:35,813 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:29:35,813 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:29:35,814 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:29:35,814 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:29:35,815 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:29:35,815 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:29:35,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:29:35,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:29:35,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:29:35,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:29:35,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:29:35,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:29:35,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:29:35,819 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:29:35,819 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:29:35,819 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:29:35,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:29:35,820 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:29:35,820 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:29:35,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:29:35,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:29:35,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:29:35,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:29:35,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:35,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:29:35,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:29:35,822 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:29:35,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:29:35,822 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:29:35,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:29:35,823 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_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2023-11-06 20:29:36,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:29:36,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:29:36,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:29:36,155 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:29:36,156 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:29:36,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-06 20:29:39,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:29:39,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:29:39,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-06 20:29:39,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/5d77e26c5/21819c825c6f4587860936bcbb2cee7f/FLAG48c545ef1 [2023-11-06 20:29:39,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/5d77e26c5/21819c825c6f4587860936bcbb2cee7f [2023-11-06 20:29:39,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:29:39,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:29:39,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:39,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:29:39,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:29:39,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:39" (1/1) ... [2023-11-06 20:29:39,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6497459e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:39, skipping insertion in model container [2023-11-06 20:29:39,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:39" (1/1) ... [2023-11-06 20:29:39,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:40,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:40,517 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) [2023-11-06 20:29:40,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69611682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:40, skipping insertion in model container [2023-11-06 20:29:40,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:40,519 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:29:40,522 INFO L158 Benchmark]: Toolchain (without parser) took 814.29ms. Allocated memory is still 144.7MB. Free memory was 113.9MB in the beginning and 96.8MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:29:40,522 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:29:40,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 811.81ms. Allocated memory is still 144.7MB. Free memory was 113.4MB in the beginning and 96.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:29:40,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 811.81ms. Allocated memory is still 144.7MB. Free memory was 113.4MB in the beginning and 96.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:29:42,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:29:43,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:29:43,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:29:43,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:29:43,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:29:43,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:29:43,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:29:43,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:29:43,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:29:43,193 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:29:43,194 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:29:43,194 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:29:43,196 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:29:43,197 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:29:43,197 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:29:43,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:29:43,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:29:43,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:29:43,201 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:29:43,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:29:43,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:29:43,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:29:43,203 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:29:43,203 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:29:43,203 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:29:43,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:29:43,204 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:29:43,205 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:29:43,205 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:29:43,207 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:29:43,207 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:29:43,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:29:43,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:29:43,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:29:43,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:29:43,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:43,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:29:43,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:29:43,210 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:29:43,210 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:29:43,211 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:29:43,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:29:43,211 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_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2023-11-06 20:29:43,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:29:43,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:29:43,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:29:43,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:29:43,664 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:29:43,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-06 20:29:46,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:29:47,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:29:47,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-06 20:29:47,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/411754ee3/5de92c1d953749638a0c1c77ba611e3c/FLAGb39db5223 [2023-11-06 20:29:47,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/data/411754ee3/5de92c1d953749638a0c1c77ba611e3c [2023-11-06 20:29:47,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:29:47,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:29:47,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:47,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:29:47,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:29:47,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:47" (1/1) ... [2023-11-06 20:29:47,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608ab02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:47, skipping insertion in model container [2023-11-06 20:29:47,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:47" (1/1) ... [2023-11-06 20:29:47,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:47,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:47,969 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:29:47,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:48,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:48,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:29:48,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:48,273 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:29:48,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48 WrapperNode [2023-11-06 20:29:48,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:48,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:48,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:29:48,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:29:48,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,402 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-06 20:29:48,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:48,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:29:48,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:29:48,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:29:48,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:29:48,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:29:48,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:29:48,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:29:48,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (1/1) ... [2023-11-06 20:29:48,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:29:48,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:29:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:29:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 20:29:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:29:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 20:29:48,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 20:29:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 20:29:48,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 20:29:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:29:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:29:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:29:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:29:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:29:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:29:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:29:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:29:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:29:48,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:29:48,828 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:29:48,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:29:48,833 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:29:52,225 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:29:52,244 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:29:52,244 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-06 20:29:52,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:52 BoogieIcfgContainer [2023-11-06 20:29:52,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:29:52,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:29:52,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:29:52,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:29:52,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:29:47" (1/3) ... [2023-11-06 20:29:52,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d8ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:52, skipping insertion in model container [2023-11-06 20:29:52,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:48" (2/3) ... [2023-11-06 20:29:52,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d8ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:52, skipping insertion in model container [2023-11-06 20:29:52,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:52" (3/3) ... [2023-11-06 20:29:52,262 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2023-11-06 20:29:52,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:29:52,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-06 20:29:52,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:29:52,359 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;@59d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:29:52,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-06 20:29:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:29:52,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:52,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:29:52,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:52,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-06 20:29:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78040597] [2023-11-06 20:29:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:52,407 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 [2023-11-06 20:29:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:52,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:52,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:52,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 20:29:52,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:52,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:52,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78040597] [2023-11-06 20:29:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78040597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:29:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976883221] [2023-11-06 20:29:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:29:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:29:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:29:52,662 INFO L87 Difference]: Start difference. First operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:29:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:52,752 INFO L93 Difference]: Finished difference Result 663 states and 709 transitions. [2023-11-06 20:29:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:29:52,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-06 20:29:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:52,779 INFO L225 Difference]: With dead ends: 663 [2023-11-06 20:29:52,780 INFO L226 Difference]: Without dead ends: 661 [2023-11-06 20:29:52,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:29:52,786 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:52,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:29:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-06 20:29:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-06 20:29:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 324 states have (on average 2.1018518518518516) internal successors, (681), 655 states have internal predecessors, (681), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 707 transitions. [2023-11-06 20:29:52,896 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 707 transitions. Word has length 5 [2023-11-06 20:29:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:52,896 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 707 transitions. [2023-11-06 20:29:52,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:29:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 707 transitions. [2023-11-06 20:29:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:29:52,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:52,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:29:52,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:53,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:53,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-06 20:29:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536054553] [2023-11-06 20:29:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:53,100 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 [2023-11-06 20:29:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:53,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:53,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:53,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:29:53,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:53,317 INFO L351 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 [2023-11-06 20:29:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:53,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:53,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536054553] [2023-11-06 20:29:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536054553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:53,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:53,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:29:53,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799832839] [2023-11-06 20:29:53,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:53,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:53,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:53,349 INFO L87 Difference]: Start difference. First operand 661 states and 707 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-06 20:29:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:54,957 INFO L93 Difference]: Finished difference Result 622 states and 669 transitions. [2023-11-06 20:29:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:54,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-06 20:29:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:54,962 INFO L225 Difference]: With dead ends: 622 [2023-11-06 20:29:54,962 INFO L226 Difference]: Without dead ends: 622 [2023-11-06 20:29:54,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:54,964 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 598 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:54,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 358 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 20:29:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-06 20:29:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 612. [2023-11-06 20:29:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 324 states have (on average 1.9506172839506173) internal successors, (632), 606 states have internal predecessors, (632), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 658 transitions. [2023-11-06 20:29:55,007 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 658 transitions. Word has length 5 [2023-11-06 20:29:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:55,010 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 658 transitions. [2023-11-06 20:29:55,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-06 20:29:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 658 transitions. [2023-11-06 20:29:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:29:55,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:55,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:29:55,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 20:29:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:55,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:55,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-06 20:29:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733306274] [2023-11-06 20:29:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:55,225 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 [2023-11-06 20:29:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:55,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:55,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:55,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:29:55,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:55,358 INFO L351 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 [2023-11-06 20:29:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:55,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:55,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733306274] [2023-11-06 20:29:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733306274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:29:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406082465] [2023-11-06 20:29:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:55,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:55,391 INFO L87 Difference]: Start difference. First operand 612 states and 658 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-06 20:29:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:57,259 INFO L93 Difference]: Finished difference Result 682 states and 732 transitions. [2023-11-06 20:29:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-06 20:29:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:57,264 INFO L225 Difference]: With dead ends: 682 [2023-11-06 20:29:57,264 INFO L226 Difference]: Without dead ends: 682 [2023-11-06 20:29:57,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:57,266 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 258 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:57,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 757 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 20:29:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-06 20:29:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2023-11-06 20:29:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 356 states have (on average 1.9325842696629214) internal successors, (688), 628 states have internal predecessors, (688), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 714 transitions. [2023-11-06 20:29:57,297 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 714 transitions. Word has length 5 [2023-11-06 20:29:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:57,297 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 714 transitions. [2023-11-06 20:29:57,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-06 20:29:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 714 transitions. [2023-11-06 20:29:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:29:57,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:57,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:29:57,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:57,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:57,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:57,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-06 20:29:57,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:57,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867989361] [2023-11-06 20:29:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:57,511 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 [2023-11-06 20:29:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:57,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:57,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:57,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 20:29:57,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:57,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:57,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867989361] [2023-11-06 20:29:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867989361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:57,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:29:57,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742651891] [2023-11-06 20:29:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:57,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:57,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:57,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:57,628 INFO L87 Difference]: Start difference. First operand 634 states and 714 transitions. Second operand has 3 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) [2023-11-06 20:29:57,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:57,733 INFO L93 Difference]: Finished difference Result 1218 states and 1358 transitions. [2023-11-06 20:29:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-11-06 20:29:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:57,745 INFO L225 Difference]: With dead ends: 1218 [2023-11-06 20:29:57,745 INFO L226 Difference]: Without dead ends: 1218 [2023-11-06 20:29:57,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:57,748 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 571 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:57,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1507 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:29:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-06 20:29:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 635. [2023-11-06 20:29:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 357 states have (on average 1.9299719887955182) internal successors, (689), 629 states have internal predecessors, (689), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 715 transitions. [2023-11-06 20:29:57,778 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 715 transitions. Word has length 6 [2023-11-06 20:29:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:57,778 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 715 transitions. [2023-11-06 20:29:57,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-06 20:29:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 715 transitions. [2023-11-06 20:29:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:29:57,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:57,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:29:57,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 20:29:57,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:57,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:57,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-06 20:29:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772571624] [2023-11-06 20:29:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:57,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:57,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:57,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:58,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 20:29:58,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:58,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:58,154 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772571624] [2023-11-06 20:29:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772571624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:58,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:58,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:29:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49619938] [2023-11-06 20:29:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:58,157 INFO L87 Difference]: Start difference. First operand 635 states and 715 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:29:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:58,195 INFO L93 Difference]: Finished difference Result 593 states and 672 transitions. [2023-11-06 20:29:58,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 20:29:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:58,203 INFO L225 Difference]: With dead ends: 593 [2023-11-06 20:29:58,203 INFO L226 Difference]: Without dead ends: 593 [2023-11-06 20:29:58,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:58,204 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 81 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:58,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:29:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-11-06 20:29:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-11-06 20:29:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 339 states have (on average 1.9056047197640118) internal successors, (646), 587 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 672 transitions. [2023-11-06 20:29:58,224 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 672 transitions. Word has length 11 [2023-11-06 20:29:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:58,224 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 672 transitions. [2023-11-06 20:29:58,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:29:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 672 transitions. [2023-11-06 20:29:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:29:58,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:58,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:29:58,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:58,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:58,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-06 20:29:58,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:58,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128496060] [2023-11-06 20:29:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:58,438 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 [2023-11-06 20:29:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:58,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:58,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:58,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:29:58,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:58,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:58,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128496060] [2023-11-06 20:29:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128496060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:58,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:29:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093738183] [2023-11-06 20:29:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:58,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:29:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:58,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:29:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:29:58,665 INFO L87 Difference]: Start difference. First operand 593 states and 672 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:29:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:58,757 INFO L93 Difference]: Finished difference Result 572 states and 644 transitions. [2023-11-06 20:29:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:29:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 20:29:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:58,761 INFO L225 Difference]: With dead ends: 572 [2023-11-06 20:29:58,761 INFO L226 Difference]: Without dead ends: 572 [2023-11-06 20:29:58,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:29:58,762 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 62 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:58,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1610 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:29:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-06 20:29:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2023-11-06 20:29:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 331 states have (on average 1.86404833836858) internal successors, (617), 565 states have internal predecessors, (617), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:29:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 643 transitions. [2023-11-06 20:29:58,778 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 643 transitions. Word has length 13 [2023-11-06 20:29:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:58,778 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 643 transitions. [2023-11-06 20:29:58,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 20:29:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 643 transitions. [2023-11-06 20:29:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 20:29:58,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:58,779 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] [2023-11-06 20:29:58,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 20:29:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:29:58,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:29:58,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-06 20:29:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016196448] [2023-11-06 20:29:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:58,993 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 [2023-11-06 20:29:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:58,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:29:59,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:29:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:59,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:29:59,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:59,156 INFO L351 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 [2023-11-06 20:29:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:59,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:59,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:59,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016196448] [2023-11-06 20:29:59,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016196448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:59,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:59,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:29:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196442363] [2023-11-06 20:29:59,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:59,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:29:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:29:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:29:59,266 INFO L87 Difference]: Start difference. First operand 571 states and 643 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 20:30:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:01,020 INFO L93 Difference]: Finished difference Result 577 states and 650 transitions. [2023-11-06 20:30:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:30:01,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-06 20:30:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:01,024 INFO L225 Difference]: With dead ends: 577 [2023-11-06 20:30:01,025 INFO L226 Difference]: Without dead ends: 577 [2023-11-06 20:30:01,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:30:01,026 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 527 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:01,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 533 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 20:30:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-06 20:30:01,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 567. [2023-11-06 20:30:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 331 states have (on average 1.851963746223565) internal successors, (613), 561 states have internal predecessors, (613), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:30:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2023-11-06 20:30:01,045 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 27 [2023-11-06 20:30:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:01,045 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2023-11-06 20:30:01,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 20:30:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2023-11-06 20:30:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 20:30:01,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:01,047 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] [2023-11-06 20:30:01,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 20:30:01,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:01,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:30:01,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-06 20:30:01,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:01,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745748884] [2023-11-06 20:30:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:01,261 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 [2023-11-06 20:30:01,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:01,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:30:01,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:01,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 20:30:01,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:01,435 INFO L351 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 [2023-11-06 20:30:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:01,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:01,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:01,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745748884] [2023-11-06 20:30:01,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745748884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:01,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:01,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:30:01,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569065681] [2023-11-06 20:30:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:01,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:30:01,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:01,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:30:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:30:01,684 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 20:30:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:03,832 INFO L93 Difference]: Finished difference Result 611 states and 653 transitions. [2023-11-06 20:30:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:30:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-06 20:30:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:03,837 INFO L225 Difference]: With dead ends: 611 [2023-11-06 20:30:03,837 INFO L226 Difference]: Without dead ends: 611 [2023-11-06 20:30:03,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:30:03,838 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 189 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:03,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 963 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 20:30:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-06 20:30:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2023-11-06 20:30:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 331 states have (on average 1.8398791540785497) internal successors, (609), 557 states have internal predecessors, (609), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:30:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 635 transitions. [2023-11-06 20:30:03,855 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 635 transitions. Word has length 27 [2023-11-06 20:30:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:03,855 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 635 transitions. [2023-11-06 20:30:03,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2023-11-06 20:30:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 635 transitions. [2023-11-06 20:30:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 20:30:03,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:03,857 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] [2023-11-06 20:30:03,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 20:30:04,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:04,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:30:04,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:04,064 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-06 20:30:04,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:04,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826798220] [2023-11-06 20:30:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:04,065 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 [2023-11-06 20:30:04,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:04,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:30:04,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:04,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:30:04,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:04,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:04,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:04,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826798220] [2023-11-06 20:30:04,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826798220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:04,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:04,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:30:04,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307474292] [2023-11-06 20:30:04,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:04,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:30:04,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:30:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:30:04,336 INFO L87 Difference]: Start difference. First operand 563 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2023-11-06 20:30:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:04,404 INFO L93 Difference]: Finished difference Result 557 states and 625 transitions. [2023-11-06 20:30:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:30:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-06 20:30:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:04,408 INFO L225 Difference]: With dead ends: 557 [2023-11-06 20:30:04,408 INFO L226 Difference]: Without dead ends: 557 [2023-11-06 20:30:04,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:30:04,411 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 31 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:04,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1588 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:30:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-06 20:30:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2023-11-06 20:30:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.843076923076923) internal successors, (599), 551 states have internal predecessors, (599), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:30:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 625 transitions. [2023-11-06 20:30:04,427 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 625 transitions. Word has length 43 [2023-11-06 20:30:04,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:04,429 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 625 transitions. [2023-11-06 20:30:04,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2023-11-06 20:30:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 625 transitions. [2023-11-06 20:30:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-06 20:30:04,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:04,433 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] [2023-11-06 20:30:04,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:04,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:30:04,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-06 20:30:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77813727] [2023-11-06 20:30:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:04,653 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 [2023-11-06 20:30:04,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:04,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:30:04,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:04,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:30:04,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:05,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:05,182 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:05,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77813727] [2023-11-06 20:30:05,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77813727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:05,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:05,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:30:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999966918] [2023-11-06 20:30:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:05,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:30:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:30:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:30:05,184 INFO L87 Difference]: Start difference. First operand 557 states and 625 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-11-06 20:30:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:05,287 INFO L93 Difference]: Finished difference Result 604 states and 672 transitions. [2023-11-06 20:30:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:30:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2023-11-06 20:30:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:05,291 INFO L225 Difference]: With dead ends: 604 [2023-11-06 20:30:05,292 INFO L226 Difference]: Without dead ends: 604 [2023-11-06 20:30:05,292 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 [2023-11-06 20:30:05,292 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:05,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1018 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:30:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-06 20:30:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2023-11-06 20:30:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 372 states have (on average 1.7365591397849462) internal successors, (646), 598 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:30:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 672 transitions. [2023-11-06 20:30:05,308 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 672 transitions. Word has length 51 [2023-11-06 20:30:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:05,309 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 672 transitions. [2023-11-06 20:30:05,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2023-11-06 20:30:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 672 transitions. [2023-11-06 20:30:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 20:30:05,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:05,310 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] [2023-11-06 20:30:05,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:05,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:30:05,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-06 20:30:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:05,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291373192] [2023-11-06 20:30:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:05,524 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 [2023-11-06 20:30:05,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:05,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:30:05,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:05,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 20:30:05,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:05,942 INFO L351 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 [2023-11-06 20:30:05,952 INFO L351 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 [2023-11-06 20:30:06,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:30:06,586 INFO L351 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 [2023-11-06 20:30:06,610 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 20:30:06,610 INFO L351 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 [2023-11-06 20:30:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:06,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:06,629 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:06,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291373192] [2023-11-06 20:30:06,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291373192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:06,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:06,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:30:06,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645164783] [2023-11-06 20:30:06,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:06,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:30:06,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:30:06,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:30:06,632 INFO L87 Difference]: Start difference. First operand 604 states and 672 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) [2023-11-06 20:30:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:30:08,323 INFO L93 Difference]: Finished difference Result 576 states and 645 transitions. [2023-11-06 20:30:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:30:08,324 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 [2023-11-06 20:30:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:30:08,327 INFO L225 Difference]: With dead ends: 576 [2023-11-06 20:30:08,327 INFO L226 Difference]: Without dead ends: 576 [2023-11-06 20:30:08,328 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 [2023-11-06 20:30:08,328 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 399 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 20:30:08,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 321 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 20:30:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-06 20:30:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 534. [2023-11-06 20:30:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 340 states have (on average 1.5941176470588236) internal successors, (542), 528 states have internal predecessors, (542), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 20:30:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 568 transitions. [2023-11-06 20:30:08,346 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 568 transitions. Word has length 54 [2023-11-06 20:30:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:30:08,346 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 568 transitions. [2023-11-06 20:30:08,346 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) [2023-11-06 20:30:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 568 transitions. [2023-11-06 20:30:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-06 20:30:08,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:08,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:30:08,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 20:30:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:30:08,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-06 20:30:08,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-06 20:30:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:30:08,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532996048] [2023-11-06 20:30:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:08,565 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 [2023-11-06 20:30:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:30:08,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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) [2023-11-06 20:30:08,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de28023d-a843-4b14-8612-5493af795114/bin/utaipan-verify-FOvIYxoinp/mathsat -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 [2023-11-06 20:30:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:30:08,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 20:30:08,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:30:08,881 INFO L351 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 [2023-11-06 20:30:08,902 INFO L351 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 [2023-11-06 20:30:08,939 INFO L351 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 [2023-11-06 20:30:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:30:08,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:30:08,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:30:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532996048] [2023-11-06 20:30:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532996048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:30:08,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:30:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:30:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50003350] [2023-11-06 20:30:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:30:08,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:30:08,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:30:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:30:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:30:08,960 INFO L87 Difference]: Start difference. First operand 534 states and 568 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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)