./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e04fb08f 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_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:27:50,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:50,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:50,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:50,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:50,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:50,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:50,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:50,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:50,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:50,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:50,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:50,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:50,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:50,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:50,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:50,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:50,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:50,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:50,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:50,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:50,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:50,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:50,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:50,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:50,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:50,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:50,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:50,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:50,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:50,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:50,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:50,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:50,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:50,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:50,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:50,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:50,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:50,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:50,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:50,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:50,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-11-16 12:27:50,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:50,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:50,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:50,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:50,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:50,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:50,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:50,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:50,747 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:50,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:50,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:50,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:50,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:50,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:50,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:50,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:27:50,751 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:27:50,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:50,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:27:50,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:50,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:50,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:50,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:50,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:50,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:50,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:50,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:50,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:50,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:50,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2022-11-16 12:27:51,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:51,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:51,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:51,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:51,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:51,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/list-properties/list_search-1.i [2022-11-16 12:27:51,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/59e3a3b34/12be6e69ddda4df4809315ea93b07fba/FLAG3ca6343e4 [2022-11-16 12:27:51,720 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:51,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i [2022-11-16 12:27:51,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/59e3a3b34/12be6e69ddda4df4809315ea93b07fba/FLAG3ca6343e4 [2022-11-16 12:27:52,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/59e3a3b34/12be6e69ddda4df4809315ea93b07fba [2022-11-16 12:27:52,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:52,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:52,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:52,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:52,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:52,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19efedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52, skipping insertion in model container [2022-11-16 12:27:52,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:52" (1/1) ... [2022-11-16 12:27:52,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:52,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:52,368 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-11-16 12:27:52,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:52,549 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:27:52,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26c2d0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:52, skipping insertion in model container [2022-11-16 12:27:52,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:52,551 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:27:52,553 INFO L158 Benchmark]: Toolchain (without parser) took 504.28ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 90.0MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:27:52,555 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 97.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:27:52,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.05ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 90.0MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:27:52,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 97.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.05ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 90.0MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 542]: 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_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:27:54,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:54,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:54,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:54,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:54,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:54,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:54,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:54,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:54,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:54,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:54,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:54,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:54,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:54,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:54,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:54,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:54,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:54,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:54,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:54,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:54,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:54,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:54,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:54,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:54,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:54,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:54,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:54,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:54,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:54,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:54,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:54,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:54,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:54,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:54,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:54,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:54,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:54,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:54,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:54,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:54,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2022-11-16 12:27:54,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:54,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:54,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:54,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:54,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:54,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:54,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:54,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:54,920 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:54,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:54,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:54,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:54,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:54,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:54,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:54,923 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:27:54,923 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:27:54,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:54,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:27:54,924 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:27:54,924 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:27:54,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:54,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:54,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:54,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:54,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:54,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:54,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:54,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:54,927 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:27:54,927 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:27:54,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:27:54,927 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2022-11-16 12:27:55,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:55,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:55,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:55,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:55,412 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:55,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/list-properties/list_search-1.i [2022-11-16 12:27:55,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/d4b1c59bd/84c7e388d44848ebae0d5279c6032e69/FLAGa88e22683 [2022-11-16 12:27:56,038 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:56,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i [2022-11-16 12:27:56,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/d4b1c59bd/84c7e388d44848ebae0d5279c6032e69/FLAGa88e22683 [2022-11-16 12:27:56,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/data/d4b1c59bd/84c7e388d44848ebae0d5279c6032e69 [2022-11-16 12:27:56,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:56,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:56,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:56,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:56,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:56,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:56,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8522b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56, skipping insertion in model container [2022-11-16 12:27:56,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:56,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:56,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:56,654 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-11-16 12:27:56,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:56,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:27:56,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:56,791 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-11-16 12:27:56,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:56,847 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:56,868 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2022-11-16 12:27:56,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:56,956 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:56,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56 WrapperNode [2022-11-16 12:27:56,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:56,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:56,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:56,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:56,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:56,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,006 INFO L138 Inliner]: procedures = 128, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-16 12:27:57,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:57,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:57,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:57,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:57,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,037 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:57,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:57,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:57,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:57,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (1/1) ... [2022-11-16 12:27:57,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:57,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:57,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:57,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:27:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2022-11-16 12:27:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:27:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:27:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:57,380 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:57,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:57,781 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:57,789 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:57,789 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:27:57,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:57 BoogieIcfgContainer [2022-11-16 12:27:57,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:57,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:57,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:57,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:57,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:56" (1/3) ... [2022-11-16 12:27:57,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8aa949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:57, skipping insertion in model container [2022-11-16 12:27:57,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:56" (2/3) ... [2022-11-16 12:27:57,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8aa949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:57, skipping insertion in model container [2022-11-16 12:27:57,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:57" (3/3) ... [2022-11-16 12:27:57,800 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2022-11-16 12:27:57,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:57,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-11-16 12:27:57,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:57,910 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;@23d5625d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:57,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 12:27:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:27:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:27:57,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:57,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:27:57,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:27:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 48806309, now seen corresponding path program 1 times [2022-11-16 12:27:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749203939] [2022-11-16 12:27:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:57,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:57,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:57,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:27:58,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:27:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:27:58,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:58,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:27:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:58,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:58,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749203939] [2022-11-16 12:27:58,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749203939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:58,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:58,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:58,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380542426] [2022-11-16 12:27:58,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:58,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:58,290 INFO L87 Difference]: Start difference. First operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:58,471 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-11-16 12:27:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:27:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:58,482 INFO L225 Difference]: With dead ends: 59 [2022-11-16 12:27:58,483 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:27:58,484 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 [2022-11-16 12:27:58,488 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:58,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:27:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:27:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-16 12:27:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 51 states have internal predecessors, (55), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:27:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2022-11-16 12:27:58,523 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 5 [2022-11-16 12:27:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:58,524 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2022-11-16 12:27:58,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2022-11-16 12:27:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:27:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:58,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:27:58,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:58,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:27:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash 48806310, now seen corresponding path program 1 times [2022-11-16 12:27:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:58,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462464167] [2022-11-16 12:27:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:58,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:58,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:58,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:27:58,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:27:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:58,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:58,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:27:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:58,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:58,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:58,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462464167] [2022-11-16 12:27:58,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462464167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:58,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:58,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355485142] [2022-11-16 12:27:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:58,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:58,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:58,852 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:58,998 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-16 12:27:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:27:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:59,001 INFO L225 Difference]: With dead ends: 53 [2022-11-16 12:27:59,002 INFO L226 Difference]: Without dead ends: 53 [2022-11-16 12:27:59,002 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 [2022-11-16 12:27:59,003 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:59,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:27:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-16 12:27:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-16 12:27:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.457142857142857) internal successors, (51), 47 states have internal predecessors, (51), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:27:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-11-16 12:27:59,013 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 5 [2022-11-16 12:27:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:59,014 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-11-16 12:27:59,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-11-16 12:27:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:27:59,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:59,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:59,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 12:27:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:59,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:27:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1546335105, now seen corresponding path program 1 times [2022-11-16 12:27:59,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:27:59,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095564546] [2022-11-16 12:27:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:27:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:27:59,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:27:59,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:27:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:59,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:27:59,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:27:59,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:27:59,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:27:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095564546] [2022-11-16 12:27:59,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095564546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:59,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:59,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-16 12:27:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279873307] [2022-11-16 12:27:59,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:59,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:27:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:27:59,786 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:00,080 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-11-16 12:28:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:28:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2022-11-16 12:28:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:00,083 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:28:00,083 INFO L226 Difference]: Without dead ends: 72 [2022-11-16 12:28:00,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:28:00,085 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:00,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 162 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:28:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-16 12:28:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-11-16 12:28:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-11-16 12:28:00,095 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 41 [2022-11-16 12:28:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:00,095 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-11-16 12:28:00,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-11-16 12:28:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:28:00,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:00,097 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:00,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:00,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:00,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963380, now seen corresponding path program 1 times [2022-11-16 12:28:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428080595] [2022-11-16 12:28:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:00,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:00,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:28:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:00,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:28:00,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:00,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:00,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:00,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:00,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428080595] [2022-11-16 12:28:00,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428080595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:00,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:00,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:28:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650159271] [2022-11-16 12:28:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:00,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:00,682 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:01,043 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-11-16 12:28:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:28:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-16 12:28:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:01,045 INFO L225 Difference]: With dead ends: 90 [2022-11-16 12:28:01,045 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 12:28:01,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:01,047 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:01,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:28:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 12:28:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2022-11-16 12:28:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.425531914893617) internal successors, (67), 58 states have internal predecessors, (67), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2022-11-16 12:28:01,055 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 44 [2022-11-16 12:28:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:01,056 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2022-11-16 12:28:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2022-11-16 12:28:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:28:01,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:01,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:01,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:01,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:01,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963379, now seen corresponding path program 1 times [2022-11-16 12:28:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205885041] [2022-11-16 12:28:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:01,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:01,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:01,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:01,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:28:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:01,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:01,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:01,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:01,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:01,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:01,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205885041] [2022-11-16 12:28:01,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205885041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:01,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:01,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:28:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490221431] [2022-11-16 12:28:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:01,733 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:02,117 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-11-16 12:28:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:28:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-16 12:28:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:02,119 INFO L225 Difference]: With dead ends: 106 [2022-11-16 12:28:02,119 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 12:28:02,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:02,120 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 104 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:02,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 91 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:28:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 12:28:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2022-11-16 12:28:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 63 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2022-11-16 12:28:02,127 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 44 [2022-11-16 12:28:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:02,128 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2022-11-16 12:28:02,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2022-11-16 12:28:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:28:02,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:02,130 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:02,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:02,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:02,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1662023696, now seen corresponding path program 1 times [2022-11-16 12:28:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:02,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766681727] [2022-11-16 12:28:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:02,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:02,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:02,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:28:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:02,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:28:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:02,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:02,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:02,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766681727] [2022-11-16 12:28:02,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766681727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:02,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:02,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:28:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542529831] [2022-11-16 12:28:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:02,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:28:02,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:28:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:28:02,765 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:03,137 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-11-16 12:28:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:03,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-11-16 12:28:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:03,139 INFO L225 Difference]: With dead ends: 106 [2022-11-16 12:28:03,139 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 12:28:03,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:03,140 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 110 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:03,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 164 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:28:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 12:28:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2022-11-16 12:28:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2022-11-16 12:28:03,147 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 47 [2022-11-16 12:28:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:03,148 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2022-11-16 12:28:03,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-11-16 12:28:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:28:03,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:03,149 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:03,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:03,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:03,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916083, now seen corresponding path program 1 times [2022-11-16 12:28:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:03,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834503916] [2022-11-16 12:28:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:03,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:03,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:03,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:03,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:28:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:03,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:28:03,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:03,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:03,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:03,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834503916] [2022-11-16 12:28:03,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834503916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:03,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:28:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516447459] [2022-11-16 12:28:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:03,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:03,989 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:04,706 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-11-16 12:28:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:04,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-11-16 12:28:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:04,708 INFO L225 Difference]: With dead ends: 105 [2022-11-16 12:28:04,708 INFO L226 Difference]: Without dead ends: 105 [2022-11-16 12:28:04,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:04,709 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 150 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:04,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 139 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:28:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-16 12:28:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2022-11-16 12:28:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 66 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-11-16 12:28:04,717 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 49 [2022-11-16 12:28:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-11-16 12:28:04,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-11-16 12:28:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:28:04,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:04,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:04,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:04,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916084, now seen corresponding path program 1 times [2022-11-16 12:28:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:04,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273521437] [2022-11-16 12:28:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:04,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:04,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:04,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:04,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:28:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:05,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:28:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:05,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:05,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:05,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:05,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273521437] [2022-11-16 12:28:05,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273521437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:05,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:05,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:28:05,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969535873] [2022-11-16 12:28:05,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:05,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:05,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:05,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:05,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:28:05,384 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:05,952 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-11-16 12:28:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:05,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-11-16 12:28:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:05,954 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:28:05,954 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 12:28:05,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:05,955 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 125 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:05,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 132 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:28:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 12:28:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-11-16 12:28:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 69 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:28:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2022-11-16 12:28:05,962 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 49 [2022-11-16 12:28:05,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:05,963 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2022-11-16 12:28:05,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2022-11-16 12:28:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:28:05,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:05,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:05,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:06,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:06,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857552, now seen corresponding path program 1 times [2022-11-16 12:28:06,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:06,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13675300] [2022-11-16 12:28:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:06,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:06,181 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:28:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:06,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:28:06,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:06,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:06,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:06,924 INFO L321 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2022-11-16 12:28:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-16 12:28:07,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:28:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:07,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:07,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13675300] [2022-11-16 12:28:07,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13675300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:07,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:07,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-11-16 12:28:07,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358396307] [2022-11-16 12:28:07,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:07,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:28:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:28:07,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:28:07,798 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:09,914 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-11-16 12:28:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:28:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-11-16 12:28:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:09,916 INFO L225 Difference]: With dead ends: 127 [2022-11-16 12:28:09,916 INFO L226 Difference]: Without dead ends: 127 [2022-11-16 12:28:09,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:28:09,917 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 382 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:09,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 250 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:28:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-16 12:28:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 83. [2022-11-16 12:28:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 76 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-11-16 12:28:09,924 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 51 [2022-11-16 12:28:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:09,925 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-11-16 12:28:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-11-16 12:28:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:28:09,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:09,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:09,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:10,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:10,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857553, now seen corresponding path program 1 times [2022-11-16 12:28:10,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:10,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426448958] [2022-11-16 12:28:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:10,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:10,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:10,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:10,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:28:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:10,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 12:28:10,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:10,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:10,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:10,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:10,945 INFO L321 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-11-16 12:28:10,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:28:11,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:28:11,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 12:28:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:11,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:12,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:12,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426448958] [2022-11-16 12:28:12,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426448958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622170234] [2022-11-16 12:28:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,182 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:28:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:28:12,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:28:12,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-16 12:28:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:28:12,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:12,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:12,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:13,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:13,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:13,698 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-11-16 12:28:13,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2022-11-16 12:28:13,722 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-11-16 12:28:13,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 12:28:14,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:28:14,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:28:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:14,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:14,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622170234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:14,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:14,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-16 12:28:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788812706] [2022-11-16 12:28:14,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:14,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:28:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:28:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:28:14,813 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:18,178 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2022-11-16 12:28:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2022-11-16 12:28:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:18,180 INFO L225 Difference]: With dead ends: 155 [2022-11-16 12:28:18,180 INFO L226 Difference]: Without dead ends: 155 [2022-11-16 12:28:18,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=271, Invalid=1451, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:28:18,181 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 467 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:18,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 322 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 496 Invalid, 0 Unknown, 234 Unchecked, 1.5s Time] [2022-11-16 12:28:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-16 12:28:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 86. [2022-11-16 12:28:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 79 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2022-11-16 12:28:18,187 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 51 [2022-11-16 12:28:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:18,187 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2022-11-16 12:28:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2022-11-16 12:28:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:28:18,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:18,189 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:18,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:28:18,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:18,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:28:18,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -105219752, now seen corresponding path program 1 times [2022-11-16 12:28:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:18,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236743443] [2022-11-16 12:28:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:18,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:18,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:18,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:28:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:19,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:19,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:19,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-16 12:28:19,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:28:19,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:19,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 13 [2022-11-16 12:28:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:28:19,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:19,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236743443] [2022-11-16 12:28:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236743443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:19,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:19,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:28:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062853892] [2022-11-16 12:28:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:19,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:28:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:28:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:19,194 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:19,651 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2022-11-16 12:28:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:28:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2022-11-16 12:28:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:19,652 INFO L225 Difference]: With dead ends: 83 [2022-11-16 12:28:19,652 INFO L226 Difference]: Without dead ends: 83 [2022-11-16 12:28:19,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:28:19,653 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 19 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 287 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2022-11-16 12:28:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-16 12:28:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-16 12:28:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-11-16 12:28:19,658 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 52 [2022-11-16 12:28:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:19,658 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-11-16 12:28:19,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-11-16 12:28:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:28:19,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:19,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:19,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:19,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1534863564, now seen corresponding path program 1 times [2022-11-16 12:28:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158188621] [2022-11-16 12:28:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:19,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:19,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:19,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:19,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:28:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:20,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:28:20,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:20,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:20,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 12:28:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:20,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:20,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158188621] [2022-11-16 12:28:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158188621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:20,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:20,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2022-11-16 12:28:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004227713] [2022-11-16 12:28:20,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:20,968 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:22,472 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2022-11-16 12:28:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:28:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-11-16 12:28:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:22,473 INFO L225 Difference]: With dead ends: 123 [2022-11-16 12:28:22,473 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 12:28:22,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:28:22,475 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 268 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:22,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 330 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:28:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 12:28:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 82. [2022-11-16 12:28:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.296875) internal successors, (83), 75 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2022-11-16 12:28:22,483 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 54 [2022-11-16 12:28:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:22,483 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2022-11-16 12:28:22,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2022-11-16 12:28:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:28:22,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:22,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:22,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:22,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:22,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 527248649, now seen corresponding path program 1 times [2022-11-16 12:28:22,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:22,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5156236] [2022-11-16 12:28:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:22,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:22,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:22,694 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:22,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:28:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:28:23,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:23,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:23,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:28:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:23,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:23,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 6 [2022-11-16 12:28:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:25,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:25,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5156236] [2022-11-16 12:28:25,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5156236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:25,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:25,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2022-11-16 12:28:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357494110] [2022-11-16 12:28:25,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:25,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:28:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:28:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:28:25,213 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:29,784 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2022-11-16 12:28:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:28:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2022-11-16 12:28:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:29,786 INFO L225 Difference]: With dead ends: 139 [2022-11-16 12:28:29,786 INFO L226 Difference]: Without dead ends: 139 [2022-11-16 12:28:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=383, Invalid=1969, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 12:28:29,789 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 437 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:29,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 527 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:28:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-16 12:28:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 82. [2022-11-16 12:28:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.28125) internal successors, (82), 75 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-11-16 12:28:29,796 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 56 [2022-11-16 12:28:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:29,796 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-11-16 12:28:29,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:28:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-11-16 12:28:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:28:29,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:29,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:29,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:30,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:30,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -69599988, now seen corresponding path program 2 times [2022-11-16 12:28:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056443433] [2022-11-16 12:28:30,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:30,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:30,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:30,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:28:30,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:30,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 12:28:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:30,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:30,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:30,992 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:28:30,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:28:31,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:31,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:31,649 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:28:31,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-11-16 12:28:31,680 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-16 12:28:31,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:28:31,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-16 12:28:32,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:28:33,054 INFO L321 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-11-16 12:28:33,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 87 [2022-11-16 12:28:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:33,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:34,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:34,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 12:28:35,858 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_113 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (select (store |c_#valid| v_~head~0.base_113 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_113 v_arrayElimArr_2) c_~head~0.base) (bvadd c_~head~0.offset (_ bv4 32)))) (_ bv1 1))) (not (= (select v_arrayElimArr_2 (_ bv4 32)) c_~head~0.base)))) is different from false [2022-11-16 12:28:35,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056443433] [2022-11-16 12:28:35,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056443433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:35,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1114421853] [2022-11-16 12:28:35,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:35,862 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:28:35,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:28:35,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:28:35,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-16 12:28:36,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:36,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:36,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 12:28:36,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:36,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:37,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:37,278 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:28:37,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:28:37,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:37,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:38,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:38,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-16 12:28:38,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:38,430 INFO L321 Elim1Store]: treesize reduction 52, result has 38.1 percent of original size [2022-11-16 12:28:38,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 65 [2022-11-16 12:28:39,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:28:39,605 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:28:39,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2022-11-16 12:28:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:39,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:40,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:40,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 12:28:40,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1114421853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:40,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:40,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2022-11-16 12:28:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237817754] [2022-11-16 12:28:40,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:40,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:28:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:28:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1344, Unknown=7, NotChecked=74, Total=1560 [2022-11-16 12:28:40,875 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:28:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:42,123 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-11-16 12:28:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:42,124 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2022-11-16 12:28:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:42,125 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:28:42,125 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 12:28:42,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=216, Invalid=1847, Unknown=11, NotChecked=88, Total=2162 [2022-11-16 12:28:42,127 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:42,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 474 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 279 Unchecked, 0.5s Time] [2022-11-16 12:28:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 12:28:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2022-11-16 12:28:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 79 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:28:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-11-16 12:28:42,131 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 58 [2022-11-16 12:28:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:42,132 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-11-16 12:28:42,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:28:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-11-16 12:28:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:28:42,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:42,133 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:42,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:42,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-16 12:28:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:42,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:28:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash -69599987, now seen corresponding path program 2 times [2022-11-16 12:28:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:28:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514973429] [2022-11-16 12:28:42,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:28:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:28:42,537 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:28:42,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:28:43,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:43,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:43,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:28:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:43,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:43,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:43,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:43,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:43,641 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:28:43,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:28:43,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:28:44,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:44,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:44,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-16 12:28:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:28:44,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,511 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-11-16 12:28:44,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2022-11-16 12:28:44,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:28:45,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:45,634 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 12:28:45,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-11-16 12:28:45,657 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:28:45,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 12:28:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:45,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:47,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:47,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2022-11-16 12:28:47,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:47,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2022-11-16 12:28:47,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2022-11-16 12:28:48,004 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd c_~head~0.offset (_ bv4 32)))) (and (forall ((v_~head~0.base_125 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_125))) (forall ((v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.offset (select v_arrayElimArr_8 (_ bv4 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_125 v_arrayElimArr_8) c_~head~0.base) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))))) (forall ((v_~head~0.base_125 (_ BitVec 32))) (or (forall ((v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_arrayElimArr_7 (Array (_ BitVec 32) (_ BitVec 32)))) (or (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_125 v_arrayElimArr_8) c_~head~0.base) .cse1)) (select (store |c_#length| v_~head~0.base_125 (_ bv8 32)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_125 v_arrayElimArr_7) c_~head~0.base) .cse1))) (not (= (select v_arrayElimArr_7 (_ bv4 32)) c_~head~0.base)))) (not (= c_~head~0.offset (select v_arrayElimArr_8 (_ bv4 32)))))) (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_125))))))) is different from false [2022-11-16 12:28:48,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:28:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514973429] [2022-11-16 12:28:48,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514973429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:48,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685429077] [2022-11-16 12:28:48,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:28:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:28:48,013 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:28:48,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 12:28:48,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:48,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:28:48,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:48,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:28:48,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:28:49,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:49,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:28:49,311 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-11-16 12:28:49,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2022-11-16 12:28:49,362 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:28:49,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:28:49,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:49,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:28:49,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:49,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:28:49,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:49,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-16 12:28:49,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:49,980 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-11-16 12:28:49,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2022-11-16 12:28:50,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:28:50,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:50,928 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 12:28:50,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-11-16 12:28:50,947 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:28:50,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 12:28:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:51,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:51,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2022-11-16 12:28:51,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:51,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2022-11-16 12:28:51,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2022-11-16 12:28:56,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [685429077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:56,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:56,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2022-11-16 12:28:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305481091] [2022-11-16 12:28:56,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:28:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:28:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:28:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=635, Unknown=8, NotChecked=50, Total=756 [2022-11-16 12:28:56,706 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:29:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:02,076 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2022-11-16 12:29:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:29:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2022-11-16 12:29:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:02,078 INFO L225 Difference]: With dead ends: 104 [2022-11-16 12:29:02,078 INFO L226 Difference]: Without dead ends: 104 [2022-11-16 12:29:02,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=147, Invalid=1320, Unknown=19, NotChecked=74, Total=1560 [2022-11-16 12:29:02,080 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:02,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 495 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 331 Unchecked, 0.9s Time] [2022-11-16 12:29:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-16 12:29:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2022-11-16 12:29:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 79 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2022-11-16 12:29:02,085 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 58 [2022-11-16 12:29:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:02,085 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2022-11-16 12:29:02,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:29:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2022-11-16 12:29:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:29:02,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:02,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:02,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:02,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:02,491 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:29:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash 569105948, now seen corresponding path program 1 times [2022-11-16 12:29:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:02,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727461199] [2022-11-16 12:29:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:02,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:02,493 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:02,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:29:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 12:29:03,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 12:29:03,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:03,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:03,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 60 [2022-11-16 12:29:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-16 12:29:04,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:04,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:04,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 56 [2022-11-16 12:29:04,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:05,080 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-11-16 12:29:05,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2022-11-16 12:29:06,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2022-11-16 12:29:06,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:29:07,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:07,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 81 [2022-11-16 12:29:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:29:08,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:10,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:10,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 75 [2022-11-16 12:29:10,567 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_137 (_ BitVec 32)) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (select v_arrayElimArr_15 (_ bv2 32)) (_ bv0 8))) (not (= (_ bv0 8) (select v_arrayElimArr_15 (_ bv1 32)))) (not (= (select v_arrayElimArr_15 (_ bv3 32)) (_ bv0 8))) (not (= (select v_arrayElimArr_15 (_ bv0 32)) (_ bv3 8))) (not (= (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_137 v_arrayElimArr_15) c_~head~0.base))) (concat (concat (concat (select .cse0 (bvadd c_~head~0.offset (_ bv3 32))) (select .cse0 (bvadd c_~head~0.offset (_ bv2 32)))) (select .cse0 (bvadd c_~head~0.offset (_ bv1 32)))) (select .cse0 c_~head~0.offset))) (_ bv2 32))))) is different from false [2022-11-16 12:29:10,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:10,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727461199] [2022-11-16 12:29:10,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727461199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:10,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783708809] [2022-11-16 12:29:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:10,572 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:29:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:29:10,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:29:10,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-16 12:29:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:11,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 12:29:11,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:11,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 12:29:11,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2022-11-16 12:29:13,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:13,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:14,300 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-11-16 12:29:14,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 12:29:14,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 67 [2022-11-16 12:29:15,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2022-11-16 12:29:15,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2022-11-16 12:29:16,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:16,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:16,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:16,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:16,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 34 [2022-11-16 12:29:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:29:16,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:17,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1783708809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:17,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:17,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2022-11-16 12:29:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918018602] [2022-11-16 12:29:17,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:29:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:29:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1425, Unknown=29, NotChecked=76, Total=1640 [2022-11-16 12:29:17,949 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:29:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:28,441 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-11-16 12:29:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:29:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-11-16 12:29:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:28,443 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:29:28,443 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 12:29:28,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=289, Invalid=2872, Unknown=35, NotChecked=110, Total=3306 [2022-11-16 12:29:28,445 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 121 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:28,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 658 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 423 Invalid, 0 Unknown, 239 Unchecked, 2.1s Time] [2022-11-16 12:29:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 12:29:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2022-11-16 12:29:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 79 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2022-11-16 12:29:28,450 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 59 [2022-11-16 12:29:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:28,450 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2022-11-16 12:29:28,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 12:29:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2022-11-16 12:29:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:29:28,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:28,452 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:28,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-11-16 12:29:28,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-16 12:29:28,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:28,855 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:29:28,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2137373797, now seen corresponding path program 1 times [2022-11-16 12:29:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:28,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565645687] [2022-11-16 12:29:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:28,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:28,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:28,857 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:29:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:29,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:29:29,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 12:29:29,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:29,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:29,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565645687] [2022-11-16 12:29:29,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565645687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:29,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:29,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:29:29,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154837702] [2022-11-16 12:29:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:29,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:29:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:29:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:29:29,240 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:29:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:29,265 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2022-11-16 12:29:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:29:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-11-16 12:29:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:29,267 INFO L225 Difference]: With dead ends: 84 [2022-11-16 12:29:29,267 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 12:29:29,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:29:29,267 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:29,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 12:29:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-16 12:29:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 77 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-11-16 12:29:29,271 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 59 [2022-11-16 12:29:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:29,272 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-11-16 12:29:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:29:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-11-16 12:29:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:29:29,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:29,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:29,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:29,474 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:29:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1015974627, now seen corresponding path program 1 times [2022-11-16 12:29:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:29,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017600931] [2022-11-16 12:29:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:29,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:29,476 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:29,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:29:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:29:30,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:30,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:30,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:30,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:30,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:31,308 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:29:31,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:29:31,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:29:32,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:29:32,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:29:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:32,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-16 12:29:32,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:32,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:29:33,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:33,056 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-11-16 12:29:33,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2022-11-16 12:29:33,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:29:35,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:35,075 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 12:29:35,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-11-16 12:29:35,112 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:29:35,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 12:29:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:29:35,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:38,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:38,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2022-11-16 12:29:38,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:38,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2022-11-16 12:29:38,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2022-11-16 12:29:54,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017600931] [2022-11-16 12:29:54,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017600931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [912984466] [2022-11-16 12:29:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:29:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:29:54,678 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:29:54,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-16 12:29:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:55,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:29:55,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:55,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:55,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:56,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:56,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:29:57,173 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:29:57,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:29:57,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:29:59,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:29:59,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:00,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-16 12:30:00,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:00,970 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-11-16 12:30:00,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2022-11-16 12:30:01,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:30:01,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:01,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:30:05,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:05,128 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 12:30:05,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2022-11-16 12:30:05,215 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:30:05,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 12:30:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:30:06,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:08,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:08,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2022-11-16 12:30:08,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:08,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2022-11-16 12:30:08,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2022-11-16 12:30:09,237 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd c_~head~0.offset (_ bv4 32)))) (and (forall ((v_~head~0.base_155 (_ BitVec 32))) (or (forall ((v_arrayElimArr_23 (Array (_ BitVec 32) (_ BitVec 32)))) (or (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_155 v_arrayElimArr_23) c_~head~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))) (not (= c_~head~0.offset (select v_arrayElimArr_23 (_ bv4 32)))))) (not (= (select |c_#valid| v_~head~0.base_155) (_ bv0 1))))) (forall ((v_~head~0.base_155 (_ BitVec 32))) (or (forall ((v_arrayElimArr_23 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.base (select v_arrayElimArr_22 (_ bv4 32)))) (forall ((v_ArrVal_3125 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_155 v_arrayElimArr_23) c_~head~0.base) .cse1)) (select (store |c_#length| v_~head~0.base_155 v_ArrVal_3125) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_155 v_arrayElimArr_22) c_~head~0.base) .cse1)))))) (not (= c_~head~0.offset (select v_arrayElimArr_23 (_ bv4 32)))))) (not (= (select |c_#valid| v_~head~0.base_155) (_ bv0 1))))))) is different from false [2022-11-16 12:30:09,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [912984466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:30:09,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:09,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 29 [2022-11-16 12:30:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144504917] [2022-11-16 12:30:09,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:09,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:30:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:30:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1222, Unknown=14, NotChecked=70, Total=1406 [2022-11-16 12:30:09,254 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:17,983 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2022-11-16 12:30:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:30:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2022-11-16 12:30:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:17,985 INFO L225 Difference]: With dead ends: 97 [2022-11-16 12:30:17,985 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 12:30:17,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=178, Invalid=1960, Unknown=28, NotChecked=90, Total=2256 [2022-11-16 12:30:17,987 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:17,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 691 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 322 Unchecked, 2.2s Time] [2022-11-16 12:30:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 12:30:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2022-11-16 12:30:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 80 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:30:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2022-11-16 12:30:17,991 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 61 [2022-11-16 12:30:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:17,992 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2022-11-16 12:30:17,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2022-11-16 12:30:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:30:17,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:17,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:18,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:18,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-11-16 12:30:18,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:30:18,407 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:30:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1021799568, now seen corresponding path program 2 times [2022-11-16 12:30:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:18,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921001957] [2022-11-16 12:30:18,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:30:18,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:18,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:18,409 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:18,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:30:18,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:30:18,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:18,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:30:18,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:19,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:21,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:21,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:22,753 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 12:30:22,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 29 [2022-11-16 12:30:23,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:30:25,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:25,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2022-11-16 12:30:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:30:25,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:28,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:28,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-16 12:30:28,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:28,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921001957] [2022-11-16 12:30:28,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921001957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:30:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [995614640] [2022-11-16 12:30:28,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:30:28,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:30:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:30:28,784 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:30:28,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-16 12:30:29,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:30:29,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:29,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 12:30:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:29,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:30:30,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:34,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:34,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:35,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:35,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-11-16 12:30:35,403 INFO L321 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-11-16 12:30:35,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 12:30:36,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-16 12:30:38,158 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:30:38,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2022-11-16 12:30:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:30:38,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:39,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:39,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-16 12:30:39,602 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_167 (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_167 v_arrayElimArr_27) c_~head~0.base) (bvadd c_~head~0.offset (_ bv4 32))) (_ bv0 32))) (not (= (select |c_#valid| v_~head~0.base_167) (_ bv0 1))) (not (= (select v_arrayElimArr_27 (_ bv4 32)) c_~head~0.base)))) is different from false [2022-11-16 12:30:39,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [995614640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:30:39,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:39,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 35 [2022-11-16 12:30:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522473143] [2022-11-16 12:30:39,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 12:30:39,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 12:30:39,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1436, Unknown=6, NotChecked=76, Total=1640 [2022-11-16 12:30:39,613 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:30:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:49,629 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2022-11-16 12:30:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:30:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 61 [2022-11-16 12:30:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:49,631 INFO L225 Difference]: With dead ends: 103 [2022-11-16 12:30:49,631 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 12:30:49,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=311, Invalid=2988, Unknown=11, NotChecked=112, Total=3422 [2022-11-16 12:30:49,633 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 51 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:49,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 789 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 318 Invalid, 0 Unknown, 208 Unchecked, 3.2s Time] [2022-11-16 12:30:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 12:30:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-16 12:30:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 94 states have internal predecessors, (99), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:30:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-11-16 12:30:49,644 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 61 [2022-11-16 12:30:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:49,644 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-11-16 12:30:49,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:30:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-11-16 12:30:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:30:49,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:49,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:49,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-16 12:30:49,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:50,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:50,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:30:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:50,046 INFO L85 PathProgramCache]: Analyzing trace with hash -357187888, now seen corresponding path program 3 times [2022-11-16 12:30:50,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:50,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868660237] [2022-11-16 12:30:50,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:30:50,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:50,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:50,048 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:50,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:30:51,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:30:51,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:51,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 12:30:51,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:51,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:30:51,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:52,503 INFO L321 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2022-11-16 12:30:52,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-16 12:30:54,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:54,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:30:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:55,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:30:55,364 INFO L321 Elim1Store]: treesize reduction 128, result has 26.0 percent of original size [2022-11-16 12:30:55,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 65 [2022-11-16 12:30:57,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:57,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:30:58,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:58,688 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-11-16 12:30:58,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 53 [2022-11-16 12:30:58,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:58,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:58,909 INFO L321 Elim1Store]: treesize reduction 98, result has 29.0 percent of original size [2022-11-16 12:30:58,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 95 [2022-11-16 12:30:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:59,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:31:03,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:03,724 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:31:03,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-16 12:31:05,977 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:31:05,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 51 [2022-11-16 12:31:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:07,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:12,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:12,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 47 [2022-11-16 12:31:12,129 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:12,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 44 [2022-11-16 12:31:12,240 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_31 (Array (_ BitVec 32) (_ BitVec 32))) (v_~head~0.base_173 (_ BitVec 32)) (v_arrayElimArr_32 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (select (store |c_#valid| v_~head~0.base_173 (_ bv1 1)) (let ((.cse1 (bvadd c_~head~0.offset (_ bv4 32)))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| v_~head~0.base_173 v_arrayElimArr_31))) (select .cse0 (select (select .cse0 c_~head~0.base) .cse1))) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_173 v_arrayElimArr_32) c_~head~0.base) .cse1))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_173))) (not (= c_~head~0.offset (select v_arrayElimArr_32 (_ bv4 32)))) (not (= (select v_arrayElimArr_31 (_ bv4 32)) c_~head~0.base)))) is different from false [2022-11-16 12:31:12,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:12,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868660237] [2022-11-16 12:31:12,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868660237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:31:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [581203407] [2022-11-16 12:31:12,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:31:12,250 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:31:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:31:12,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:31:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-16 12:31:14,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:31:14,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:31:14,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 94 conjunts are in the unsatisfiable core [2022-11-16 12:31:14,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:14,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:31:15,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:31:17,199 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:31:17,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:31:17,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:31:20,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:31:20,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:31:22,089 INFO L321 Elim1Store]: treesize reduction 80, result has 37.0 percent of original size [2022-11-16 12:31:22,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 67 [2022-11-16 12:31:22,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2022-11-16 12:31:26,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:31:26,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:31:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:27,922 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-11-16 12:31:27,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 79 [2022-11-16 12:31:27,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:27,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-16 12:31:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:28,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:28,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:28,220 INFO L321 Elim1Store]: treesize reduction 88, result has 38.9 percent of original size [2022-11-16 12:31:28,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 119 [2022-11-16 12:31:28,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:28,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:31:36,032 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 12:31:36,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 145 [2022-11-16 12:31:40,250 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:31:40,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 70 [2022-11-16 12:31:40,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:31:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:44,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:57,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:57,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 131 [2022-11-16 12:31:57,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:57,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 126 [2022-11-16 12:31:58,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [581203407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:31:58,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:31:58,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 53 [2022-11-16 12:31:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462537598] [2022-11-16 12:31:58,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:31:58,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 12:31:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 12:31:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4587, Unknown=15, NotChecked=138, Total=5112 [2022-11-16 12:31:58,613 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 54 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 48 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:32:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:07,433 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-16 12:32:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:32:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 48 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 65 [2022-11-16 12:32:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:07,435 INFO L225 Difference]: With dead ends: 113 [2022-11-16 12:32:07,435 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:32:07,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=558, Invalid=6052, Unknown=36, NotChecked=160, Total=6806 [2022-11-16 12:32:07,442 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:07,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 557 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 223 Invalid, 0 Unknown, 252 Unchecked, 2.2s Time] [2022-11-16 12:32:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:32:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2022-11-16 12:32:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 98 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:32:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2022-11-16 12:32:07,446 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 65 [2022-11-16 12:32:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:07,447 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2022-11-16 12:32:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 48 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:32:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2022-11-16 12:32:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:32:07,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:07,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:07,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:07,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:07,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:07,863 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insert_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insert_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-11-16 12:32:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -357187887, now seen corresponding path program 3 times [2022-11-16 12:32:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:07,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965793704] [2022-11-16 12:32:07,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:32:07,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:07,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:07,865 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1efbf5-a872-4e6f-bc38-fecb89220fbc/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:32:08,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:32:08,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:32:09,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 12:32:09,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:09,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:32:09,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:32:10,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:32:10,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:32:11,630 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 12:32:11,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-16 12:32:11,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:32:13,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:32:13,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:32:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:32:15,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-16 12:32:15,139 INFO L321 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2022-11-16 12:32:15,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:32:15,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,308 INFO L321 Elim1Store]: treesize reduction 6, result has 70.0 percent of original size [2022-11-16 12:32:15,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2022-11-16 12:32:17,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:32:17,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-16 12:32:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:19,420 INFO L321 Elim1Store]: treesize reduction 44, result has 49.4 percent of original size [2022-11-16 12:32:19,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 58 [2022-11-16 12:32:19,810 INFO L321 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2022-11-16 12:32:19,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 83 [2022-11-16 12:32:20,091 INFO L321 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2022-11-16 12:32:20,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 30 [2022-11-16 12:32:20,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 22 [2022-11-16 12:32:20,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 90 treesize of output 74 [2022-11-16 12:32:43,577 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 233 DAG size of output: 176 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:32:43,578 INFO L321 Elim1Store]: treesize reduction 300, result has 56.5 percent of original size [2022-11-16 12:32:43,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 367 treesize of output 579 [2022-11-16 12:32:44,334 INFO L217 Elim1Store]: Index analysis took 685 ms [2022-11-16 12:32:51,887 WARN L233 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 253 DAG size of output: 170 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 12:32:51,888 INFO L321 Elim1Store]: treesize reduction 374, result has 44.6 percent of original size [2022-11-16 12:32:51,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 15 new quantified variables, introduced 66 case distinctions, treesize of input 381 treesize of output 572