./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:01,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:01,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:01,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:01,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:01,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:01,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:01,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:01,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:01,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:01,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:01,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:01,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:01,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:01,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:01,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:01,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:01,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:01,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:01,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:01,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:01,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:01,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:01,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:01,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:01,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:01,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:01,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:01,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:01,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:01,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:01,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:01,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:01,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:01,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:01,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:01,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:01,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:01,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:01,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:01,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:01,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:34:01,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:01,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:01,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:01,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:01,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:01,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:01,902 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:01,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:01,903 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:34:01,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:34:01,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:01,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:34:01,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:01,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:34:01,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:34:01,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:34:01,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:01,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:34:01,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:34:01,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:01,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:01,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:01,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:01,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:01,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:01,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:01,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:34:01,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:34:01,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:01,911 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_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-11-09 09:34:02,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:02,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:02,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:02,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:02,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:02,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-09 09:34:02,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/41d191deb/1943f3c21ba7478581286f1bcbbdba05/FLAG5973420a0 [2021-11-09 09:34:02,979 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:02,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-09 09:34:03,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/41d191deb/1943f3c21ba7478581286f1bcbbdba05/FLAG5973420a0 [2021-11-09 09:34:03,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/41d191deb/1943f3c21ba7478581286f1bcbbdba05 [2021-11-09 09:34:03,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:03,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:34:03,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:03,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:03,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:03,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:03" (1/1) ... [2021-11-09 09:34:03,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bad9724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:03, skipping insertion in model container [2021-11-09 09:34:03,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:03" (1/1) ... [2021-11-09 09:34:03,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:03,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:03,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:03,864 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 09:34:03,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59171002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:03, skipping insertion in model container [2021-11-09 09:34:03,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:03,866 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:34:03,869 INFO L168 Benchmark]: Toolchain (without parser) took 630.72 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 48.0 MB in the beginning and 78.6 MB in the end (delta: -30.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:34:03,870 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:34:03,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.53 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 78.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:34:03,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 65.8 MB in the beginning and 65.7 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 627.53 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 78.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:06,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:06,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:06,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:06,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:06,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:06,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:06,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:06,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:06,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:06,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:06,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:06,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:06,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:06,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:06,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:06,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:06,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:06,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:06,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:06,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:06,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:06,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:06,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:06,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:06,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:06,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:06,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:06,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:06,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:06,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:06,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:06,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:06,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:06,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:06,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:06,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:06,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:06,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:06,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:06,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:06,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:34:06,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:06,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:06,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:06,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:06,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:06,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:06,720 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:06,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:06,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:34:06,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:34:06,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:06,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:34:06,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:06,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:34:06,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:34:06,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:34:06,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:06,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:34:06,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:34:06,723 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:34:06,724 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:34:06,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:06,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:06,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:06,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:06,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:06,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:06,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:06,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:34:06,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:34:06,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:06,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:34:06,727 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_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-11-09 09:34:07,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:07,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:07,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:07,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:07,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:07,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-09 09:34:07,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/9dc9fda9a/3a700ab3061a4b3caa458384b31b94b4/FLAGf4070fcc4 [2021-11-09 09:34:08,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:08,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/sv-benchmarks/c/memsafety/test-0102-1.i [2021-11-09 09:34:08,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/9dc9fda9a/3a700ab3061a4b3caa458384b31b94b4/FLAGf4070fcc4 [2021-11-09 09:34:08,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/data/9dc9fda9a/3a700ab3061a4b3caa458384b31b94b4 [2021-11-09 09:34:08,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:08,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:34:08,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:08,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:08,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:08,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:08" (1/1) ... [2021-11-09 09:34:08,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ece3203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:08, skipping insertion in model container [2021-11-09 09:34:08,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:08" (1/1) ... [2021-11-09 09:34:08,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:08,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:08,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:08,976 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:34:08,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:09,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:09,086 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:34:09,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:09,223 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:34:09,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09 WrapperNode [2021-11-09 09:34:09,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:09,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:34:09,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:34:09,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:34:09,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:34:09,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:34:09,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:34:09,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:34:09,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (1/1) ... [2021-11-09 09:34:09,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:09,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:34:09,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:34:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:34:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:34:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:34:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:34:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:34:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:34:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:34:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:34:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:34:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-09 09:34:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-09 09:34:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2021-11-09 09:34:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_top [2021-11-09 09:34:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_sub [2021-11-09 09:34:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2021-11-09 09:34:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_top [2021-11-09 09:34:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure create_top [2021-11-09 09:34:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:34:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:34:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:34:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:34:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:34:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:34:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:34:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:34:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:34:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:34:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:34:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:34:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:34:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:34:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:34:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:34:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:34:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:34:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:34:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:34:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:34:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:34:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:34:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:34:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:34:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:34:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:34:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:34:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:34:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:34:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:34:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:34:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:34:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:34:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:34:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:34:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:34:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:34:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:34:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:34:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:34:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:34:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:34:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:34:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:34:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:34:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:34:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:34:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:34:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:34:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:34:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:34:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:34:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:34:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:34:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:34:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:34:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:34:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:34:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:34:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:34:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:34:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:34:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:34:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:34:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:34:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:34:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:34:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:34:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:34:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:34:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:34:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:34:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:34:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:34:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:34:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:34:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:34:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:34:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:34:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:34:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:34:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:34:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:34:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:34:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:34:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:34:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:34:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:34:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:34:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:34:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:34:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:34:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:34:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:34:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:34:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:34:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:34:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:34:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:34:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:34:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:34:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:34:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 09:34:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-09 09:34:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:34:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-09 09:34:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:34:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2021-11-09 09:34:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:34:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_top [2021-11-09 09:34:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure insert_sub [2021-11-09 09:34:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:34:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:34:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2021-11-09 09:34:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure insert_top [2021-11-09 09:34:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure create_top [2021-11-09 09:34:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:34:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:34:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:34:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:34:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:34:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:34:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 09:34:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:34:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:34:10,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:34:10,419 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:34:10,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:10 BoogieIcfgContainer [2021-11-09 09:34:10,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:34:10,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:34:10,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:34:10,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:34:10,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:34:08" (1/3) ... [2021-11-09 09:34:10,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1328bc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:10, skipping insertion in model container [2021-11-09 09:34:10,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:09" (2/3) ... [2021-11-09 09:34:10,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1328bc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:10, skipping insertion in model container [2021-11-09 09:34:10,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:10" (3/3) ... [2021-11-09 09:34:10,431 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2021-11-09 09:34:10,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:34:10,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-09 09:34:10,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:34:10,497 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:34:10,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-09 09:34:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 09:34:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:34:10,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:10,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:10,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash -901593530, now seen corresponding path program 1 times [2021-11-09 09:34:10,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:10,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173122818] [2021-11-09 09:34:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:10,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:10,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:10,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:10,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:34:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:10,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:34:10,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:10,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:10,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:10,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173122818] [2021-11-09 09:34:10,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173122818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:10,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:10,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:34:10,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458019980] [2021-11-09 09:34:10,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:34:10,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:10,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:34:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:34:10,974 INFO L87 Difference]: Start difference. First operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:11,013 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-11-09 09:34:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:34:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 09:34:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:11,028 INFO L225 Difference]: With dead ends: 106 [2021-11-09 09:34:11,029 INFO L226 Difference]: Without dead ends: 103 [2021-11-09 09:34:11,031 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:34:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-09 09:34:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-09 09:34:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 50 states have (on average 1.68) internal successors, (84), 80 states have internal predecessors, (84), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 09:34:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-11-09 09:34:11,106 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 14 [2021-11-09 09:34:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:11,107 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-11-09 09:34:11,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-11-09 09:34:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:34:11,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:11,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:11,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:11,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:11,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -901533948, now seen corresponding path program 1 times [2021-11-09 09:34:11,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:11,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757450566] [2021-11-09 09:34:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:11,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:11,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:11,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:11,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:34:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:34:11,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:11,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:11,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:11,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:11,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757450566] [2021-11-09 09:34:11,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757450566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:11,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:11,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:34:11,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104042260] [2021-11-09 09:34:11,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:11,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:11,809 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:12,257 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-11-09 09:34:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 09:34:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:12,262 INFO L225 Difference]: With dead ends: 109 [2021-11-09 09:34:12,262 INFO L226 Difference]: Without dead ends: 109 [2021-11-09 09:34:12,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-09 09:34:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-11-09 09:34:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 80 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 09:34:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-11-09 09:34:12,279 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 14 [2021-11-09 09:34:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:12,280 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-11-09 09:34:12,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-11-09 09:34:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:34:12,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:12,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:12,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:12,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -901533947, now seen corresponding path program 1 times [2021-11-09 09:34:12,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:12,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850108554] [2021-11-09 09:34:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:12,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:12,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:12,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:34:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:12,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:34:12,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:12,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:12,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:13,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:13,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850108554] [2021-11-09 09:34:13,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850108554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:13,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:13,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:34:13,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651348162] [2021-11-09 09:34:13,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:34:13,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:34:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:34:13,207 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:14,063 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-11-09 09:34:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 09:34:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:14,067 INFO L225 Difference]: With dead ends: 107 [2021-11-09 09:34:14,067 INFO L226 Difference]: Without dead ends: 107 [2021-11-09 09:34:14,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-09 09:34:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-11-09 09:34:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 81 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 09:34:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-11-09 09:34:14,081 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 14 [2021-11-09 09:34:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:14,082 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-11-09 09:34:14,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-11-09 09:34:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:34:14,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:14,084 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:14,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:14,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:14,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting insert_subErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash -732602635, now seen corresponding path program 1 times [2021-11-09 09:34:14,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:14,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734955045] [2021-11-09 09:34:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:14,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:14,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:14,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:34:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:14,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:34:14,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:14,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:14,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:14,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:14,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734955045] [2021-11-09 09:34:14,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734955045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:14,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:14,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:34:14,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259347062] [2021-11-09 09:34:14,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:14,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:14,673 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:14,826 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-11-09 09:34:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-09 09:34:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:14,829 INFO L225 Difference]: With dead ends: 104 [2021-11-09 09:34:14,829 INFO L226 Difference]: Without dead ends: 104 [2021-11-09 09:34:14,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-09 09:34:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-11-09 09:34:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 80 states have internal predecessors, (85), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 09:34:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-11-09 09:34:14,848 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 19 [2021-11-09 09:34:14,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:14,849 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-11-09 09:34:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-11-09 09:34:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:34:14,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:14,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:14,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:15,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:15,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting insert_subErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -732602634, now seen corresponding path program 1 times [2021-11-09 09:34:15,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:15,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278766770] [2021-11-09 09:34:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:15,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:15,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:15,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:34:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:15,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:15,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:15,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:15,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:15,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278766770] [2021-11-09 09:34:15,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278766770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:15,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:15,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:34:15,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727109355] [2021-11-09 09:34:15,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:15,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:15,539 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:15,850 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-11-09 09:34:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:15,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-09 09:34:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:15,853 INFO L225 Difference]: With dead ends: 103 [2021-11-09 09:34:15,853 INFO L226 Difference]: Without dead ends: 103 [2021-11-09 09:34:15,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-09 09:34:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-09 09:34:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 79 states have internal predecessors, (84), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-09 09:34:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-11-09 09:34:15,864 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 19 [2021-11-09 09:34:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:15,864 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-11-09 09:34:15,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-11-09 09:34:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:34:15,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:15,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:15,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:16,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:16,079 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851786, now seen corresponding path program 1 times [2021-11-09 09:34:16,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:16,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932041295] [2021-11-09 09:34:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:16,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:16,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:16,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:34:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:34:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:16,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:16,526 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-09 09:34:16,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 [2021-11-09 09:34:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:16,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:17,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:17,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932041295] [2021-11-09 09:34:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932041295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:17,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:17,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-09 09:34:17,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913409256] [2021-11-09 09:34:17,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:34:17,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:34:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:34:17,036 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:17,913 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2021-11-09 09:34:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:34:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 09:34:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:17,915 INFO L225 Difference]: With dead ends: 111 [2021-11-09 09:34:17,915 INFO L226 Difference]: Without dead ends: 111 [2021-11-09 09:34:17,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:34:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-09 09:34:17,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-11-09 09:34:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 83 states have internal predecessors, (89), 14 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 09:34:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2021-11-09 09:34:17,927 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 22 [2021-11-09 09:34:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:17,927 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2021-11-09 09:34:17,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2021-11-09 09:34:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:34:17,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:17,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:17,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:18,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:18,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851787, now seen corresponding path program 1 times [2021-11-09 09:34:18,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:18,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116133353] [2021-11-09 09:34:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:18,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:18,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:18,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:34:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:18,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 09:34:18,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:18,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:18,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:18,771 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:34:18,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 30 [2021-11-09 09:34:18,780 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:34:18,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2021-11-09 09:34:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:18,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:20,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:20,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116133353] [2021-11-09 09:34:20,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116133353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:20,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:20,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-09 09:34:20,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691261850] [2021-11-09 09:34:20,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:34:20,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:34:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:34:20,945 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:28,204 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2021-11-09 09:34:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:34:28,206 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 09:34:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:28,208 INFO L225 Difference]: With dead ends: 126 [2021-11-09 09:34:28,208 INFO L226 Difference]: Without dead ends: 126 [2021-11-09 09:34:28,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:34:28,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-09 09:34:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2021-11-09 09:34:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 94 states have internal predecessors, (99), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-09 09:34:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-11-09 09:34:28,219 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 22 [2021-11-09 09:34:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:28,219 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-11-09 09:34:28,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-11-09 09:34:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 09:34:28,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:28,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:28,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:28,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:28,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239143, now seen corresponding path program 1 times [2021-11-09 09:34:28,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:28,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570476000] [2021-11-09 09:34:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:28,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:28,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:28,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:34:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:28,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:34:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:28,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:28,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:28,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570476000] [2021-11-09 09:34:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570476000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:28,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:34:28,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849091516] [2021-11-09 09:34:28,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:28,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:28,960 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:29,290 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-11-09 09:34:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-11-09 09:34:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:29,292 INFO L225 Difference]: With dead ends: 124 [2021-11-09 09:34:29,292 INFO L226 Difference]: Without dead ends: 124 [2021-11-09 09:34:29,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-09 09:34:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-09 09:34:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 67 states have (on average 1.462686567164179) internal successors, (98), 93 states have internal predecessors, (98), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-09 09:34:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-11-09 09:34:29,301 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 25 [2021-11-09 09:34:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:29,301 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-11-09 09:34:29,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-11-09 09:34:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 09:34:29,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:29,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:29,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-09 09:34:29,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:29,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239142, now seen corresponding path program 1 times [2021-11-09 09:34:29,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:29,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599905659] [2021-11-09 09:34:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:29,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:29,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:29,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:34:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:29,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:34:29,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:30,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:30,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:31,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:31,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599905659] [2021-11-09 09:34:31,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599905659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:31,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:31,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-11-09 09:34:31,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633103082] [2021-11-09 09:34:31,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:34:31,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:34:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:34:31,196 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:33,720 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-11-09 09:34:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:34:33,722 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-11-09 09:34:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:33,724 INFO L225 Difference]: With dead ends: 136 [2021-11-09 09:34:33,724 INFO L226 Difference]: Without dead ends: 136 [2021-11-09 09:34:33,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:34:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-09 09:34:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2021-11-09 09:34:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 98 states have internal predecessors, (109), 17 states have call successors, (17), 15 states have call predecessors, (17), 14 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-09 09:34:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-11-09 09:34:33,739 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 25 [2021-11-09 09:34:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:33,740 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-11-09 09:34:33,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-11-09 09:34:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:34:33,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:33,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:33,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:33,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr2REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674979, now seen corresponding path program 1 times [2021-11-09 09:34:33,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:33,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519586915] [2021-11-09 09:34:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:33,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:33,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:33,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:34:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:34,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:34:34,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:34,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:34,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:34,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:34,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519586915] [2021-11-09 09:34:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519586915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:34,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-09 09:34:34,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793740785] [2021-11-09 09:34:34,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:34:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:34:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:34,572 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:35,094 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-09 09:34:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:34:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-09 09:34:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:35,096 INFO L225 Difference]: With dead ends: 140 [2021-11-09 09:34:35,097 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 09:34:35,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 09:34:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-11-09 09:34:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 103 states have internal predecessors, (116), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-09 09:34:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-11-09 09:34:35,104 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 26 [2021-11-09 09:34:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:35,105 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-11-09 09:34:35,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-11-09 09:34:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:34:35,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:35,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:35,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:35,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:35,311 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr3REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674978, now seen corresponding path program 1 times [2021-11-09 09:34:35,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:35,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891157656] [2021-11-09 09:34:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:35,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:35,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:35,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:35,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:34:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:35,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:34:35,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:35,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:35,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:36,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:36,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891157656] [2021-11-09 09:34:36,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891157656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:36,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:36,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-09 09:34:36,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501044562] [2021-11-09 09:34:36,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:34:36,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:34:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:34:36,479 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:38,144 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2021-11-09 09:34:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:34:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-09 09:34:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:38,152 INFO L225 Difference]: With dead ends: 138 [2021-11-09 09:34:38,152 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 09:34:38,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:34:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 09:34:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-11-09 09:34:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 103 states have internal predecessors, (112), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-09 09:34:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2021-11-09 09:34:38,164 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 26 [2021-11-09 09:34:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:38,165 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2021-11-09 09:34:38,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2021-11-09 09:34:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 09:34:38,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:38,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:38,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:38,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:38,387 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __list_addErr6REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:34:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 750402304, now seen corresponding path program 1 times [2021-11-09 09:34:38,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:38,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746959455] [2021-11-09 09:34:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:38,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:38,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:38,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:34:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-09 09:34:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:38,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:39,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:39,151 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-09 09:34:39,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:34:39,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:34:39,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:34:39,608 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-11-09 09:34:39,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-11-09 09:34:39,848 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-09 09:34:39,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-11-09 09:34:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:40,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:40,203 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-11-09 09:34:40,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-11-09 09:34:42,513 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_insert_sub_~head.base) (bvadd (_ bv4 32) c_insert_sub_~head.offset)) c_insert_sub_~head.base)) is different from false [2021-11-09 09:34:44,614 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))) (= |c_insert_sub_#in~head.base| (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) |c_insert_sub_#in~head.base|) (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|))))) is different from false [2021-11-09 09:34:46,690 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= c_create_sub_list_~sub.base (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))))) is different from false [2021-11-09 09:34:48,780 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) is different from false [2021-11-09 09:34:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:51,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:51,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746959455] [2021-11-09 09:34:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746959455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:51,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:51,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 21 [2021-11-09 09:34:51,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222368588] [2021-11-09 09:34:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:34:51,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:34:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=269, Unknown=4, NotChecked=140, Total=462 [2021-11-09 09:34:51,646 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:53,911 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_create_sub_list_#in~sub.base|)) (_ bv1 1))) (= c_create_sub_list_~sub.base (select (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_create_sub_list_~sub.base)) (_ bv1 1)))) is different from false [2021-11-09 09:35:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:13,547 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2021-11-09 09:35:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:35:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-09 09:35:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:13,551 INFO L225 Difference]: With dead ends: 169 [2021-11-09 09:35:13,551 INFO L226 Difference]: Without dead ends: 169 [2021-11-09 09:35:13,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=79, Invalid=442, Unknown=5, NotChecked=230, Total=756 [2021-11-09 09:35:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-09 09:35:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2021-11-09 09:35:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 127 states have internal predecessors, (136), 23 states have call successors, (23), 22 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-09 09:35:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2021-11-09 09:35:13,563 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 28 [2021-11-09 09:35:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:13,564 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2021-11-09 09:35:13,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:35:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2021-11-09 09:35:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 09:35:13,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:13,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:13,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:13,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:13,782 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __list_addErr7REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-11-09 09:35:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 750402305, now seen corresponding path program 1 times [2021-11-09 09:35:13,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:13,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250458762] [2021-11-09 09:35:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:13,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:13,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:13,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:13,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:35:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:14,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-09 09:35:14,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:14,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:35:14,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:35:14,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:35:14,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:35:14,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:35:14,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:35:14,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:35:14,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:35:14,887 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-09 09:35:14,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-09 09:35:14,954 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:35:14,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2021-11-09 09:35:15,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:35:15,462 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-11-09 09:35:15,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 134 treesize of output 92 [2021-11-09 09:35:15,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:35:15,630 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-11-09 09:35:15,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 86 treesize of output 44 [2021-11-09 09:35:16,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:35:16,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-11-09 09:35:16,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:35:16,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-11-09 09:35:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:16,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:35,844 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_insert_sub_#in~head.base|) .cse3)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_insert_sub_#in~head.base|) .cse3))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12)) |c_insert_sub_#in~head.base|) (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))))) is different from false [2021-11-09 09:35:58,179 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))))) is different from false [2021-11-09 09:36:03,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:36:03,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250458762] [2021-11-09 09:36:03,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-09 09:36:03,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549316851] [2021-11-09 09:36:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:03,760 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-09 09:36:03,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/cvc4 [2021-11-09 09:36:03,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-09 09:36:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-09 09:36:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:04,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-09 09:36:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:36:04,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:04,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:04,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:04,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:04,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:36:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:04,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:36:04,917 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:36:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-09 09:36:04,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 09:36:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:05,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:05,107 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-11-09 09:36:05,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 87 [2021-11-09 09:36:05,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:05,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:05,135 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-11-09 09:36:05,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 39 [2021-11-09 09:36:05,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-09 09:36:05,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-09 09:36:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:06,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:36:09,331 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_insert_sub_~head.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_insert_sub_~head.base) .cse3) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_insert_sub_~head.base) .cse3))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20)) c_insert_sub_~head.base) (bvadd (_ bv4 32) c_insert_sub_~head.offset)))) (bvule .cse4 (bvadd .cse4 (_ bv4 32)))))) is different from false [2021-11-09 09:36:34,013 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_create_sub_list_~sub.base) .cse3)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_create_sub_list_~sub.base) .cse3))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-11-09 09:36:36,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-11-09 09:36:41,454 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification that was a NOOP. DAG size: 2104 [2021-11-09 09:36:41,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-09 09:36:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017890240] [2021-11-09 09:36:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:41,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:36:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:36:41,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:36:41,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:36:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:41,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-09 09:36:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:36:41,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:42,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:42,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:36:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:42,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:36:42,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:42,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-09 09:36:43,055 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:36:43,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2021-11-09 09:36:43,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-09 09:36:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:43,474 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-11-09 09:36:43,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 134 treesize of output 92 [2021-11-09 09:36:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:36:43,691 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-11-09 09:36:43,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 86 treesize of output 44 [2021-11-09 09:36:43,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:36:43,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-11-09 09:36:43,949 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:36:43,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-11-09 09:36:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:44,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:38:07,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:07,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:38:08,536 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-09 09:38:08,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 75596 treesize of output 75595 [2021-11-09 09:38:09,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-09 09:38:09,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:09,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 09:38:09,163 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-09 09:38:09,163 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 09:38:09,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-11-09 09:38:09,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,174 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,175 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr2REQUIRES_VIOLATION [2021-11-09 09:38:09,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr3REQUIRES_VIOLATION [2021-11-09 09:38:09,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-11-09 09:38:09,177 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-11-09 09:38:09,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-11-09 09:38:09,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-11-09 09:38:09,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-11-09 09:38:09,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr2REQUIRES_VIOLATION [2021-11-09 09:38:09,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr3REQUIRES_VIOLATION [2021-11-09 09:38:09,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-11-09 09:38:09,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr0REQUIRES_VIOLATION [2021-11-09 09:38:09,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr1REQUIRES_VIOLATION [2021-11-09 09:38:09,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr2REQUIRES_VIOLATION [2021-11-09 09:38:09,180 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr3REQUIRES_VIOLATION [2021-11-09 09:38:09,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,181 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-09 09:38:09,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:38:09,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:38:09,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-09 09:38:09,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/cvc4 --incremental --print-success --lang smt [2021-11-09 09:38:09,790 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:09,793 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:38:09,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:38:09 BoogieIcfgContainer [2021-11-09 09:38:09,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:38:09,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:38:09,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:38:09,808 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:38:09,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:10" (3/4) ... [2021-11-09 09:38:09,812 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:38:09,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:38:09,814 INFO L168 Benchmark]: Toolchain (without parser) took 241490.18 ms. Allocated memory was 79.7 MB in the beginning and 438.3 MB in the end (delta: 358.6 MB). Free memory was 64.9 MB in the beginning and 364.2 MB in the end (delta: -299.3 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:38:09,814 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:38:09,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 898.48 ms. Allocated memory is still 79.7 MB. Free memory was 64.7 MB in the beginning and 51.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:38:09,815 INFO L168 Benchmark]: Boogie Preprocessor took 160.22 ms. Allocated memory is still 79.7 MB. Free memory was 51.1 MB in the beginning and 47.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:38:09,816 INFO L168 Benchmark]: RCFGBuilder took 1035.26 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 45.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:38:09,817 INFO L168 Benchmark]: TraceAbstraction took 239382.32 ms. Allocated memory was 79.7 MB in the beginning and 438.3 MB in the end (delta: 358.6 MB). Free memory was 44.8 MB in the beginning and 364.2 MB in the end (delta: -319.4 MB). Peak memory consumption was 256.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:38:09,817 INFO L168 Benchmark]: Witness Printer took 5.75 ms. Allocated memory is still 438.3 MB. Free memory is still 364.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:38:09,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 898.48 ms. Allocated memory is still 79.7 MB. Free memory was 64.7 MB in the beginning and 51.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 160.22 ms. Allocated memory is still 79.7 MB. Free memory was 51.1 MB in the beginning and 47.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1035.26 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 45.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 239382.32 ms. Allocated memory was 79.7 MB in the beginning and 438.3 MB in the end (delta: 358.6 MB). Free memory was 44.8 MB in the beginning and 364.2 MB in the end (delta: -319.4 MB). Peak memory consumption was 256.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.75 ms. Allocated memory is still 438.3 MB. Free memory is still 364.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L602] struct list_head top = { &(top), &(top) }; [L603] CALL create_top(&top) [L597] CALL insert_top(top) [L587] struct top_list *top = malloc(sizeof(*top)); [L588] COND FALSE !(!top) [L590] CALL create_sub_list(&top->sub1) [L579] sub->prev = sub [L580] sub->next = sub [L582] CALL insert_sub(sub) [L571] struct sub_list *sub = malloc(sizeof(*sub)); [L572] COND FALSE !(!sub) [L574] sub->number = 0 [L575] CALL list_add_tail(&sub->link, head) [L538] EXPR head->prev [L538] CALL __list_add(new, head->prev, head) [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 130 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 239.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1168 SDtfs, 339 SDslu, 4795 SDs, 0 SdLazy, 2625 SolverSat, 78 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 385 SyntacticMatches, 21 SemanticMatches, 125 ConstructedPredicates, 5 IntricatePredicates, 3 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 34.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=12, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 69.4s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 511 ConstructedInterpolants, 31 QuantifiedInterpolants, 3198 SizeOfPredicates, 81 NumberOfNonLiveVariables, 2148 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 09:38:09,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94c7b26-a454-4b94-bc83-63858a8eecc2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN