./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8 --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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:40:22,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:40:22,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:40:22,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:40:22,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:40:22,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:40:22,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:40:22,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:40:22,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:40:22,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:40:22,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:40:22,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:40:22,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:40:22,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:40:22,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:40:22,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:40:22,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:40:22,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:40:22,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:40:22,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:40:22,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:40:22,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:40:22,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:40:22,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:40:22,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:40:22,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:40:22,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:40:22,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:40:22,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:40:22,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:40:22,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:40:22,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:40:22,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:40:22,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:40:22,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:40:22,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:40:22,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:40:22,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:40:22,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:40:22,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:40:22,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:40:22,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:40:22,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:40:22,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:40:22,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:40:22,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:40:22,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:40:22,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:40:22,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:40:22,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:40:22,856 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:40:22,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:40:22,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:40:22,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:40:22,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:40:22,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:40:22,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:40:22,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:40:22,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:40:22,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:40:22,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:40:22,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:40:22,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:40:22,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:40:22,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:40:22,860 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2022-12-13 21:40:23,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:40:23,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:40:23,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:40:23,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:40:23,043 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:40:23,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-12-13 21:40:25,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:40:25,742 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:40:25,742 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-12-13 21:40:25,749 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/b3695274c/1a3c2463b5c84500be6afe1cb1bfc05c/FLAG915586da0 [2022-12-13 21:40:26,141 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/b3695274c/1a3c2463b5c84500be6afe1cb1bfc05c [2022-12-13 21:40:26,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:40:26,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:40:26,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:40:26,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:40:26,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:40:26,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:40:26" (1/1) ... [2022-12-13 21:40:26,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4284794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:26, skipping insertion in model container [2022-12-13 21:40:26,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:40:26" (1/1) ... [2022-12-13 21:40:26,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:40:26,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:40:26,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:40:26,352 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 21:40:26,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13135d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:26, skipping insertion in model container [2022-12-13 21:40:26,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:40:26,353 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:40:26,354 INFO L158 Benchmark]: Toolchain (without parser) took 209.16ms. Allocated memory is still 127.9MB. Free memory was 92.2MB in the beginning and 80.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:40:26,354 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:40:26,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.43ms. Allocated memory is still 127.9MB. Free memory was 91.9MB in the beginning and 80.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:40:26,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.43ms. Allocated memory is still 127.9MB. Free memory was 91.9MB in the beginning and 80.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8 --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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:40:27,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:40:27,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:40:27,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:40:27,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:40:27,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:40:27,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:40:27,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:40:27,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:40:27,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:40:27,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:40:27,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:40:27,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:40:27,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:40:27,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:40:27,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:40:27,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:40:27,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:40:27,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:40:27,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:40:27,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:40:27,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:40:27,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:40:27,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:40:27,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:40:27,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:40:27,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:40:27,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:40:27,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:40:27,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:40:27,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:40:27,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:40:27,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:40:27,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:40:27,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:40:27,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:40:27,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:40:27,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:40:27,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:40:27,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:40:27,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:40:27,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:40:27,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:40:27,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:40:27,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:40:27,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:40:27,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:40:27,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:40:27,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:40:27,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:40:27,859 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:40:27,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:40:27,859 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:40:27,859 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:40:27,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:40:27,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:40:27,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:40:27,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:40:27,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:40:27,861 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:40:27,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:40:27,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:40:27,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:40:27,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:40:27,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:40:27,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:40:27,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:40:27,862 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:40:27,863 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2022-12-13 21:40:28,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:40:28,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:40:28,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:40:28,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:40:28,139 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:40:28,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-12-13 21:40:30,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:40:30,859 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:40:30,859 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-12-13 21:40:30,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/0dd3bf761/a698aad35cd84e4b80fcd0d809aeb693/FLAG425b8a4e1 [2022-12-13 21:40:30,878 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/data/0dd3bf761/a698aad35cd84e4b80fcd0d809aeb693 [2022-12-13 21:40:30,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:40:30,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:40:30,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:40:30,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:40:30,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:40:30,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:40:30" (1/1) ... [2022-12-13 21:40:30,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caa6073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:30, skipping insertion in model container [2022-12-13 21:40:30,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:40:30" (1/1) ... [2022-12-13 21:40:30,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:40:30,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:40:31,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:40:31,104 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:40:31,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:40:31,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:40:31,135 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:40:31,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:40:31,198 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:40:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31 WrapperNode [2022-12-13 21:40:31,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:40:31,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:40:31,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:40:31,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:40:31,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,243 INFO L138 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2022-12-13 21:40:31,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:40:31,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:40:31,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:40:31,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:40:31,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:40:31,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:40:31,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:40:31,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:40:31,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (1/1) ... [2022-12-13 21:40:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:40:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:40:31,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:40:31,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:40:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:40:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:40:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:40:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:40:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:40:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:40:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:40:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 21:40:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:40:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:40:31,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:40:31,419 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:40:31,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:40:31,836 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:40:31,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:40:31,843 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:40:31,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:40:31 BoogieIcfgContainer [2022-12-13 21:40:31,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:40:31,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:40:31,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:40:31,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:40:31,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:40:30" (1/3) ... [2022-12-13 21:40:31,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e9b677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:40:31, skipping insertion in model container [2022-12-13 21:40:31,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:40:31" (2/3) ... [2022-12-13 21:40:31,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e9b677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:40:31, skipping insertion in model container [2022-12-13 21:40:31,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:40:31" (3/3) ... [2022-12-13 21:40:31,854 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-1.i [2022-12-13 21:40:31,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:40:31,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-12-13 21:40:31,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:40:31,910 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e606e5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:40:31,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-12-13 21:40:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 21:40:31,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:31,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 21:40:31,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2022-12-13 21:40:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903219522] [2022-12-13 21:40:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:31,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 21:40:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:31,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:40:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:32,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:32,100 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:40:32,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:40:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:32,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:32,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:32,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903219522] [2022-12-13 21:40:32,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903219522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:32,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:32,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:40:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470482806] [2022-12-13 21:40:32,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:32,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:40:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:40:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:40:32,151 INFO L87 Difference]: Start difference. First operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:32,440 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2022-12-13 21:40:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:40:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 21:40:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:32,451 INFO L225 Difference]: With dead ends: 148 [2022-12-13 21:40:32,451 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 21:40:32,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:32,455 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 209 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:32,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 94 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:40:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 21:40:32,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 93. [2022-12-13 21:40:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 92 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2022-12-13 21:40:32,490 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 4 [2022-12-13 21:40:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:32,490 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2022-12-13 21:40:32,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2022-12-13 21:40:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 21:40:32,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:32,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 21:40:32,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:40:32,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:32,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-12-13 21:40:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:32,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697569876] [2022-12-13 21:40:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:32,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:32,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:32,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 21:40:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:32,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:40:32,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:32,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:32,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:40:32,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:40:32,904 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:32,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:32,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:32,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:32,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697569876] [2022-12-13 21:40:32,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697569876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:32,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:32,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:40:32,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662249266] [2022-12-13 21:40:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:40:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:32,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:40:32,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:40:32,922 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:33,321 INFO L93 Difference]: Finished difference Result 236 states and 253 transitions. [2022-12-13 21:40:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:40:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 21:40:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:33,324 INFO L225 Difference]: With dead ends: 236 [2022-12-13 21:40:33,324 INFO L226 Difference]: Without dead ends: 236 [2022-12-13 21:40:33,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:33,325 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 239 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:33,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 97 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:40:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-13 21:40:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 107. [2022-12-13 21:40:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.8208955223880596) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2022-12-13 21:40:33,331 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 4 [2022-12-13 21:40:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:33,331 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2022-12-13 21:40:33,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2022-12-13 21:40:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 21:40:33,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:33,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:40:33,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 21:40:33,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:33,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2022-12-13 21:40:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362652609] [2022-12-13 21:40:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:33,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:33,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 21:40:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:33,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:40:33,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:33,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:33,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:33,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:33,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362652609] [2022-12-13 21:40:33,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362652609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:33,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:33,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:40:33,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407414670] [2022-12-13 21:40:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:33,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:40:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:40:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:33,682 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:33,818 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2022-12-13 21:40:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:40:33,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 21:40:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:33,820 INFO L225 Difference]: With dead ends: 136 [2022-12-13 21:40:33,820 INFO L226 Difference]: Without dead ends: 136 [2022-12-13 21:40:33,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:33,822 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 75 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:33,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 87 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:40:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-13 21:40:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2022-12-13 21:40:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 104 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-12-13 21:40:33,827 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 5 [2022-12-13 21:40:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:33,827 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-12-13 21:40:33,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-12-13 21:40:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 21:40:33,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:33,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:40:33,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 21:40:34,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:34,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2022-12-13 21:40:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:34,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952426123] [2022-12-13 21:40:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:34,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:34,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:34,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 21:40:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:34,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:40:34,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:34,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:34,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:34,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952426123] [2022-12-13 21:40:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952426123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:34,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:34,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:40:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084026950] [2022-12-13 21:40:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:40:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:40:34,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:34,147 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:34,379 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2022-12-13 21:40:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:40:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 21:40:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:34,381 INFO L225 Difference]: With dead ends: 180 [2022-12-13 21:40:34,381 INFO L226 Difference]: Without dead ends: 180 [2022-12-13 21:40:34,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:34,382 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 72 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:34,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:40:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-12-13 21:40:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 108. [2022-12-13 21:40:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.732394366197183) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2022-12-13 21:40:34,390 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 5 [2022-12-13 21:40:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:34,390 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2022-12-13 21:40:34,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2022-12-13 21:40:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 21:40:34,391 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:34,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:34,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 21:40:34,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:34,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2022-12-13 21:40:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:34,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334007815] [2022-12-13 21:40:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:34,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:34,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:34,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:34,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 21:40:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:34,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:40:34,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:34,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:34,721 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:40:34,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:40:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:34,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:34,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:34,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334007815] [2022-12-13 21:40:34,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334007815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:34,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:34,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:40:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994146889] [2022-12-13 21:40:34,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:34,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:40:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:34,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:40:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:34,731 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:34,884 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2022-12-13 21:40:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:40:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 21:40:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:34,885 INFO L225 Difference]: With dead ends: 151 [2022-12-13 21:40:34,885 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 21:40:34,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:34,887 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 69 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:34,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 144 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:40:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 21:40:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 104. [2022-12-13 21:40:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2022-12-13 21:40:34,893 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 9 [2022-12-13 21:40:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:34,893 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2022-12-13 21:40:34,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2022-12-13 21:40:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 21:40:34,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:34,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:34,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 21:40:35,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:35,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2022-12-13 21:40:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:35,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306571710] [2022-12-13 21:40:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:35,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:35,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:35,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 21:40:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:35,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:40:35,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:35,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:35,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:40:35,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:40:35,277 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:35,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:35,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:35,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306571710] [2022-12-13 21:40:35,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306571710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:35,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:35,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:40:35,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406665506] [2022-12-13 21:40:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:35,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:40:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:40:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:40:35,291 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:35,565 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2022-12-13 21:40:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:40:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 21:40:35,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:35,567 INFO L225 Difference]: With dead ends: 200 [2022-12-13 21:40:35,567 INFO L226 Difference]: Without dead ends: 200 [2022-12-13 21:40:35,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:40:35,568 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 187 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:35,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 166 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:40:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-13 21:40:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 100. [2022-12-13 21:40:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.591549295774648) internal successors, (113), 99 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2022-12-13 21:40:35,574 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 9 [2022-12-13 21:40:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:35,575 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2022-12-13 21:40:35,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2022-12-13 21:40:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:40:35,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:35,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:35,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 21:40:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:35,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2022-12-13 21:40:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:35,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838789238] [2022-12-13 21:40:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:35,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:35,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:35,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 21:40:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:35,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:40:35,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:35,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:35,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:35,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-13 21:40:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:35,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:35,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:35,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838789238] [2022-12-13 21:40:35,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838789238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:35,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:35,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:40:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13769210] [2022-12-13 21:40:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:35,889 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:36,128 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2022-12-13 21:40:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 21:40:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:36,128 INFO L225 Difference]: With dead ends: 109 [2022-12-13 21:40:36,129 INFO L226 Difference]: Without dead ends: 109 [2022-12-13 21:40:36,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:36,129 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 9 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:36,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 216 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:40:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-13 21:40:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2022-12-13 21:40:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 102 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2022-12-13 21:40:36,132 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 13 [2022-12-13 21:40:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:36,132 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2022-12-13 21:40:36,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2022-12-13 21:40:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:40:36,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:36,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:36,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 21:40:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:36,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2022-12-13 21:40:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:36,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322680020] [2022-12-13 21:40:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:36,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:36,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:36,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 21:40:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:36,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:40:36,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:36,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:36,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:36,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:36,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 21:40:36,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:40:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:36,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:36,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:36,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322680020] [2022-12-13 21:40:36,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322680020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:36,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:36,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:40:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888674663] [2022-12-13 21:40:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:36,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:40:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:36,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:40:36,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:40:36,554 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:36,913 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2022-12-13 21:40:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 21:40:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:36,915 INFO L225 Difference]: With dead ends: 104 [2022-12-13 21:40:36,915 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 21:40:36,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:40:36,916 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 4 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:36,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 218 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:40:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 21:40:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-12-13 21:40:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2022-12-13 21:40:36,920 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 13 [2022-12-13 21:40:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:36,920 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2022-12-13 21:40:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2022-12-13 21:40:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 21:40:36,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:36,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:36,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 21:40:37,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:37,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1897191059, now seen corresponding path program 1 times [2022-12-13 21:40:37,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408408680] [2022-12-13 21:40:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:37,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:37,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:37,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 21:40:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:37,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:40:37,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:40:37,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 21:40:37,356 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:37,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:37,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:37,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:37,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408408680] [2022-12-13 21:40:37,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408408680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:37,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:37,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:40:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250698751] [2022-12-13 21:40:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:40:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:40:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:40:37,415 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:37,645 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2022-12-13 21:40:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 21:40:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:37,647 INFO L225 Difference]: With dead ends: 133 [2022-12-13 21:40:37,647 INFO L226 Difference]: Without dead ends: 133 [2022-12-13 21:40:37,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:40:37,648 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 413 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:37,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 65 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:40:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-13 21:40:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2022-12-13 21:40:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-12-13 21:40:37,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 15 [2022-12-13 21:40:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:37,650 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-12-13 21:40:37,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-12-13 21:40:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 21:40:37,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:37,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:37,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 21:40:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:37,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:37,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash -734113802, now seen corresponding path program 1 times [2022-12-13 21:40:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:37,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718972502] [2022-12-13 21:40:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:37,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:37,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:37,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 21:40:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:37,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:40:37,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:38,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:38,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 21:40:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:38,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:38,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:38,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718972502] [2022-12-13 21:40:38,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718972502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:38,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:38,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:40:38,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506768736] [2022-12-13 21:40:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:38,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:38,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:38,043 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:38,237 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2022-12-13 21:40:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:40:38,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 21:40:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:38,238 INFO L225 Difference]: With dead ends: 137 [2022-12-13 21:40:38,238 INFO L226 Difference]: Without dead ends: 137 [2022-12-13 21:40:38,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:38,239 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 168 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:38,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 174 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:40:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-13 21:40:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2022-12-13 21:40:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2022-12-13 21:40:38,241 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 17 [2022-12-13 21:40:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:38,241 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2022-12-13 21:40:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2022-12-13 21:40:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 21:40:38,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:38,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:38,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 21:40:38,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:38,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash -734113798, now seen corresponding path program 1 times [2022-12-13 21:40:38,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565129384] [2022-12-13 21:40:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:38,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:38,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:38,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 21:40:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:40:38,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:38,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:38,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:38,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:40:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:38,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:38,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:38,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565129384] [2022-12-13 21:40:38,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565129384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:38,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:38,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:40:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168259260] [2022-12-13 21:40:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:38,696 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:38,984 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2022-12-13 21:40:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:40:38,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 21:40:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:38,985 INFO L225 Difference]: With dead ends: 129 [2022-12-13 21:40:38,985 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 21:40:38,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:38,986 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:38,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 158 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:40:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 21:40:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2022-12-13 21:40:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-12-13 21:40:38,988 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 17 [2022-12-13 21:40:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:38,989 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-12-13 21:40:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-12-13 21:40:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 21:40:38,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:38,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:38,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 21:40:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:39,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash -734113797, now seen corresponding path program 1 times [2022-12-13 21:40:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777990101] [2022-12-13 21:40:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:39,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:39,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:39,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 21:40:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:40:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:39,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:39,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:39,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:39,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 21:40:39,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:40:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:39,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:39,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:39,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777990101] [2022-12-13 21:40:39,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777990101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:39,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:39,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:40:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152919899] [2022-12-13 21:40:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:39,473 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:39,849 INFO L93 Difference]: Finished difference Result 201 states and 219 transitions. [2022-12-13 21:40:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:40:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 21:40:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:39,850 INFO L225 Difference]: With dead ends: 201 [2022-12-13 21:40:39,850 INFO L226 Difference]: Without dead ends: 201 [2022-12-13 21:40:39,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:39,851 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 149 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:39,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 221 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:40:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-13 21:40:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 106. [2022-12-13 21:40:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 105 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2022-12-13 21:40:39,853 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 17 [2022-12-13 21:40:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:39,853 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2022-12-13 21:40:39,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2022-12-13 21:40:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:40:39,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:39,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:39,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 21:40:40,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:40,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2022-12-13 21:40:40,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:40,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387804792] [2022-12-13 21:40:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:40,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:40,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:40,060 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:40,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 21:40:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:40,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:40:40,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:40,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:40,228 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 21:40:40,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 21:40:40,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:40,340 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:40:40,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-12-13 21:40:40,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-12-13 21:40:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:40:40,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:40,444 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_261) |c_ULTIMATE.start_create_data_~data~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-12-13 21:40:40,455 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) v_ArrVal_261) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-12-13 21:40:40,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:40,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-12-13 21:40:40,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-12-13 21:40:40,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 21:40:44,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:44,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387804792] [2022-12-13 21:40:44,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387804792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:40:44,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:40:44,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-12-13 21:40:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818193774] [2022-12-13 21:40:44,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:40:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:40:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:40:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=78, Unknown=3, NotChecked=38, Total=156 [2022-12-13 21:40:44,559 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:45,157 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2022-12-13 21:40:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:40:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 21:40:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:45,159 INFO L225 Difference]: With dead ends: 154 [2022-12-13 21:40:45,159 INFO L226 Difference]: Without dead ends: 154 [2022-12-13 21:40:45,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=45, Invalid=92, Unknown=3, NotChecked=42, Total=182 [2022-12-13 21:40:45,160 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 69 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:45,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 527 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 356 Invalid, 0 Unknown, 202 Unchecked, 0.5s Time] [2022-12-13 21:40:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-13 21:40:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 105. [2022-12-13 21:40:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.5) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-12-13 21:40:45,163 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 18 [2022-12-13 21:40:45,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:45,163 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-12-13 21:40:45,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-12-13 21:40:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:40:45,164 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:45,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:45,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 21:40:45,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:45,365 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 50233869, now seen corresponding path program 1 times [2022-12-13 21:40:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124065446] [2022-12-13 21:40:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:45,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:45,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 21:40:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:45,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:40:45,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:45,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:45,493 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:45,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:45,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:45,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:45,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:45,651 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:40:45,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-13 21:40:45,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 21:40:45,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-13 21:40:45,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:40:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:45,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:46,046 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))) (bvule (bvadd .cse2 (_ bv4 32) .cse1) (bvadd .cse2 (_ bv8 32) .cse1)))))) is different from false [2022-12-13 21:40:46,086 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))))))) is different from false [2022-12-13 21:40:46,134 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-12-13 21:40:46,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:46,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-12-13 21:40:46,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2022-12-13 21:40:46,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:46,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-13 21:40:46,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:46,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-12-13 21:40:46,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:40:46,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-12-13 21:40:46,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:40:46,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-12-13 21:40:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 21:40:46,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124065446] [2022-12-13 21:40:46,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124065446] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:40:46,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:40:46,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-12-13 21:40:46,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629109411] [2022-12-13 21:40:46,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:40:46,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:40:46,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:46,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:40:46,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=124, Unknown=3, NotChecked=72, Total=240 [2022-12-13 21:40:46,279 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:49,264 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-12-13 21:40:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:40:49,265 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 21:40:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:49,265 INFO L225 Difference]: With dead ends: 160 [2022-12-13 21:40:49,266 INFO L226 Difference]: Without dead ends: 160 [2022-12-13 21:40:49,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=92, Invalid=297, Unknown=3, NotChecked=114, Total=506 [2022-12-13 21:40:49,266 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 68 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:49,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 885 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 677 Invalid, 4 Unknown, 302 Unchecked, 1.8s Time] [2022-12-13 21:40:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-12-13 21:40:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 110. [2022-12-13 21:40:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2022-12-13 21:40:49,268 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 18 [2022-12-13 21:40:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:49,268 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2022-12-13 21:40:49,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2022-12-13 21:40:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 21:40:49,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:49,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:49,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 21:40:49,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:49,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash -10622392, now seen corresponding path program 1 times [2022-12-13 21:40:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:49,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074702529] [2022-12-13 21:40:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:49,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:49,476 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:49,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 21:40:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:49,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:40:49,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:49,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:49,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:49,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:40:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:49,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:49,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:49,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074702529] [2022-12-13 21:40:49,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074702529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:49,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:49,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:40:49,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769281193] [2022-12-13 21:40:49,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:49,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:49,664 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:49,978 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2022-12-13 21:40:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:40:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 21:40:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:49,979 INFO L225 Difference]: With dead ends: 146 [2022-12-13 21:40:49,979 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 21:40:49,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:49,980 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:49,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 160 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:40:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 21:40:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2022-12-13 21:40:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-12-13 21:40:49,984 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 20 [2022-12-13 21:40:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:49,984 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-12-13 21:40:49,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-12-13 21:40:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 21:40:49,985 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:49,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:49,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 21:40:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:50,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -10622391, now seen corresponding path program 1 times [2022-12-13 21:40:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605268910] [2022-12-13 21:40:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:50,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:50,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:50,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:50,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 21:40:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:50,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:40:50,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:50,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:50,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:50,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:50,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:40:50,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 21:40:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:50,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:50,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:50,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605268910] [2022-12-13 21:40:50,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605268910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:50,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:50,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:40:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039060753] [2022-12-13 21:40:50,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:50,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:40:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:40:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:40:50,527 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:51,004 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2022-12-13 21:40:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:40:51,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 21:40:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:51,005 INFO L225 Difference]: With dead ends: 203 [2022-12-13 21:40:51,005 INFO L226 Difference]: Without dead ends: 203 [2022-12-13 21:40:51,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:40:51,006 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 165 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:51,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 187 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:40:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-13 21:40:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 113. [2022-12-13 21:40:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 86 states have (on average 1.441860465116279) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2022-12-13 21:40:51,008 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 20 [2022-12-13 21:40:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2022-12-13 21:40:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2022-12-13 21:40:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 21:40:51,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:51,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:51,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 21:40:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:51,210 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1375969503, now seen corresponding path program 1 times [2022-12-13 21:40:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:51,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774437683] [2022-12-13 21:40:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:51,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:51,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:51,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 21:40:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:51,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 21:40:51,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:51,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:51,309 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:51,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:51,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:51,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:40:51,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 21:40:51,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 21:40:51,639 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 21:40:51,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-12-13 21:40:51,645 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 21:40:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:51,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:40:51,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:40:51,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774437683] [2022-12-13 21:40:51,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774437683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:51,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:51,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:40:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039981903] [2022-12-13 21:40:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:51,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:40:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:40:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:40:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:40:51,699 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:40:53,546 INFO L93 Difference]: Finished difference Result 261 states and 276 transitions. [2022-12-13 21:40:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 21:40:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-13 21:40:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:40:53,548 INFO L225 Difference]: With dead ends: 261 [2022-12-13 21:40:53,548 INFO L226 Difference]: Without dead ends: 261 [2022-12-13 21:40:53,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:40:53,548 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 509 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:40:53,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 439 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 21:40:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-12-13 21:40:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 128. [2022-12-13 21:40:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.386138613861386) internal successors, (140), 127 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2022-12-13 21:40:53,551 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 23 [2022-12-13 21:40:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:40:53,551 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2022-12-13 21:40:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2022-12-13 21:40:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 21:40:53,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:40:53,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:53,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 21:40:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:53,753 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:40:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 382685369, now seen corresponding path program 2 times [2022-12-13 21:40:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:40:53,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196993902] [2022-12-13 21:40:53,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:40:53,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:40:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:40:53,758 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:40:53,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 21:40:53,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:40:53,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:40:53,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 21:40:53,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:40:53,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:40:53,945 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:40:53,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:40:53,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:40:53,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:53,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:40:54,110 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:40:54,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-13 21:40:54,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 21:40:54,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2022-12-13 21:40:54,268 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:40:54,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2022-12-13 21:40:54,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-13 21:40:54,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:40:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:40:54,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:40:55,412 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse5 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)) (.cse4 (bvadd (_ bv8 32) .cse0 .cse5))) (or (and (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))))) (not (bvule .cse4 (select |c_#length| .cse2))) (not (bvule (bvadd (_ bv4 32) .cse0 .cse5) .cse4)))))) is different from false [2022-12-13 21:40:56,240 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (and (forall ((v_ArrVal_444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_444))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse2 (bvadd (_ bv8 32) .cse0 .cse1))) (or (not (bvule (bvadd (_ bv4 32) .cse0 .cse1) .cse2)) (forall ((v_ArrVal_445 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse7 v_ArrVal_445))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule .cse2 (select |c_#length| .cse3))) (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse4 .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse3 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))))))))))))) (forall ((v_ArrVal_444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_444))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse9 (bvadd (_ bv8 32) .cse8 .cse1))) (or (not (bvule (bvadd (_ bv4 32) .cse8 .cse1) .cse9)) (forall ((v_ArrVal_445 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (select (select (store |c_#memory_$Pointer$.base| .cse7 v_ArrVal_445) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (select (store .cse11 .cse12 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd (_ bv8 32) .cse10 .cse1) (bvadd .cse10 .cse1 (_ bv12 32))))) (not (bvule .cse9 (select |c_#length| .cse12)))))))))))))) is different from false [2022-12-13 21:40:56,394 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (and (forall ((v_ArrVal_444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_444))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse1 (bvadd (_ bv8 32) .cse0))) (or (not (bvule (bvadd (_ bv4 32) .cse0) .cse1)) (forall ((v_ArrVal_445 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_445))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (or (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse2 .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))) (not (bvule .cse1 (select |c_#length| .cse3)))))))))))) (forall ((v_ArrVal_444 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_444))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse8 (bvadd (_ bv8 32) .cse7))) (or (not (bvule (bvadd (_ bv4 32) .cse7) .cse8)) (forall ((v_ArrVal_445 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_445) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (or (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (store .cse10 .cse11 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv8 32) .cse9) (bvadd .cse9 (_ bv12 32))))) (not (bvule .cse8 (select |c_#length| .cse11)))))))))))))) is different from false [2022-12-13 21:40:56,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:56,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 152 [2022-12-13 21:40:56,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:40:56,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 86 [2022-12-13 21:40:56,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 730 treesize of output 610 [2022-12-13 21:40:56,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2320 treesize of output 2146 [2022-12-13 21:40:56,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2030 treesize of output 1870 [2022-12-13 21:40:56,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1667 treesize of output 1587 [2022-12-13 21:40:56,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1876 treesize of output 1572 [2022-12-13 21:40:56,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1510 treesize of output 1350 [2022-12-13 21:41:19,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:41:19,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 142 [2022-12-13 21:41:19,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:41:19,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 86 [2022-12-13 21:41:19,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-12-13 21:41:19,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 422 treesize of output 356 [2022-12-13 21:41:20,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 249 [2022-12-13 21:41:20,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 176 [2022-12-13 21:41:20,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 219 [2022-12-13 21:41:55,965 WARN L233 SmtUtils]: Spent 32.99s on a formula simplification. DAG size of input: 131 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:41:56,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:41:56,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 243 treesize of output 306 [2022-12-13 21:41:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 21:41:59,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:41:59,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196993902] [2022-12-13 21:41:59,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196993902] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:41:59,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:41:59,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-12-13 21:41:59,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002615524] [2022-12-13 21:41:59,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:41:59,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 21:41:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:41:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 21:41:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=243, Unknown=7, NotChecked=102, Total=420 [2022-12-13 21:41:59,254 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:17,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:42:19,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:42:21,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:42:23,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:42:25,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:42:27,435 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)) (.cse11 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)) (.cse8 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse13 (bvadd (_ bv4 32) .cse8 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|)) (.cse3 (bvadd (_ bv4 32) .cse8 .cse11)) (.cse1 (select |c_#length| .cse4))) (let ((.cse0 (bvadd (_ bv8 32) .cse8 .cse11)) (.cse2 (bvule .cse3 .cse1)) (.cse6 (bvule (bvadd .cse8 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse13)) (.cse5 (bvule .cse13 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|))) (.cse7 (bvule (bvadd .cse8 .cse11) .cse3))) (and (bvule .cse0 .cse1) .cse2 (bvule .cse3 .cse0) (not (= .cse4 |c_ULTIMATE.start_create_data_~data~0#1.base|)) .cse5 .cse6 (or (not .cse2) (not .cse7) (and (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse8 (select (select (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)))) (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (bvule (bvadd (_ bv4 32) .cse8 .cse10) (bvadd (_ bv8 32) .cse8 .cse10)))))) (= .cse11 (_ bv0 32)) (= (bvadd (select |c_#valid| |c_ULTIMATE.start_create_data_~data~0#1.base|) (_ bv1 1)) (_ bv0 1)) (= (_ bv80 32) .cse1) (or (and (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (bvule (bvadd (_ bv4 32) .cse8 .cse12) (bvadd (_ bv8 32) .cse8 .cse12)))) (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))))) (not .cse6) (not .cse5)) .cse7))))) is different from false [2022-12-13 21:42:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:35,509 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2022-12-13 21:42:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:42:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-13 21:42:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:35,511 INFO L225 Difference]: With dead ends: 186 [2022-12-13 21:42:35,511 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 21:42:35,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=209, Invalid=787, Unknown=12, NotChecked=252, Total=1260 [2022-12-13 21:42:35,512 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 119 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 17 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:35,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 674 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 688 Invalid, 6 Unknown, 321 Unchecked, 23.4s Time] [2022-12-13 21:42:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 21:42:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 143. [2022-12-13 21:42:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 116 states have (on average 1.353448275862069) internal successors, (157), 142 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2022-12-13 21:42:35,515 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 23 [2022-12-13 21:42:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:35,516 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2022-12-13 21:42:35,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2022-12-13 21:42:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 21:42:35,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:35,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:35,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 21:42:35,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:35,718 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:42:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash -543267076, now seen corresponding path program 1 times [2022-12-13 21:42:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675956658] [2022-12-13 21:42:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:35,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:42:35,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 21:42:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:35,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:42:35,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:36,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:36,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:42:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:36,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:36,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675956658] [2022-12-13 21:42:36,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675956658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:36,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:36,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:42:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172032306] [2022-12-13 21:42:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:36,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:42:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:42:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:42:36,607 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:37,522 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2022-12-13 21:42:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:42:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 21:42:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:37,523 INFO L225 Difference]: With dead ends: 177 [2022-12-13 21:42:37,524 INFO L226 Difference]: Without dead ends: 177 [2022-12-13 21:42:37,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:42:37,524 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 156 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 169 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 21:42:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-13 21:42:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 155. [2022-12-13 21:42:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.421875) internal successors, (182), 154 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2022-12-13 21:42:37,527 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 25 [2022-12-13 21:42:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2022-12-13 21:42:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2022-12-13 21:42:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 21:42:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:37,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:37,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-13 21:42:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:37,731 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:42:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 338589996, now seen corresponding path program 1 times [2022-12-13 21:42:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:37,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788615281] [2022-12-13 21:42:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:37,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:37,737 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:42:37,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 21:42:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:37,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:42:37,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:38,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:39,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-13 21:42:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:39,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:39,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788615281] [2022-12-13 21:42:39,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788615281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:39,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:39,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:42:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321815103] [2022-12-13 21:42:39,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:39,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:42:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:42:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:42:39,245 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:40,557 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions. [2022-12-13 21:42:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:42:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 21:42:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:40,559 INFO L225 Difference]: With dead ends: 178 [2022-12-13 21:42:40,559 INFO L226 Difference]: Without dead ends: 178 [2022-12-13 21:42:40,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:42:40,560 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 248 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 144 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 21:42:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-13 21:42:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 156. [2022-12-13 21:42:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 129 states have (on average 1.4186046511627908) internal successors, (183), 155 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2022-12-13 21:42:40,563 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 26 [2022-12-13 21:42:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2022-12-13 21:42:40,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2022-12-13 21:42:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 21:42:40,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:40,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:40,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 21:42:40,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:40,766 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:42:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1906355454, now seen corresponding path program 1 times [2022-12-13 21:42:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791790960] [2022-12-13 21:42:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:40,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:40,771 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:42:40,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 21:42:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:40,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:42:40,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:40,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:42:41,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:41,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:42:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:41,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:41,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:41,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791790960] [2022-12-13 21:42:41,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791790960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:41,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:41,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:42:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301290953] [2022-12-13 21:42:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:41,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:42:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:42:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:42:41,592 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:42,958 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2022-12-13 21:42:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:42:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 21:42:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:42,959 INFO L225 Difference]: With dead ends: 177 [2022-12-13 21:42:42,960 INFO L226 Difference]: Without dead ends: 177 [2022-12-13 21:42:42,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:42:42,960 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 164 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 21:42:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-13 21:42:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 159. [2022-12-13 21:42:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 132 states have (on average 1.4090909090909092) internal successors, (186), 158 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2022-12-13 21:42:42,964 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 27 [2022-12-13 21:42:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:42,964 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2022-12-13 21:42:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2022-12-13 21:42:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 21:42:42,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:42,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:42,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 21:42:43,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:43,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:42:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823547, now seen corresponding path program 1 times [2022-12-13 21:42:43,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:43,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911597819] [2022-12-13 21:42:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:43,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:43,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:43,173 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:42:43,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 21:42:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:43,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 21:42:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:43,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:42:44,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:45,001 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 21:42:45,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-12-13 21:42:45,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:45,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:42:46,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:42:46,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-12-13 21:42:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:46,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:46,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911597819] [2022-12-13 21:42:46,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911597819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:46,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:42:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394282996] [2022-12-13 21:42:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:42:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:42:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:42:46,322 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:42:53,075 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2022-12-13 21:42:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 21:42:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 21:42:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:42:53,077 INFO L225 Difference]: With dead ends: 191 [2022-12-13 21:42:53,077 INFO L226 Difference]: Without dead ends: 191 [2022-12-13 21:42:53,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:42:53,079 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 372 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:42:53,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 402 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 21:42:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-12-13 21:42:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 164. [2022-12-13 21:42:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.3985507246376812) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2022-12-13 21:42:53,083 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 27 [2022-12-13 21:42:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:42:53,083 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2022-12-13 21:42:53,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2022-12-13 21:42:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 21:42:53,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:42:53,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:53,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 21:42:53,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:53,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:42:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823546, now seen corresponding path program 1 times [2022-12-13 21:42:53,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:42:53,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980229195] [2022-12-13 21:42:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:53,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:42:53,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:42:53,287 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:42:53,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 21:42:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:53,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 21:42:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:42:53,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:42:53,549 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:42:53,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:42:53,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:42:54,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:54,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:42:55,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 21:42:55,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 21:42:55,723 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 21:42:55,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2022-12-13 21:42:55,753 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 21:42:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:42:56,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:42:56,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:42:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980229195] [2022-12-13 21:42:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980229195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:56,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:42:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375971148] [2022-12-13 21:42:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:56,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:42:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:42:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:42:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:42:56,125 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:06,136 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2022-12-13 21:43:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 21:43:06,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 21:43:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:06,139 INFO L225 Difference]: With dead ends: 282 [2022-12-13 21:43:06,139 INFO L226 Difference]: Without dead ends: 282 [2022-12-13 21:43:06,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:43:06,140 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 664 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:06,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 449 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 21:43:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-13 21:43:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 174. [2022-12-13 21:43:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 148 states have (on average 1.4054054054054055) internal successors, (208), 173 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2022-12-13 21:43:06,143 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 27 [2022-12-13 21:43:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:06,143 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2022-12-13 21:43:06,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2022-12-13 21:43:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 21:43:06,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:06,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:06,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-13 21:43:06,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:06,344 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522897, now seen corresponding path program 1 times [2022-12-13 21:43:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:06,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124307497] [2022-12-13 21:43:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:06,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:06,346 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:06,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 21:43:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:06,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 21:43:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:07,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:43:07,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:43:07,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:43:08,865 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:43:08,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 18 [2022-12-13 21:43:09,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:43:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:09,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:43:09,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124307497] [2022-12-13 21:43:09,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124307497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:09,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:09,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:43:09,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540745048] [2022-12-13 21:43:09,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:43:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:43:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:43:09,195 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:14,997 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2022-12-13 21:43:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:43:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-13 21:43:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:15,000 INFO L225 Difference]: With dead ends: 198 [2022-12-13 21:43:15,000 INFO L226 Difference]: Without dead ends: 198 [2022-12-13 21:43:15,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2022-12-13 21:43:15,001 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 342 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:15,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 297 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 21:43:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-13 21:43:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2022-12-13 21:43:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 149 states have (on average 1.4093959731543624) internal successors, (210), 174 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 210 transitions. [2022-12-13 21:43:15,006 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 210 transitions. Word has length 28 [2022-12-13 21:43:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:15,006 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 210 transitions. [2022-12-13 21:43:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 210 transitions. [2022-12-13 21:43:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 21:43:15,007 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:15,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:15,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-13 21:43:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:15,209 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522896, now seen corresponding path program 1 times [2022-12-13 21:43:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:15,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801203909] [2022-12-13 21:43:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:15,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:15,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:15,214 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:15,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-13 21:43:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:15,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:43:15,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:15,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:43:15,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:15,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801203909] [2022-12-13 21:43:15,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801203909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:15,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:15,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:43:15,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30499534] [2022-12-13 21:43:15,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:15,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:43:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:15,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:43:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:43:15,998 INFO L87 Difference]: Start difference. First operand 175 states and 210 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:16,376 INFO L93 Difference]: Finished difference Result 170 states and 202 transitions. [2022-12-13 21:43:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:43:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-13 21:43:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:16,379 INFO L225 Difference]: With dead ends: 170 [2022-12-13 21:43:16,379 INFO L226 Difference]: Without dead ends: 170 [2022-12-13 21:43:16,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:43:16,380 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 56 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:16,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 50 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:43:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-13 21:43:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-12-13 21:43:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 169 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 202 transitions. [2022-12-13 21:43:16,386 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 202 transitions. Word has length 28 [2022-12-13 21:43:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:16,386 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 202 transitions. [2022-12-13 21:43:16,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 202 transitions. [2022-12-13 21:43:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 21:43:16,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:16,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:16,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-13 21:43:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:16,589 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1614814932, now seen corresponding path program 1 times [2022-12-13 21:43:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:16,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930104437] [2022-12-13 21:43:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:16,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:16,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:16,593 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:16,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-13 21:43:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:16,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:43:16,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:17,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:43:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:17,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:17,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930104437] [2022-12-13 21:43:17,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930104437] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:43:17,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:43:17,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 21:43:17,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381144692] [2022-12-13 21:43:17,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:43:17,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:43:17,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:17,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:43:17,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:43:17,732 INFO L87 Difference]: Start difference. First operand 170 states and 202 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:18,816 INFO L93 Difference]: Finished difference Result 185 states and 215 transitions. [2022-12-13 21:43:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:43:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-13 21:43:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:18,818 INFO L225 Difference]: With dead ends: 185 [2022-12-13 21:43:18,818 INFO L226 Difference]: Without dead ends: 185 [2022-12-13 21:43:18,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:43:18,819 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 26 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:18,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 585 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 21:43:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-12-13 21:43:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2022-12-13 21:43:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 162 states have (on average 1.3271604938271604) internal successors, (215), 182 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 215 transitions. [2022-12-13 21:43:18,824 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 215 transitions. Word has length 30 [2022-12-13 21:43:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:18,825 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 215 transitions. [2022-12-13 21:43:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 215 transitions. [2022-12-13 21:43:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 21:43:18,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:18,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:18,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-13 21:43:19,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:19,026 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -842646633, now seen corresponding path program 1 times [2022-12-13 21:43:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:19,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631698279] [2022-12-13 21:43:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:19,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:19,029 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-13 21:43:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:43:19,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:19,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:43:19,307 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:43:19,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:43:20,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:43:20,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 21:43:20,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:43:21,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-13 21:43:21,235 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:43:21,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-12-13 21:43:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:21,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:43:21,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631698279] [2022-12-13 21:43:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631698279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:21,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:21,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:43:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168090945] [2022-12-13 21:43:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:21,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:43:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:43:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:43:21,614 INFO L87 Difference]: Start difference. First operand 183 states and 215 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:28,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:43:31,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:43:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:35,342 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions. [2022-12-13 21:43:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:43:35,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-13 21:43:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:35,346 INFO L225 Difference]: With dead ends: 284 [2022-12-13 21:43:35,346 INFO L226 Difference]: Without dead ends: 284 [2022-12-13 21:43:35,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=251, Invalid=679, Unknown=0, NotChecked=0, Total=930 [2022-12-13 21:43:35,346 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 627 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:35,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 452 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 21:43:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-12-13 21:43:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 183. [2022-12-13 21:43:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 162 states have (on average 1.3148148148148149) internal successors, (213), 182 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 213 transitions. [2022-12-13 21:43:35,350 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 213 transitions. Word has length 30 [2022-12-13 21:43:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:35,350 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 213 transitions. [2022-12-13 21:43:35,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 213 transitions. [2022-12-13 21:43:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 21:43:35,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:35,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:35,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-12-13 21:43:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:35,552 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -842657618, now seen corresponding path program 1 times [2022-12-13 21:43:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:35,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660670349] [2022-12-13 21:43:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:35,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:35,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:35,558 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:35,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-13 21:43:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:35,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:43:35,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:35,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:43:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:35,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:43:35,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:35,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660670349] [2022-12-13 21:43:35,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660670349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:35,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:35,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:43:35,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309823865] [2022-12-13 21:43:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:35,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:43:35,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:43:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:43:35,879 INFO L87 Difference]: Start difference. First operand 183 states and 213 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:36,730 INFO L93 Difference]: Finished difference Result 199 states and 226 transitions. [2022-12-13 21:43:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:43:36,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-13 21:43:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:36,732 INFO L225 Difference]: With dead ends: 199 [2022-12-13 21:43:36,733 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 21:43:36,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:43:36,733 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 27 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:36,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 242 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 21:43:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 21:43:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 182. [2022-12-13 21:43:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 162 states have (on average 1.2962962962962963) internal successors, (210), 181 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2022-12-13 21:43:36,737 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 30 [2022-12-13 21:43:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:36,737 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2022-12-13 21:43:36,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2022-12-13 21:43:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 21:43:36,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:36,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:36,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-13 21:43:36,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:36,939 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash -352582234, now seen corresponding path program 1 times [2022-12-13 21:43:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:36,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260054789] [2022-12-13 21:43:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:36,946 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:36,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-12-13 21:43:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:37,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:43:37,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:37,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:43:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:37,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:43:37,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260054789] [2022-12-13 21:43:37,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260054789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:37,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:37,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:43:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978997634] [2022-12-13 21:43:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:43:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:43:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:43:37,809 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:43:39,022 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2022-12-13 21:43:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:43:39,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 21:43:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:43:39,024 INFO L225 Difference]: With dead ends: 197 [2022-12-13 21:43:39,024 INFO L226 Difference]: Without dead ends: 197 [2022-12-13 21:43:39,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:43:39,025 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 62 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:43:39,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 201 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 21:43:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-13 21:43:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 180. [2022-12-13 21:43:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 162 states have (on average 1.2592592592592593) internal successors, (204), 179 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2022-12-13 21:43:39,028 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 31 [2022-12-13 21:43:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:43:39,028 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2022-12-13 21:43:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2022-12-13 21:43:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:43:39,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:43:39,029 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:39,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-12-13 21:43:39,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:39,231 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:43:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash -822688907, now seen corresponding path program 1 times [2022-12-13 21:43:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:43:39,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205887704] [2022-12-13 21:43:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:39,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:43:39,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:43:39,237 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:43:39,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-13 21:43:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:39,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:43:39,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:40,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:43:40,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-12-13 21:43:47,543 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#list~0#1.base_21| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~mem21#1.base_9| (_ BitVec 32)) (v_ArrVal_931 (_ BitVec 1))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#list~0#1.base_21| v_ArrVal_931))) (and (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_main_#t~mem21#1.base_9| (_ bv0 1)) |v_ULTIMATE.start_main_~#list~0#1.base_21| (_ bv0 1))) (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_#t~mem21#1.base_9|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#list~0#1.base_21|))))) is different from true [2022-12-13 21:43:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:47,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:43:50,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-12-13 21:43:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:54,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:43:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205887704] [2022-12-13 21:43:54,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205887704] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:43:54,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:43:54,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-13 21:43:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58460362] [2022-12-13 21:43:54,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:43:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:43:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:43:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:43:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=117, Unknown=6, NotChecked=22, Total=182 [2022-12-13 21:43:54,106 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:56,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:44:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:00,630 INFO L93 Difference]: Finished difference Result 244 states and 272 transitions. [2022-12-13 21:44:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:44:00,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 21:44:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:00,632 INFO L225 Difference]: With dead ends: 244 [2022-12-13 21:44:00,632 INFO L226 Difference]: Without dead ends: 242 [2022-12-13 21:44:00,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=86, Invalid=254, Unknown=6, NotChecked=34, Total=380 [2022-12-13 21:44:00,633 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 176 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 338 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 1 Unknown, 102 Unchecked, 5.0s Time] [2022-12-13 21:44:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-12-13 21:44:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 208. [2022-12-13 21:44:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 190 states have (on average 1.231578947368421) internal successors, (234), 207 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2022-12-13 21:44:00,636 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 32 [2022-12-13 21:44:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:00,637 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2022-12-13 21:44:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2022-12-13 21:44:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:44:00,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:00,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:00,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-12-13 21:44:00,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:44:00,839 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:44:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash -822688903, now seen corresponding path program 1 times [2022-12-13 21:44:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:44:00,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050322193] [2022-12-13 21:44:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:00,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:44:00,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:44:00,845 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:44:00,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-13 21:44:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:00,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 21:44:00,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:01,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:01,645 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-13 21:44:01,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:01,747 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-13 21:44:02,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:02,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:44:02,487 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 21:44:02,488 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 28 treesize of output 34 [2022-12-13 21:44:02,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:02,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:44:02,711 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 21:44:02,712 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 32 treesize of output 34 [2022-12-13 21:44:03,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:44:03,237 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 34 treesize of output 25 [2022-12-13 21:44:03,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:44:03,278 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 38 treesize of output 33 [2022-12-13 21:44:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:06,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:44:06,890 INFO L321 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-12-13 21:44:06,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 96 treesize of output 84 [2022-12-13 21:44:06,912 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 21:44:06,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 53 [2022-12-13 21:44:07,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-13 21:44:07,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-13 21:44:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:07,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:32,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:44:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050322193] [2022-12-13 21:44:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050322193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:32,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:44:32,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-12-13 21:44:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872446717] [2022-12-13 21:44:32,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:32,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 21:44:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:44:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 21:44:32,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=786, Unknown=8, NotChecked=0, Total=930 [2022-12-13 21:44:32,862 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:44:37,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:44:39,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:44:42,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:45:10,278 WARN L233 SmtUtils]: Spent 26.39s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:45:13,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:45:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:23,106 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2022-12-13 21:45:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 21:45:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 21:45:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:23,111 INFO L225 Difference]: With dead ends: 215 [2022-12-13 21:45:23,111 INFO L226 Difference]: Without dead ends: 198 [2022-12-13 21:45:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=242, Invalid=1310, Unknown=8, NotChecked=0, Total=1560 [2022-12-13 21:45:23,112 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 48 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:23,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 756 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 413 Invalid, 5 Unknown, 0 Unchecked, 19.6s Time] [2022-12-13 21:45:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-13 21:45:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2022-12-13 21:45:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 173 states have (on average 1.2485549132947977) internal successors, (216), 190 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2022-12-13 21:45:23,115 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 32 [2022-12-13 21:45:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:23,115 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2022-12-13 21:45:23,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2022-12-13 21:45:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 21:45:23,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:23,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:23,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-12-13 21:45:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:23,317 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:45:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 798159371, now seen corresponding path program 1 times [2022-12-13 21:45:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:45:23,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515396011] [2022-12-13 21:45:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:45:23,323 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:45:23,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-12-13 21:45:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:23,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:45:23,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:25,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:25,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:45:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:25,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:45:25,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:45:25,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515396011] [2022-12-13 21:45:25,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515396011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:25,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:25,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:45:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338643025] [2022-12-13 21:45:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:45:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:45:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:45:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:45:25,340 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:26,915 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2022-12-13 21:45:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:45:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-13 21:45:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:26,916 INFO L225 Difference]: With dead ends: 205 [2022-12-13 21:45:26,916 INFO L226 Difference]: Without dead ends: 205 [2022-12-13 21:45:26,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:45:26,917 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 227 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:26,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 21:45:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-12-13 21:45:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2022-12-13 21:45:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 175 states have (on average 1.2457142857142858) internal successors, (218), 192 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 218 transitions. [2022-12-13 21:45:26,922 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 218 transitions. Word has length 33 [2022-12-13 21:45:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:26,922 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 218 transitions. [2022-12-13 21:45:26,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:26,923 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 218 transitions. [2022-12-13 21:45:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 21:45:26,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:26,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:26,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-12-13 21:45:27,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:27,125 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:45:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1557875661, now seen corresponding path program 1 times [2022-12-13 21:45:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:45:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628731746] [2022-12-13 21:45:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:27,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:27,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:45:27,131 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:45:27,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-12-13 21:45:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:45:27,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:27,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:45:27,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:45:28,179 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 21:45:28,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-12-13 21:45:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:28,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:45:28,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:45:28,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628731746] [2022-12-13 21:45:28,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628731746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:28,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:28,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:45:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465524167] [2022-12-13 21:45:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:28,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:45:28,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:45:28,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:45:28,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:45:28,562 INFO L87 Difference]: Start difference. First operand 193 states and 218 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:29,509 INFO L93 Difference]: Finished difference Result 217 states and 241 transitions. [2022-12-13 21:45:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:45:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-12-13 21:45:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:29,511 INFO L225 Difference]: With dead ends: 217 [2022-12-13 21:45:29,511 INFO L226 Difference]: Without dead ends: 217 [2022-12-13 21:45:29,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:45:29,512 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 37 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:29,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 174 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 21:45:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-12-13 21:45:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 192. [2022-12-13 21:45:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 175 states have (on average 1.2342857142857142) internal successors, (216), 191 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 216 transitions. [2022-12-13 21:45:29,515 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 216 transitions. Word has length 35 [2022-12-13 21:45:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:29,515 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 216 transitions. [2022-12-13 21:45:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 216 transitions. [2022-12-13 21:45:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:45:29,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:29,516 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:29,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-12-13 21:45:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:29,717 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:45:29,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1995423857, now seen corresponding path program 1 times [2022-12-13 21:45:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:45:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544113415] [2022-12-13 21:45:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:29,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:45:29,723 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:45:29,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-12-13 21:45:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:29,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:45:29,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:31,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:31,757 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 21:45:31,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2022-12-13 21:45:31,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:32,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:45:32,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:45:32,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2022-12-13 21:45:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:32,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:45:32,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:45:32,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544113415] [2022-12-13 21:45:32,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544113415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:32,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:32,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:45:32,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287760244] [2022-12-13 21:45:32,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:32,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:45:32,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:45:32,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:45:32,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:45:32,925 INFO L87 Difference]: Start difference. First operand 192 states and 216 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:38,381 INFO L93 Difference]: Finished difference Result 271 states and 294 transitions. [2022-12-13 21:45:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:45:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-12-13 21:45:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:38,383 INFO L225 Difference]: With dead ends: 271 [2022-12-13 21:45:38,383 INFO L226 Difference]: Without dead ends: 271 [2022-12-13 21:45:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:45:38,384 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 396 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:38,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 521 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 21:45:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-12-13 21:45:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 192. [2022-12-13 21:45:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 175 states have (on average 1.2228571428571429) internal successors, (214), 191 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2022-12-13 21:45:38,387 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 36 [2022-12-13 21:45:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2022-12-13 21:45:38,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2022-12-13 21:45:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:45:38,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:38,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:38,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-12-13 21:45:38,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:38,590 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:45:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1026976127, now seen corresponding path program 1 times [2022-12-13 21:45:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:45:38,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599994446] [2022-12-13 21:45:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:38,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:38,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:45:38,596 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:45:38,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-12-13 21:45:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:38,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 21:45:38,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:38,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:45:39,192 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 21:45:39,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 21:45:39,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:40,364 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:45:40,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2022-12-13 21:45:40,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:41,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-12-13 21:45:42,306 INFO L321 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-12-13 21:45:42,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2022-12-13 21:45:42,742 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-12-13 21:45:42,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 39 [2022-12-13 21:45:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:43,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:45:43,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:45:43,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599994446] [2022-12-13 21:45:43,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599994446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:43,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:43,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:45:43,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614328336] [2022-12-13 21:45:43,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:43,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:45:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:45:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:45:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:45:43,097 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:48,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:45:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:53,038 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2022-12-13 21:45:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:45:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-12-13 21:45:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:53,041 INFO L225 Difference]: With dead ends: 203 [2022-12-13 21:45:53,041 INFO L226 Difference]: Without dead ends: 203 [2022-12-13 21:45:53,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=108, Invalid=397, Unknown=1, NotChecked=0, Total=506 [2022-12-13 21:45:53,041 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 150 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:53,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 453 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 541 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2022-12-13 21:45:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-13 21:45:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2022-12-13 21:45:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 178 states have (on average 1.2191011235955056) internal successors, (217), 194 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2022-12-13 21:45:53,045 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 36 [2022-12-13 21:45:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:53,045 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2022-12-13 21:45:53,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2022-12-13 21:45:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 21:45:53,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:53,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:53,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-12-13 21:45:53,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:53,247 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:45:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1771489038, now seen corresponding path program 1 times [2022-12-13 21:45:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:45:53,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276140844] [2022-12-13 21:45:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:53,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:45:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:45:53,251 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:45:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-12-13 21:45:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:45:53,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:54,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:54,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:45:54,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:45:55,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-13 21:45:56,058 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:45:56,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 20 [2022-12-13 21:45:56,546 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-12-13 21:45:56,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-12-13 21:45:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:56,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:45:56,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:45:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276140844] [2022-12-13 21:45:56,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276140844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:56,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:56,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:45:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365188998] [2022-12-13 21:45:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:56,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:45:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:45:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:45:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:45:56,698 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:58,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:01,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:03,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:06,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:08,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:13,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:16,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:46:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:46:16,479 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2022-12-13 21:46:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:46:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-13 21:46:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:46:16,482 INFO L225 Difference]: With dead ends: 243 [2022-12-13 21:46:16,482 INFO L226 Difference]: Without dead ends: 243 [2022-12-13 21:46:16,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:46:16,482 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 378 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:46:16,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 382 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 388 Invalid, 7 Unknown, 0 Unchecked, 17.1s Time] [2022-12-13 21:46:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-13 21:46:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 191. [2022-12-13 21:46:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.2298850574712643) internal successors, (214), 190 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2022-12-13 21:46:16,486 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 37 [2022-12-13 21:46:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:46:16,486 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2022-12-13 21:46:16,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2022-12-13 21:46:16,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 21:46:16,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:46:16,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:16,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-12-13 21:46:16,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:16,688 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:46:16,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1825070928, now seen corresponding path program 1 times [2022-12-13 21:46:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:46:16,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594134564] [2022-12-13 21:46:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:46:16,690 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:46:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-12-13 21:46:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:16,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:46:16,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:16,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:46:17,056 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:46:17,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2022-12-13 21:46:17,666 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 21:46:17,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 21:46:18,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:46:18,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 21:46:18,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:46:19,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 21:46:21,359 INFO L321 Elim1Store]: treesize reduction 27, result has 34.1 percent of original size [2022-12-13 21:46:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 35 [2022-12-13 21:46:21,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:46:22,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:46:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:22,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:46:22,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:46:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594134564] [2022-12-13 21:46:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594134564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:22,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:22,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 21:46:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375258018] [2022-12-13 21:46:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 21:46:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:46:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 21:46:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:46:22,164 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:46:37,281 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2022-12-13 21:46:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 21:46:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-13 21:46:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:46:37,283 INFO L225 Difference]: With dead ends: 217 [2022-12-13 21:46:37,283 INFO L226 Difference]: Without dead ends: 217 [2022-12-13 21:46:37,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=435, Invalid=1205, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 21:46:37,284 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 454 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:46:37,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 356 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 454 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 21:46:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-12-13 21:46:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 191. [2022-12-13 21:46:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 190 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2022-12-13 21:46:37,287 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 37 [2022-12-13 21:46:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:46:37,287 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2022-12-13 21:46:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2022-12-13 21:46:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 21:46:37,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:46:37,288 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:37,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-12-13 21:46:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:37,490 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-12-13 21:46:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -220546803, now seen corresponding path program 3 times [2022-12-13 21:46:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:46:37,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283298303] [2022-12-13 21:46:37,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:46:37,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:37,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:46:37,496 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:46:37,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_decacca1-9d2a-4096-a75c-fee732224f80/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-12-13 21:46:38,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 21:46:38,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:46:38,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 21:46:38,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:38,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:46:38,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:46:38,387 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:46:38,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:46:38,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:46:38,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:46:39,269 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:46:39,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-13 21:46:39,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 21:46:40,077 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:46:40,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 65 [2022-12-13 21:46:40,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2022-12-13 21:46:40,930 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:46:40,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 65 [2022-12-13 21:46:40,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2022-12-13 21:46:41,795 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:46:41,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-13 21:46:41,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 21:46:42,778 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:46:42,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 65 [2022-12-13 21:46:42,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 44 [2022-12-13 21:46:43,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-13 21:46:43,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 21:46:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:43,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:46:45,488 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (or (not (bvule (bvadd (_ bv4 32) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| .cse2))) (and (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0 .cse3) (bvadd (_ bv8 32) .cse0 .cse3)))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))))) (not (bvslt |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv20 32)))))) is different from false [2022-12-13 21:46:45,621 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (or (not (bvslt (bvadd |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv1 32)) (_ bv20 32))) (not (bvule (bvadd (_ bv8 32) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| .cse2))) (and (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0 .cse3) (bvadd .cse0 .cse3 (_ bv12 32))))))))) is different from false [2022-12-13 21:46:49,304 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|))) (or (not (bvule (bvadd .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse1)) (not (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|))) (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (and (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1406))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1407) .cse7 v_ArrVal_1408)) (.cse4 (select (select (store .cse6 .cse7 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (not (bvule (bvadd (select (select .cse2 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) .cse0 (_ bv12 32)) (select |c_#length| .cse4))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store .cse2 .cse4 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd .cse5 .cse0 (_ bv12 32)) (bvadd (_ bv16 32) .cse5 .cse0))))))))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1406))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse10 (store .cse12 .cse11 v_ArrVal_1409))) (let ((.cse8 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1407) .cse11 v_ArrVal_1408)) (.cse9 (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (not (bvule (bvadd (select (select .cse8 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) .cse0 (_ bv12 32)) (select |c_#length| .cse9))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv16 32) (select (select (store .cse8 .cse9 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) .cse0) (select |c_#length| (select (select (store .cse10 .cse9 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))))))))))))))) is different from false [2022-12-13 21:46:49,576 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse14 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)) (.cse0 (bvadd (_ bv4 32) .cse2 .cse14))) (or (not (bvule .cse0 (select |c_#length| .cse1))) (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (and (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1406))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse6 (store .cse8 .cse7 v_ArrVal_1409))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1407) .cse7 v_ArrVal_1408)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv16 32) .cse2 (select (select (store .cse3 .cse4 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)))) (not (bvule (bvadd (select (select .cse3 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse2 (_ bv12 32)) (select |c_#length| .cse4))))))))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1406))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1407) .cse13 v_ArrVal_1408)) (.cse11 (select (select (store .cse12 .cse13 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (store .cse10 .cse11 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd .cse2 .cse9 (_ bv12 32)) (bvadd (_ bv16 32) .cse2 .cse9)))) (not (bvule (bvadd (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse2 (_ bv12 32)) (select |c_#length| .cse11))))))))) (not (bvule (bvadd .cse2 .cse14) .cse0)))))) is different from false [2022-12-13 21:46:50,048 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse14 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)) (.cse13 (bvadd (_ bv8 32) .cse0 .cse14))) (or (and (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1406))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse4 (store .cse7 .cse6 v_ArrVal_1409))) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1407) .cse6 v_ArrVal_1408)) (.cse2 (select (select .cse4 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)))) (not (bvule (bvadd (select (select .cse1 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv16 32) .cse0) (select |c_#length| .cse2))))))))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1406))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse9 (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1407) .cse12 v_ArrVal_1408)) (.cse10 (select (select (store .cse11 .cse12 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store .cse9 .cse10 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd (_ bv16 32) .cse0 .cse8) (bvadd .cse0 .cse8 (_ bv20 32))))) (not (bvule (bvadd (select (select .cse9 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv16 32) .cse0) (select |c_#length| .cse10))))))))) (not (bvule .cse13 (select |c_#length| .cse5))) (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (not (bvule (bvadd (_ bv4 32) .cse0 .cse14) .cse13)))))) is different from false [2022-12-13 21:46:50,892 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|))) (or (not (bvule (bvadd .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse1)) (not (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|))) (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (let ((.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (and (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1404))) (let ((.cse2 (select (select .cse9 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse3 (bvadd (_ bv8 32) .cse0 .cse2))) (or (not (bvule (bvadd (_ bv4 32) .cse0 .cse2) .cse3)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1405))) (let ((.cse4 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule .cse3 (select |c_#length| .cse4))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store .cse12 .cse4 v_ArrVal_1406))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse8 (store .cse11 .cse10 v_ArrVal_1409))) (let ((.cse5 (store (store .cse9 .cse4 v_ArrVal_1407) .cse10 v_ArrVal_1408)) (.cse6 (select (select .cse8 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse5 .cse6 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0 (_ bv20 32)) (select |c_#length| (select (select (store .cse8 .cse6 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)))) (not (bvule (bvadd (_ bv16 32) (select (select .cse5 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0) (select |c_#length| .cse6)))))))))))))))))) (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1404))) (let ((.cse13 (select (select .cse21 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse14 (bvadd (_ bv8 32) .cse0 .cse13))) (or (not (bvule (bvadd (_ bv4 32) .cse0 .cse13) .cse14)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1405))) (let ((.cse15 (select (select .cse22 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule .cse14 (select |c_#length| .cse15))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse19 (store .cse22 .cse15 v_ArrVal_1406))) (let ((.cse20 (select (select .cse19 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse16 (store (store .cse21 .cse15 v_ArrVal_1407) .cse20 v_ArrVal_1408)) (.cse17 (select (select (store .cse19 .cse20 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule (bvadd (_ bv16 32) (select (select .cse16 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0) (select |c_#length| .cse17))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (select (store .cse16 .cse17 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (bvule (bvadd (_ bv16 32) .cse18 .cse0) (bvadd .cse18 .cse0 (_ bv20 32)))))))))))))))))))))))) is different from false [2022-12-13 21:47:30,568 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse16 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (and (forall ((v_ArrVal_1403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (store |c_#memory_$Pointer$.offset| .cse16 v_ArrVal_1403))) (let ((.cse0 (select (select .cse15 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse1 (bvadd (_ bv8 32) .cse0))) (or (not (bvule (bvadd (_ bv4 32) .cse0) .cse1)) (forall ((v_ArrVal_1402 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse16 v_ArrVal_1402))) (let ((.cse2 (select (select .cse13 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule .cse1 (select |c_#length| .cse2))) (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store .cse15 .cse2 v_ArrVal_1404))) (let ((.cse14 (select (select .cse7 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse12 (bvadd .cse14 (_ bv12 32)))) (or (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store .cse13 .cse2 v_ArrVal_1405))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_1406))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse6 (store .cse10 .cse9 v_ArrVal_1409))) (let ((.cse3 (store (store .cse7 .cse8 v_ArrVal_1407) .cse9 v_ArrVal_1408)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse3 .cse4 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)))) (not (bvule (bvadd (select (select .cse3 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) (_ bv20 32)) (select |c_#length| .cse4))))))))) (not (bvule .cse12 (select |c_#length| .cse8))))))) (not (bvule (bvadd (_ bv8 32) .cse14) .cse12)))))))))))))))) (forall ((v_ArrVal_1403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse31 (store |c_#memory_$Pointer$.offset| .cse16 v_ArrVal_1403))) (let ((.cse17 (select (select .cse31 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse18 (bvadd (_ bv8 32) .cse17))) (or (not (bvule (bvadd (_ bv4 32) .cse17) .cse18)) (forall ((v_ArrVal_1402 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse28 (store |c_#memory_$Pointer$.base| .cse16 v_ArrVal_1402))) (let ((.cse29 (select (select .cse28 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse24 (store .cse31 .cse29 v_ArrVal_1404))) (let ((.cse30 (select (select .cse24 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse27 (bvadd .cse30 (_ bv12 32)))) (or (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse26 (store .cse28 .cse29 v_ArrVal_1405))) (let ((.cse25 (select (select .cse26 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store .cse26 .cse25 v_ArrVal_1406))) (let ((.cse23 (select (select .cse22 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse19 (store (store .cse24 .cse25 v_ArrVal_1407) .cse23 v_ArrVal_1408)) (.cse20 (select (select (store .cse22 .cse23 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule (bvadd (select (select .cse19 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) (_ bv20 32)) (select |c_#length| .cse20))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (select (select (store .cse19 .cse20 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd (_ bv20 32) .cse21) (bvadd .cse21 (_ bv24 32)))))))))) (not (bvule .cse27 (select |c_#length| .cse25))))))) (not (bvule (bvadd (_ bv8 32) .cse30) .cse27))))))) (not (bvule .cse18 (select |c_#length| .cse29))))))))))))))) is different from false [2022-12-13 21:47:30,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:47:30,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1332 treesize of output 1252 [2022-12-13 21:47:30,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:47:30,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1216 treesize of output 716 [2022-12-13 21:47:31,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108807804 treesize of output 99576456