./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R --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 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 --- 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-38b53e6 [2022-11-25 15:33:23,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:33:23,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:33:24,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:33:24,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:33:24,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:33:24,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:33:24,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:33:24,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:33:24,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:33:24,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:33:24,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:33:24,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:33:24,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:33:24,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:33:24,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:33:24,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:33:24,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:33:24,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:33:24,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:33:24,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:33:24,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:33:24,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:33:24,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:33:24,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:33:24,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:33:24,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:33:24,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:33:24,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:33:24,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:33:24,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:33:24,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:33:24,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:33:24,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:33:24,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:33:24,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:33:24,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:33:24,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:33:24,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:33:24,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:33:24,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:33:24,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:33:24,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:33:24,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:33:24,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:33:24,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:33:24,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:33:24,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:33:24,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:33:24,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:33:24,137 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:33:24,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:33:24,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:33:24,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:33:24,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:33:24,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:33:24,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:33:24,140 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:33:24,140 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:33:24,140 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:33:24,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:33:24,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:33:24,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:33:24,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:33:24,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:33:24,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:33:24,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:33:24,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:33:24,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:33:24,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:33:24,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:33:24,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:33:24,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:33:24,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:33:24,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:33:24,144 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_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 [2022-11-25 15:33:24,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:33:24,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:33:24,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:33:24,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:33:24,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:33:24,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2022-11-25 15:33:27,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:33:27,796 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:33:27,803 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2022-11-25 15:33:27,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/9e45735a1/d96ce1f70e6e4a52b7d0006258cb4fbb/FLAG8e6c1a212 [2022-11-25 15:33:27,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/9e45735a1/d96ce1f70e6e4a52b7d0006258cb4fbb [2022-11-25 15:33:27,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:33:27,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:33:27,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:27,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:33:27,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:33:27,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:27" (1/1) ... [2022-11-25 15:33:27,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485c77e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:27, skipping insertion in model container [2022-11-25 15:33:27,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:27" (1/1) ... [2022-11-25 15:33:27,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:33:27,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:33:28,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:28,341 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 15:33:28,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f438799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:28, skipping insertion in model container [2022-11-25 15:33:28,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:28,343 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 15:33:28,345 INFO L158 Benchmark]: Toolchain (without parser) took 500.67ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 101.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 15:33:28,345 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:33:28,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.28ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 101.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 15:33:28,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.28ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 101.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R --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 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 --- 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-38b53e6 [2022-11-25 15:33:30,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:33:30,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:33:30,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:33:30,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:33:30,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:33:30,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:33:30,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:33:30,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:33:30,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:33:30,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:33:30,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:33:30,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:33:30,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:33:30,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:33:30,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:33:30,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:33:30,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:33:30,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:33:30,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:33:30,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:33:30,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:33:30,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:33:30,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:33:30,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:33:30,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:33:30,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:33:30,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:33:30,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:33:30,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:33:30,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:33:30,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:33:30,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:33:30,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:33:30,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:33:30,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:33:30,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:33:30,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:33:30,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:33:30,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:33:30,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:33:30,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 15:33:30,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:33:30,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:33:30,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:33:30,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:33:30,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:33:30,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:33:30,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:33:30,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:33:30,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:33:30,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:33:30,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:33:30,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:33:30,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:33:30,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:33:30,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:33:30,845 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:33:30,845 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:33:30,845 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:33:30,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:33:30,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:33:30,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:33:30,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:33:30,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:33:30,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:33:30,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:33:30,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:33:30,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:33:30,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:33:30,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:33:30,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:33:30,849 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:33:30,849 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:33:30,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:33:30,850 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:33:30,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:33:30,850 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:33:30,850 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_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 [2022-11-25 15:33:31,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:33:31,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:33:31,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:33:31,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:33:31,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:33:31,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2022-11-25 15:33:34,435 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:33:34,718 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:33:34,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2022-11-25 15:33:34,748 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/dcd7a9946/f32d1f2f341c428b911574567a28bbc2/FLAGfcebc9e6b [2022-11-25 15:33:34,768 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/data/dcd7a9946/f32d1f2f341c428b911574567a28bbc2 [2022-11-25 15:33:34,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:33:34,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:33:34,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:34,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:33:34,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:33:34,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:34" (1/1) ... [2022-11-25 15:33:34,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1d195b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:34, skipping insertion in model container [2022-11-25 15:33:34,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:34" (1/1) ... [2022-11-25 15:33:34,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:33:34,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:33:35,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:35,429 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 15:33:35,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:33:35,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:35,504 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:33:35,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:35,617 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:33:35,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35 WrapperNode [2022-11-25 15:33:35,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:35,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:33:35,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:33:35,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:33:35,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,680 INFO L138 Inliner]: procedures = 166, calls = 76, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 70 [2022-11-25 15:33:35,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:33:35,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:33:35,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:33:35,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:33:35,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:33:35,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:33:35,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:33:35,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:33:35,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (1/1) ... [2022-11-25 15:33:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:33:35,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:33:35,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:33:35,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:33:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 15:33:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 15:33:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:33:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:33:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:33:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:33:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:33:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 15:33:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:33:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:33:35,931 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:33:35,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:33:36,231 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:33:36,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:33:36,239 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 15:33:36,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:33:36 BoogieIcfgContainer [2022-11-25 15:33:36,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:33:36,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:33:36,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:33:36,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:33:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:33:34" (1/3) ... [2022-11-25 15:33:36,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d7611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:33:36, skipping insertion in model container [2022-11-25 15:33:36,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:35" (2/3) ... [2022-11-25 15:33:36,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d7611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:33:36, skipping insertion in model container [2022-11-25 15:33:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:33:36" (3/3) ... [2022-11-25 15:33:36,251 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_3.i [2022-11-25 15:33:36,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:33:36,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-25 15:33:36,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:33:36,326 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;@51d74946, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:33:36,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 15:33:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 48 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:33:36,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:36,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:36,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 714233942, now seen corresponding path program 1 times [2022-11-25 15:33:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:36,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232064290] [2022-11-25 15:33:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:36,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:36,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 15:33:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:33:36,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:36,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:36,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232064290] [2022-11-25 15:33:36,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232064290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:36,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:36,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:33:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582310413] [2022-11-25 15:33:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:36,689 INFO L87 Difference]: Start difference. First operand has 52 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 48 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:36,837 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-11-25 15:33:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 15:33:36,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:36,851 INFO L225 Difference]: With dead ends: 98 [2022-11-25 15:33:36,852 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 15:33:36,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:36,866 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:36,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 199 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:33:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 15:33:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2022-11-25 15:33:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:33:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2022-11-25 15:33:36,926 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 11 [2022-11-25 15:33:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:36,927 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2022-11-25 15:33:36,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2022-11-25 15:33:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:33:36,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:36,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:36,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:37,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 714155687, now seen corresponding path program 1 times [2022-11-25 15:33:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:37,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108468521] [2022-11-25 15:33:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:37,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:37,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:37,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:37,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 15:33:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:33:37,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:37,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:33:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:37,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:37,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108468521] [2022-11-25 15:33:37,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108468521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:37,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:37,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:33:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450659042] [2022-11-25 15:33:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:37,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:37,332 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:37,528 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2022-11-25 15:33:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:37,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 15:33:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:37,530 INFO L225 Difference]: With dead ends: 67 [2022-11-25 15:33:37,530 INFO L226 Difference]: Without dead ends: 67 [2022-11-25 15:33:37,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:37,531 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:37,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:33:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-25 15:33:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2022-11-25 15:33:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 58 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:33:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2022-11-25 15:33:37,539 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 11 [2022-11-25 15:33:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:37,540 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-25 15:33:37,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2022-11-25 15:33:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:33:37,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:37,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:37,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:37,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:37,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash 714155688, now seen corresponding path program 1 times [2022-11-25 15:33:37,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166708860] [2022-11-25 15:33:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:37,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:37,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:37,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:37,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 15:33:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:33:37,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:37,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:33:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:37,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:37,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:37,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166708860] [2022-11-25 15:33:37,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166708860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:37,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:37,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122291801] [2022-11-25 15:33:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:33:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:33:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:33:37,989 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:38,360 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2022-11-25 15:33:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:33:38,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 15:33:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:38,362 INFO L225 Difference]: With dead ends: 82 [2022-11-25 15:33:38,362 INFO L226 Difference]: Without dead ends: 82 [2022-11-25 15:33:38,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:33:38,364 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 74 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:38,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:33:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-25 15:33:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2022-11-25 15:33:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.5185185185185186) internal successors, (82), 68 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:33:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2022-11-25 15:33:38,371 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 11 [2022-11-25 15:33:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:38,372 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2022-11-25 15:33:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2022-11-25 15:33:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:33:38,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:38,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:38,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:33:38,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:38,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1601737623, now seen corresponding path program 1 times [2022-11-25 15:33:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:38,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468133713] [2022-11-25 15:33:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:38,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:38,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:38,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:38,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 15:33:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:38,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:33:38,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:38,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:38,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468133713] [2022-11-25 15:33:38,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468133713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:38,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:38,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398007843] [2022-11-25 15:33:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:33:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:33:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:33:38,687 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:38,802 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2022-11-25 15:33:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:33:38,803 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 15:33:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:38,805 INFO L225 Difference]: With dead ends: 106 [2022-11-25 15:33:38,805 INFO L226 Difference]: Without dead ends: 104 [2022-11-25 15:33:38,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:33:38,806 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 36 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:38,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:33:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-25 15:33:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2022-11-25 15:33:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.5) internal successors, (81), 68 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:33:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2022-11-25 15:33:38,814 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 11 [2022-11-25 15:33:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:38,814 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2022-11-25 15:33:38,814 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2022-11-25 15:33:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:33:38,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:38,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:38,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:39,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:39,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1601659368, now seen corresponding path program 1 times [2022-11-25 15:33:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:39,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491423710] [2022-11-25 15:33:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:39,028 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 [2022-11-25 15:33:39,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:39,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 15:33:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:39,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:33:39,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:39,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:39,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:39,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491423710] [2022-11-25 15:33:39,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491423710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:39,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:39,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:33:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274195275] [2022-11-25 15:33:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:39,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:39,189 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:39,255 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-11-25 15:33:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 15:33:39,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:39,257 INFO L225 Difference]: With dead ends: 61 [2022-11-25 15:33:39,257 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 15:33:39,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:39,259 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:39,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:33:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 15:33:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-25 15:33:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-25 15:33:39,264 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 11 [2022-11-25 15:33:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:39,264 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-25 15:33:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-25 15:33:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 15:33:39,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:39,265 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:39,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:39,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1855917097, now seen corresponding path program 1 times [2022-11-25 15:33:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:39,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544046360] [2022-11-25 15:33:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:39,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:39,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:39,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:39,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 15:33:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:39,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:33:39,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:39,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:33:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:39,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:40,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:40,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544046360] [2022-11-25 15:33:40,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544046360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:40,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:33:40,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-25 15:33:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648353880] [2022-11-25 15:33:40,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 15:33:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 15:33:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:40,615 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:42,265 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2022-11-25 15:33:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:33:42,267 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-11-25 15:33:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:42,268 INFO L225 Difference]: With dead ends: 99 [2022-11-25 15:33:42,268 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 15:33:42,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-11-25 15:33:42,270 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 230 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:42,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 268 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 15:33:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 15:33:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2022-11-25 15:33:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.44) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-11-25 15:33:42,276 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 14 [2022-11-25 15:33:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:42,276 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-11-25 15:33:42,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-11-25 15:33:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 15:33:42,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:42,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:42,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:42,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:42,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 854181427, now seen corresponding path program 1 times [2022-11-25 15:33:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:42,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213586183] [2022-11-25 15:33:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:42,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:42,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:42,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:42,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 15:33:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:42,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:33:42,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:42,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:42,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213586183] [2022-11-25 15:33:42,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213586183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:42,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:33:42,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 15:33:42,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262926307] [2022-11-25 15:33:42,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:42,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:33:42,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:42,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:33:42,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:33:42,798 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:43,051 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2022-11-25 15:33:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:33:43,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-25 15:33:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:43,054 INFO L225 Difference]: With dead ends: 74 [2022-11-25 15:33:43,054 INFO L226 Difference]: Without dead ends: 74 [2022-11-25 15:33:43,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:33:43,055 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 115 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:43,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 294 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:33:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-25 15:33:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-25 15:33:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-11-25 15:33:43,061 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 22 [2022-11-25 15:33:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:43,061 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-11-25 15:33:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-11-25 15:33:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 15:33:43,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:43,063 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:43,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:43,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:43,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1071704552, now seen corresponding path program 2 times [2022-11-25 15:33:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411033959] [2022-11-25 15:33:43,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:33:43,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:43,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:43,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 15:33:43,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:33:43,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:33:43,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 15:33:43,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:43,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:33:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:43,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:46,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:46,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411033959] [2022-11-25 15:33:46,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411033959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:46,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:33:46,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-25 15:33:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066027520] [2022-11-25 15:33:46,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:46,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 15:33:46,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 15:33:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:33:46,092 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:51,095 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2022-11-25 15:33:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 15:33:51,096 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-25 15:33:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:51,097 INFO L225 Difference]: With dead ends: 93 [2022-11-25 15:33:51,097 INFO L226 Difference]: Without dead ends: 93 [2022-11-25 15:33:51,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 15:33:51,098 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 225 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:51,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 446 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 15:33:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-25 15:33:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2022-11-25 15:33:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 82 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2022-11-25 15:33:51,103 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 23 [2022-11-25 15:33:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:51,104 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2022-11-25 15:33:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:33:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2022-11-25 15:33:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 15:33:51,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:51,105 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:51,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:51,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:51,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1134263027, now seen corresponding path program 2 times [2022-11-25 15:33:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:51,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902012477] [2022-11-25 15:33:51,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:33:51,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:51,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:51,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:51,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 15:33:51,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:33:51,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:33:51,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:33:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 15:33:51,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:51,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:51,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902012477] [2022-11-25 15:33:51,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902012477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:51,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:51,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:33:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376836775] [2022-11-25 15:33:51,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:33:51,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:33:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:33:51,489 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:51,550 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2022-11-25 15:33:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:33:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-25 15:33:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:51,552 INFO L225 Difference]: With dead ends: 114 [2022-11-25 15:33:51,553 INFO L226 Difference]: Without dead ends: 114 [2022-11-25 15:33:51,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:51,554 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:51,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 97 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:33:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-25 15:33:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 81. [2022-11-25 15:33:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 77 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2022-11-25 15:33:51,559 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 34 [2022-11-25 15:33:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:51,559 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2022-11-25 15:33:51,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:33:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2022-11-25 15:33:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 15:33:51,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:51,561 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:51,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:51,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:51,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 269265368, now seen corresponding path program 1 times [2022-11-25 15:33:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251723923] [2022-11-25 15:33:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:51,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:51,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:51,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 15:33:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:51,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:33:51,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:52,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:33:52,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:52,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251723923] [2022-11-25 15:33:52,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251723923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:52,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:33:52,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-25 15:33:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720973738] [2022-11-25 15:33:52,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:52,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:33:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:33:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:33:52,562 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 15:33:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:53,016 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-25 15:33:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:33:53,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-11-25 15:33:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:53,018 INFO L225 Difference]: With dead ends: 81 [2022-11-25 15:33:53,018 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 15:33:53,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:33:53,019 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 115 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:53,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 355 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:33:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 15:33:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-25 15:33:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:33:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-25 15:33:53,029 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 38 [2022-11-25 15:33:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:53,029 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-25 15:33:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 15:33:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-25 15:33:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 15:33:53,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:53,031 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:53,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:53,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:53,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:33:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1255484104, now seen corresponding path program 3 times [2022-11-25 15:33:53,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573343897] [2022-11-25 15:33:53,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:33:53,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:33:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:53,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:33:53,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:33:53,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-25 15:33:53,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:33:53,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 15:33:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:53,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:33:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:54,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:58,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:58,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573343897] [2022-11-25 15:33:58,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573343897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:58,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:33:58,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-25 15:33:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572920650] [2022-11-25 15:33:58,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 15:33:58,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 15:33:58,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 15:33:58,799 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:34:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:03,711 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2022-11-25 15:34:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:34:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-25 15:34:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:03,713 INFO L225 Difference]: With dead ends: 115 [2022-11-25 15:34:03,713 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 15:34:03,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2022-11-25 15:34:03,715 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 482 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:03,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 535 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 15:34:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 15:34:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 79. [2022-11-25 15:34:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 75 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-11-25 15:34:03,720 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 41 [2022-11-25 15:34:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-11-25 15:34:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:34:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-11-25 15:34:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 15:34:03,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:03,722 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:03,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:03,935 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1908613480, now seen corresponding path program 2 times [2022-11-25 15:34:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035971137] [2022-11-25 15:34:03,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:03,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:03,938 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 15:34:04,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:34:04,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:04,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 15:34:04,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:04,185 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 5 [2022-11-25 15:34:04,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:04,696 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_269 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_269))))) is different from true [2022-11-25 15:34:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:04,725 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 [2022-11-25 15:34:04,744 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:04,744 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 [2022-11-25 15:34:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-25 15:34:04,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:05,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035971137] [2022-11-25 15:34:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035971137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186710865] [2022-11-25 15:34:05,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:05,364 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:34:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:34:05,367 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:34:05,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 15:34:05,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:34:05,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:05,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 15:34:05,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:05,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:34:05,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:06,256 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_339 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_339) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:34:06,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:06,277 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 [2022-11-25 15:34:06,290 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:06,290 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 [2022-11-25 15:34:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-25 15:34:06,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:08,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1186710865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:08,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:08,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-11-25 15:34:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82140281] [2022-11-25 15:34:08,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:08,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:34:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:34:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=109, Unknown=2, NotChecked=42, Total=182 [2022-11-25 15:34:08,579 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:09,572 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2022-11-25 15:34:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:34:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-25 15:34:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:09,574 INFO L225 Difference]: With dead ends: 168 [2022-11-25 15:34:09,574 INFO L226 Difference]: Without dead ends: 168 [2022-11-25 15:34:09,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=69, Invalid=279, Unknown=2, NotChecked=70, Total=420 [2022-11-25 15:34:09,575 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 170 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:09,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 335 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 384 Invalid, 0 Unknown, 262 Unchecked, 0.7s Time] [2022-11-25 15:34:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-25 15:34:09,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 112. [2022-11-25 15:34:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3870967741935485) internal successors, (129), 105 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:34:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2022-11-25 15:34:09,581 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 50 [2022-11-25 15:34:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:09,581 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2022-11-25 15:34:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2022-11-25 15:34:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 15:34:09,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:09,583 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:09,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:09,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:09,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:09,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1908613481, now seen corresponding path program 1 times [2022-11-25 15:34:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:09,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029333814] [2022-11-25 15:34:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:09,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:10,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 15:34:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:10,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:34:10,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:10,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:10,366 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-25 15:34:10,384 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:34:10,385 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 [2022-11-25 15:34:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-25 15:34:10,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 15:34:10,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:10,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029333814] [2022-11-25 15:34:10,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029333814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:10,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-11-25 15:34:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762592740] [2022-11-25 15:34:10,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:34:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:34:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-11-25 15:34:10,652 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:10,909 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2022-11-25 15:34:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:34:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-25 15:34:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:10,912 INFO L225 Difference]: With dead ends: 130 [2022-11-25 15:34:10,912 INFO L226 Difference]: Without dead ends: 130 [2022-11-25 15:34:10,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2022-11-25 15:34:10,914 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:10,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 144 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-11-25 15:34:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-25 15:34:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2022-11-25 15:34:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 95 states have internal predecessors, (108), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:34:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2022-11-25 15:34:10,919 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 50 [2022-11-25 15:34:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:10,920 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2022-11-25 15:34:10,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2022-11-25 15:34:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 15:34:10,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:10,922 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:10,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:11,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -226568731, now seen corresponding path program 1 times [2022-11-25 15:34:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:11,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802450756] [2022-11-25 15:34:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:11,128 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 [2022-11-25 15:34:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:11,129 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 15:34:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:11,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:34:11,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:11,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:11,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:11,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802450756] [2022-11-25 15:34:11,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802450756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:11,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:11,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:34:11,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646893453] [2022-11-25 15:34:11,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:34:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:34:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:11,318 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 15:34:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:11,383 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2022-11-25 15:34:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:34:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-11-25 15:34:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:11,401 INFO L225 Difference]: With dead ends: 121 [2022-11-25 15:34:11,401 INFO L226 Difference]: Without dead ends: 121 [2022-11-25 15:34:11,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:34:11,402 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 15 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:11,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 194 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-25 15:34:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2022-11-25 15:34:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 96 states have internal predecessors, (109), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:34:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2022-11-25 15:34:11,407 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 52 [2022-11-25 15:34:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:11,408 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2022-11-25 15:34:11,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 15:34:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2022-11-25 15:34:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 15:34:11,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:11,409 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:11,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:11,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:11,610 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1516241604, now seen corresponding path program 1 times [2022-11-25 15:34:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:11,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45256538] [2022-11-25 15:34:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:11,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:11,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:11,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:11,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:34:11,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-25 15:34:11,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:11,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:11,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45256538] [2022-11-25 15:34:11,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45256538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:11,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:11,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:34:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459432596] [2022-11-25 15:34:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:34:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:34:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:34:11,824 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:34:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:11,926 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2022-11-25 15:34:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:34:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-11-25 15:34:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:11,928 INFO L225 Difference]: With dead ends: 117 [2022-11-25 15:34:11,928 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 15:34:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:11,929 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 21 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 138 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 15:34:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2022-11-25 15:34:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 89 states have (on average 1.247191011235955) internal successors, (111), 98 states have internal predecessors, (111), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:34:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2022-11-25 15:34:11,934 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 52 [2022-11-25 15:34:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:11,934 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2022-11-25 15:34:11,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:34:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2022-11-25 15:34:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:34:11,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:11,936 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:11,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:12,137 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash -840525585, now seen corresponding path program 1 times [2022-11-25 15:34:12,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067127888] [2022-11-25 15:34:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:12,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:12,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:12,140 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:12,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 15:34:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:12,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:34:12,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-25 15:34:12,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-25 15:34:12,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067127888] [2022-11-25 15:34:12,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067127888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:12,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:12,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 15:34:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317156032] [2022-11-25 15:34:12,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:34:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:34:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:34:12,615 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:12,866 INFO L93 Difference]: Finished difference Result 232 states and 268 transitions. [2022-11-25 15:34:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:34:12,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-11-25 15:34:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:12,868 INFO L225 Difference]: With dead ends: 232 [2022-11-25 15:34:12,868 INFO L226 Difference]: Without dead ends: 232 [2022-11-25 15:34:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:34:12,869 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 278 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 212 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-25 15:34:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 138. [2022-11-25 15:34:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 124 states have internal predecessors, (147), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 170 transitions. [2022-11-25 15:34:12,877 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 170 transitions. Word has length 55 [2022-11-25 15:34:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:12,877 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 170 transitions. [2022-11-25 15:34:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 170 transitions. [2022-11-25 15:34:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:34:12,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:12,878 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:12,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:13,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:13,102 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash 181256032, now seen corresponding path program 1 times [2022-11-25 15:34:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:13,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170697641] [2022-11-25 15:34:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:13,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:13,104 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:13,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:13,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:34:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 15:34:13,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:13,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170697641] [2022-11-25 15:34:13,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170697641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:13,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:13,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-25 15:34:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964403204] [2022-11-25 15:34:13,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:34:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:34:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:34:13,890 INFO L87 Difference]: Start difference. First operand 138 states and 170 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:14,064 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2022-11-25 15:34:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:34:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-11-25 15:34:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:14,066 INFO L225 Difference]: With dead ends: 141 [2022-11-25 15:34:14,067 INFO L226 Difference]: Without dead ends: 139 [2022-11-25 15:34:14,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:34:14,067 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 101 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:14,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 155 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:34:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-25 15:34:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-25 15:34:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 124 states have internal predecessors, (147), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2022-11-25 15:34:14,074 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 55 [2022-11-25 15:34:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2022-11-25 15:34:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2022-11-25 15:34:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:34:14,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:14,076 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-25 15:34:14,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:14,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:14,290 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1024677531, now seen corresponding path program 1 times [2022-11-25 15:34:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:14,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560729595] [2022-11-25 15:34:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:14,292 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 15:34:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:14,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:34:14,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:14,932 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))) is different from true [2022-11-25 15:34:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:14,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:15,190 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret42#1.base_41| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_41|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_41| (_ bv0 1))))) is different from false [2022-11-25 15:34:15,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560729595] [2022-11-25 15:34:15,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560729595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204706985] [2022-11-25 15:34:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:15,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:34:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:34:15,194 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:34:15,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 15:34:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:15,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:34:15,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:16,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:16,358 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret42#1.base_44| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_44|) (_ bv0 1))) (= (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_44| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-25 15:34:16,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [204706985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:16,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:16,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-25 15:34:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835330003] [2022-11-25 15:34:16,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:16,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:34:16,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:16,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:34:16,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2022-11-25 15:34:16,363 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:16,844 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2022-11-25 15:34:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:34:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2022-11-25 15:34:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:16,849 INFO L225 Difference]: With dead ends: 152 [2022-11-25 15:34:16,849 INFO L226 Difference]: Without dead ends: 142 [2022-11-25 15:34:16,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=276, Unknown=3, NotChecked=108, Total=462 [2022-11-25 15:34:16,850 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 92 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:16,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 222 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 148 Invalid, 0 Unknown, 57 Unchecked, 0.3s Time] [2022-11-25 15:34:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-25 15:34:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2022-11-25 15:34:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.212962962962963) internal successors, (131), 114 states have internal predecessors, (131), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2022-11-25 15:34:16,857 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 58 [2022-11-25 15:34:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:16,857 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2022-11-25 15:34:16,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:34:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2022-11-25 15:34:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 15:34:16,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:16,859 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:16,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:17,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:17,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1043028556, now seen corresponding path program 1 times [2022-11-25 15:34:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:17,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221523728] [2022-11-25 15:34:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:17,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:17,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:17,265 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:17,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 15:34:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:17,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 15:34:17,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:17,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:34:17,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:18,022 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_879 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_879) |c_#length|)))) is different from true [2022-11-25 15:34:18,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:18,054 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 [2022-11-25 15:34:18,065 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:18,066 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 [2022-11-25 15:34:18,226 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_880 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_880) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:34:18,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:18,248 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 [2022-11-25 15:34:18,264 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:18,264 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 [2022-11-25 15:34:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 147 trivial. 6 not checked. [2022-11-25 15:34:18,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:20,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:20,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221523728] [2022-11-25 15:34:20,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221523728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617282699] [2022-11-25 15:34:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:34:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:34:20,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:34:20,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-25 15:34:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 15:34:21,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:21,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:21,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:34:21,636 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_958 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_958) |c_#length|)))) is different from true [2022-11-25 15:34:21,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:21,657 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 [2022-11-25 15:34:21,675 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:21,675 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 [2022-11-25 15:34:21,783 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_959 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_959) |c_#length|)))) is different from true [2022-11-25 15:34:21,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:34:21,810 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 [2022-11-25 15:34:21,827 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:34:21,827 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 [2022-11-25 15:34:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 147 trivial. 6 not checked. [2022-11-25 15:34:21,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:22,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [617282699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:22,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:22,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2022-11-25 15:34:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184796079] [2022-11-25 15:34:22,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 15:34:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 15:34:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=152, Unknown=5, NotChecked=108, Total=306 [2022-11-25 15:34:22,113 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:34:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:23,306 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2022-11-25 15:34:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:34:23,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2022-11-25 15:34:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:23,308 INFO L225 Difference]: With dead ends: 178 [2022-11-25 15:34:23,308 INFO L226 Difference]: Without dead ends: 178 [2022-11-25 15:34:23,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=105, Invalid=458, Unknown=5, NotChecked=188, Total=756 [2022-11-25 15:34:23,309 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 186 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:23,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 244 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 348 Unchecked, 0.7s Time] [2022-11-25 15:34:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-25 15:34:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 128. [2022-11-25 15:34:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 114 states have internal predecessors, (129), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2022-11-25 15:34:23,316 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 60 [2022-11-25 15:34:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:23,317 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2022-11-25 15:34:23,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:34:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2022-11-25 15:34:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 15:34:23,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:23,319 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:23,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:23,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:23,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:23,725 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:23,726 INFO L85 PathProgramCache]: Analyzing trace with hash -929144456, now seen corresponding path program 1 times [2022-11-25 15:34:23,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:23,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278380386] [2022-11-25 15:34:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:23,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:23,727 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:23,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:23,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:34:23,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:24,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:24,900 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 9 [2022-11-25 15:34:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:25,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278380386] [2022-11-25 15:34:25,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278380386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:25,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:25,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-25 15:34:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222296912] [2022-11-25 15:34:25,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:25,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:34:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:34:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:34:25,444 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:34:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:28,384 INFO L93 Difference]: Finished difference Result 223 states and 251 transitions. [2022-11-25 15:34:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:34:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2022-11-25 15:34:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:28,387 INFO L225 Difference]: With dead ends: 223 [2022-11-25 15:34:28,387 INFO L226 Difference]: Without dead ends: 223 [2022-11-25 15:34:28,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2022-11-25 15:34:28,389 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 379 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:28,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 480 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 15:34:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-25 15:34:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 127. [2022-11-25 15:34:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 109 states have (on average 1.165137614678899) internal successors, (127), 113 states have internal predecessors, (127), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2022-11-25 15:34:28,396 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 62 [2022-11-25 15:34:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:28,396 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2022-11-25 15:34:28,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:34:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2022-11-25 15:34:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 15:34:28,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:28,398 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:28,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:28,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:28,613 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1261292942, now seen corresponding path program 1 times [2022-11-25 15:34:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:28,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147798245] [2022-11-25 15:34:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:28,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:28,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:28,614 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:28,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 15:34:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 15:34:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:29,096 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 15 treesize of output 11 [2022-11-25 15:34:29,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:34:29,328 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-25 15:34:29,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 15:34:29,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:29,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147798245] [2022-11-25 15:34:29,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147798245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:29,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:29,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-25 15:34:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416835174] [2022-11-25 15:34:29,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:34:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:34:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:34:29,633 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 15:34:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:31,270 INFO L93 Difference]: Finished difference Result 173 states and 195 transitions. [2022-11-25 15:34:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 15:34:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-25 15:34:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:31,272 INFO L225 Difference]: With dead ends: 173 [2022-11-25 15:34:31,272 INFO L226 Difference]: Without dead ends: 173 [2022-11-25 15:34:31,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 15:34:31,274 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 349 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:31,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 298 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 15:34:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-25 15:34:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 128. [2022-11-25 15:34:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 114 states have internal predecessors, (128), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2022-11-25 15:34:31,280 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 63 [2022-11-25 15:34:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:31,281 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2022-11-25 15:34:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 15:34:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2022-11-25 15:34:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 15:34:31,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:31,282 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:31,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:31,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:31,495 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 445375639, now seen corresponding path program 1 times [2022-11-25 15:34:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:31,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303993471] [2022-11-25 15:34:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:31,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:31,498 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:31,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:31,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 15:34:31,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:32,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:34:33,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:34:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 15:34:33,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 15:34:33,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303993471] [2022-11-25 15:34:33,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303993471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:33,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:33,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2022-11-25 15:34:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603985715] [2022-11-25 15:34:33,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 15:34:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 15:34:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:34:33,715 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:34:36,160 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] [2022-11-25 15:34:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:40,151 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-25 15:34:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 15:34:40,153 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 64 [2022-11-25 15:34:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:40,155 INFO L225 Difference]: With dead ends: 177 [2022-11-25 15:34:40,155 INFO L226 Difference]: Without dead ends: 177 [2022-11-25 15:34:40,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2022-11-25 15:34:40,157 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 372 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:40,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 316 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 529 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 15:34:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-25 15:34:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2022-11-25 15:34:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 120 states have internal predecessors, (134), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-25 15:34:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2022-11-25 15:34:40,164 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 64 [2022-11-25 15:34:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:40,164 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2022-11-25 15:34:40,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:34:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2022-11-25 15:34:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 15:34:40,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:40,166 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:40,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:40,379 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash 921743024, now seen corresponding path program 1 times [2022-11-25 15:34:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:40,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442364820] [2022-11-25 15:34:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:40,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:40,381 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:40,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-25 15:34:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:40,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 15:34:40,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:40,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:40,936 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 15 treesize of output 11 [2022-11-25 15:34:41,073 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 5 [2022-11-25 15:34:41,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:34:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:41,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:41,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:41,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442364820] [2022-11-25 15:34:41,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442364820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:41,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:41,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2022-11-25 15:34:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277544834] [2022-11-25 15:34:41,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:41,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 15:34:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 15:34:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-25 15:34:41,838 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 15:34:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:45,424 INFO L93 Difference]: Finished difference Result 191 states and 224 transitions. [2022-11-25 15:34:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 15:34:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2022-11-25 15:34:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:45,426 INFO L225 Difference]: With dead ends: 191 [2022-11-25 15:34:45,426 INFO L226 Difference]: Without dead ends: 191 [2022-11-25 15:34:45,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 15:34:45,428 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 97 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:45,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 646 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 15:34:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-25 15:34:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2022-11-25 15:34:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 141 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-25 15:34:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 190 transitions. [2022-11-25 15:34:45,435 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 190 transitions. Word has length 65 [2022-11-25 15:34:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:45,436 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 190 transitions. [2022-11-25 15:34:45,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 15:34:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 190 transitions. [2022-11-25 15:34:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 15:34:45,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:45,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:45,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:45,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:45,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1133093937, now seen corresponding path program 2 times [2022-11-25 15:34:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:45,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765127363] [2022-11-25 15:34:45,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:34:45,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:45,654 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:45,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:34:45,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:34:45,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:34:45,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:34:45,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:34:45,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:45,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765127363] [2022-11-25 15:34:45,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765127363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:45,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:45,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:34:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684355000] [2022-11-25 15:34:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:45,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:34:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:34:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:45,936 INFO L87 Difference]: Start difference. First operand 158 states and 190 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:45,985 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2022-11-25 15:34:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:34:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2022-11-25 15:34:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:45,987 INFO L225 Difference]: With dead ends: 127 [2022-11-25 15:34:45,987 INFO L226 Difference]: Without dead ends: 123 [2022-11-25 15:34:45,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:45,988 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:45,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 164 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:34:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-25 15:34:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2022-11-25 15:34:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 96 states have (on average 1.125) internal successors, (108), 102 states have internal predecessors, (108), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 15:34:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2022-11-25 15:34:45,995 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 65 [2022-11-25 15:34:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:45,995 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2022-11-25 15:34:45,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:34:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2022-11-25 15:34:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 15:34:45,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:45,997 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:46,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:34:46,212 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:34:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1490737222, now seen corresponding path program 1 times [2022-11-25 15:34:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:46,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956767422] [2022-11-25 15:34:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:46,212 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 [2022-11-25 15:34:46,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:46,213 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:34:46,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-25 15:34:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:46,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 15:34:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:46,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:34:46,965 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:34:46,966 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 [2022-11-25 15:34:47,101 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 15 treesize of output 11 [2022-11-25 15:34:47,282 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 7 treesize of output 5 [2022-11-25 15:34:51,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-25 15:34:51,628 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 [2022-11-25 15:34:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 15:34:51,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-25 15:34:52,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956767422] [2022-11-25 15:34:52,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956767422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:52,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:52,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2022-11-25 15:34:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287269641] [2022-11-25 15:34:52,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 15:34:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 15:34:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=620, Unknown=1, NotChecked=0, Total=702 [2022-11-25 15:34:52,918 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 23 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:34:54,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:34:56,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:34:59,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:35:02,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:35:04,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:35:07,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:35:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:08,741 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2022-11-25 15:35:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 15:35:08,742 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 23 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 66 [2022-11-25 15:35:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:08,743 INFO L225 Difference]: With dead ends: 129 [2022-11-25 15:35:08,743 INFO L226 Difference]: Without dead ends: 129 [2022-11-25 15:35:08,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=276, Invalid=1885, Unknown=1, NotChecked=0, Total=2162 [2022-11-25 15:35:08,745 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 117 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 30 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:08,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 401 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 740 Invalid, 6 Unknown, 0 Unchecked, 13.7s Time] [2022-11-25 15:35:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-25 15:35:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2022-11-25 15:35:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.13) internal successors, (113), 106 states have internal predecessors, (113), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 15:35:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2022-11-25 15:35:08,753 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 66 [2022-11-25 15:35:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2022-11-25 15:35:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 23 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:35:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2022-11-25 15:35:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 15:35:08,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:08,760 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:08,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:08,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:08,974 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:35:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -280378112, now seen corresponding path program 2 times [2022-11-25 15:35:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:08,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204151650] [2022-11-25 15:35:08,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:35:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:08,976 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:35:08,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:09,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:35:09,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:35:09,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 15:35:09,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:09,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:35:09,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:35:09,929 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_1481 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1481) |c_#length|)))) is different from true [2022-11-25 15:35:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:09,953 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 [2022-11-25 15:35:09,972 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:09,972 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 [2022-11-25 15:35:10,148 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1482 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1482) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:35:10,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:10,173 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 [2022-11-25 15:35:10,190 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:10,191 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 [2022-11-25 15:35:10,385 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_1483 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1483))))) is different from true [2022-11-25 15:35:10,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:10,411 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 [2022-11-25 15:35:10,427 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:10,427 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 [2022-11-25 15:35:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 151 trivial. 12 not checked. [2022-11-25 15:35:10,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:17,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:17,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204151650] [2022-11-25 15:35:17,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204151650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:17,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839600428] [2022-11-25 15:35:17,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:35:17,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:17,047 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:17,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-25 15:35:17,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:35:17,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:35:17,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 15:35:17,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:17,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:35:17,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:35:18,247 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_1569 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1569) |c_#length|)))) is different from true [2022-11-25 15:35:18,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:18,269 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 [2022-11-25 15:35:18,289 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:18,289 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 [2022-11-25 15:35:18,381 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_1570 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1570) |c_#length|)))) is different from true [2022-11-25 15:35:18,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:18,405 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 [2022-11-25 15:35:18,422 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:18,422 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 [2022-11-25 15:35:18,516 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_1571 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1571) |c_#length|)))) is different from true [2022-11-25 15:35:18,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:18,544 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 [2022-11-25 15:35:18,560 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:18,561 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 [2022-11-25 15:35:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 151 trivial. 12 not checked. [2022-11-25 15:35:18,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:18,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839600428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:18,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:18,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2022-11-25 15:35:18,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538918355] [2022-11-25 15:35:18,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 15:35:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 15:35:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=203, Unknown=8, NotChecked=198, Total=462 [2022-11-25 15:35:18,999 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:35:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:20,539 INFO L93 Difference]: Finished difference Result 178 states and 187 transitions. [2022-11-25 15:35:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:35:20,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 70 [2022-11-25 15:35:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:20,541 INFO L225 Difference]: With dead ends: 178 [2022-11-25 15:35:20,541 INFO L226 Difference]: Without dead ends: 178 [2022-11-25 15:35:20,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=119, Invalid=599, Unknown=8, NotChecked=330, Total=1056 [2022-11-25 15:35:20,542 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 172 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 708 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:20,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 407 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 497 Invalid, 0 Unknown, 708 Unchecked, 0.9s Time] [2022-11-25 15:35:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-25 15:35:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 117. [2022-11-25 15:35:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.12) internal successors, (112), 106 states have internal predecessors, (112), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 15:35:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2022-11-25 15:35:20,547 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 70 [2022-11-25 15:35:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:20,548 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2022-11-25 15:35:20,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:35:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2022-11-25 15:35:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 15:35:20,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:20,549 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:20,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Ended with exit code 0 [2022-11-25 15:35:20,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-25 15:35:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:20,963 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:35:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash -590692744, now seen corresponding path program 1 times [2022-11-25 15:35:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302642480] [2022-11-25 15:35:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:20,965 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:35:20,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:21,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:35:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-25 15:35:21,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-25 15:35:21,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:21,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302642480] [2022-11-25 15:35:21,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302642480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:21,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:21,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 15:35:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721747321] [2022-11-25 15:35:21,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:35:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:35:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:21,446 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 15:35:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:21,650 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2022-11-25 15:35:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:35:21,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 69 [2022-11-25 15:35:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:21,651 INFO L225 Difference]: With dead ends: 140 [2022-11-25 15:35:21,652 INFO L226 Difference]: Without dead ends: 140 [2022-11-25 15:35:21,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:35:21,652 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 36 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:21,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 331 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:35:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-25 15:35:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-11-25 15:35:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 113 states have internal predecessors, (119), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 15:35:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2022-11-25 15:35:21,657 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 69 [2022-11-25 15:35:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:21,657 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2022-11-25 15:35:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 15:35:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2022-11-25 15:35:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 15:35:21,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:21,659 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:21,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:21,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:21,872 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:35:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -513282356, now seen corresponding path program 1 times [2022-11-25 15:35:21,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:21,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904579086] [2022-11-25 15:35:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:21,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:21,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:21,874 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:35:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:22,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:35:22,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-25 15:35:22,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:22,227 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 15:35:22,228 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 16 treesize of output 15 [2022-11-25 15:35:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-25 15:35:22,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:22,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904579086] [2022-11-25 15:35:22,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904579086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:22,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:22,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-25 15:35:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142573609] [2022-11-25 15:35:22,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:22,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:35:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:35:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:35:22,303 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:35:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:22,429 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2022-11-25 15:35:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-25 15:35:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:22,431 INFO L225 Difference]: With dead ends: 127 [2022-11-25 15:35:22,431 INFO L226 Difference]: Without dead ends: 127 [2022-11-25 15:35:22,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:22,432 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:22,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 66 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-25 15:35:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2022-11-25 15:35:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.107843137254902) internal successors, (113), 107 states have internal predecessors, (113), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 15:35:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2022-11-25 15:35:22,438 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 73 [2022-11-25 15:35:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:22,438 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2022-11-25 15:35:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:35:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2022-11-25 15:35:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 15:35:22,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:22,439 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:22,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:22,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:22,652 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:35:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 656898895, now seen corresponding path program 1 times [2022-11-25 15:35:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429125097] [2022-11-25 15:35:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:35:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:22,654 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:35:22,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:35:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:22,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 15:35:22,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:23,713 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 15 treesize of output 11 [2022-11-25 15:35:23,915 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-11-25 15:35:23,915 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 36 treesize of output 33 [2022-11-25 15:35:24,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-25 15:35:36,474 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (exists ((|v_ULTIMATE.start_alloc_17_#t~mem41#1.base_26| (_ BitVec 32)) (v_ArrVal_1807 (_ BitVec 1))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_1807))) (and (= (select .cse0 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_26|) (_ bv0 1)) (= (store (store .cse0 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_26| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|)))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))) is different from true [2022-11-25 15:35:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-25 15:35:36,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:50,626 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_17_#t~ret39#1.base_78| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_17_#t~ret39#1.base_78|))) (= (store (store |c_#valid| |v_ULTIMATE.start_alloc_17_#t~ret39#1.base_78| (_ bv0 1)) |c_ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-25 15:35:50,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:50,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429125097] [2022-11-25 15:35:50,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429125097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:50,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1906036263] [2022-11-25 15:35:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:50,630 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:50,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:50,632 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:50,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-25 15:35:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:51,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 15:35:51,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:59,700 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 15 treesize of output 11 [2022-11-25 15:36:02,139 INFO L321 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-11-25 15:36:02,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 36 [2022-11-25 15:36:03,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-25 15:36:18,483 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_alloc_17_#t~mem41#1.base_28| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_ArrVal_1807 (_ BitVec 1))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_1807))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_28| (_ bv0 1)))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (= (store .cse0 |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select .cse1 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_28|)) (= (bvadd (select .cse0 |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv1 1)) (_ bv0 1))))))) is different from true [2022-11-25 15:36:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-25 15:36:18,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:19,378 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 24 treesize of output 22 [2022-11-25 15:36:34,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1906036263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:34,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:34,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2022-11-25 15:36:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107444545] [2022-11-25 15:36:34,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:34,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 15:36:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 15:36:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1890, Unknown=26, NotChecked=270, Total=2352 [2022-11-25 15:36:34,704 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:36:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:41,984 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2022-11-25 15:36:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 15:36:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 75 [2022-11-25 15:36:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:41,986 INFO L225 Difference]: With dead ends: 125 [2022-11-25 15:36:41,986 INFO L226 Difference]: Without dead ends: 105 [2022-11-25 15:36:41,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=384, Invalid=3634, Unknown=26, NotChecked=378, Total=4422 [2022-11-25 15:36:41,989 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 112 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:41,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 401 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 666 Invalid, 3 Unknown, 136 Unchecked, 2.2s Time] [2022-11-25 15:36:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-25 15:36:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-25 15:36:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.1111111111111112) internal successors, (100), 95 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 15:36:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2022-11-25 15:36:41,994 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 75 [2022-11-25 15:36:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:41,994 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2022-11-25 15:36:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:36:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2022-11-25 15:36:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 15:36:41,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:41,996 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:42,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:36:42,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:42,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:42,408 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:36:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1985522429, now seen corresponding path program 1 times [2022-11-25 15:36:42,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:42,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121530118] [2022-11-25 15:36:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:42,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:36:42,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:42,410 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:36:42,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:36:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:42,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:36:42,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:36:42,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:36:42,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:36:42,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121530118] [2022-11-25 15:36:42,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121530118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:42,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:42,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 15:36:42,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021208456] [2022-11-25 15:36:42,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:36:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:36:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:36:42,930 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 15:36:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:43,371 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2022-11-25 15:36:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:36:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 78 [2022-11-25 15:36:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:43,373 INFO L225 Difference]: With dead ends: 143 [2022-11-25 15:36:43,373 INFO L226 Difference]: Without dead ends: 143 [2022-11-25 15:36:43,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:36:43,375 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 196 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:43,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 258 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:36:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-25 15:36:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 116. [2022-11-25 15:36:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 105 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 15:36:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2022-11-25 15:36:43,379 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 78 [2022-11-25 15:36:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:43,380 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2022-11-25 15:36:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 15:36:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2022-11-25 15:36:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 15:36:43,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:43,381 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:43,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:36:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:36:43,595 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:36:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1246142796, now seen corresponding path program 3 times [2022-11-25 15:36:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514906969] [2022-11-25 15:36:43,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:36:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:36:43,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:43,597 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:36:43,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:36:43,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:36:43,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 15:36:43,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:43,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:36:43,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:36:44,604 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2072 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2072) |c_#length|)))) is different from true [2022-11-25 15:36:44,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:44,630 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 [2022-11-25 15:36:44,654 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:44,654 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 [2022-11-25 15:36:44,853 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2073 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2073))))) is different from true [2022-11-25 15:36:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:44,878 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 [2022-11-25 15:36:44,893 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:44,893 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 [2022-11-25 15:36:45,096 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2074 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2074) |c_#length|)))) is different from true [2022-11-25 15:36:45,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:45,115 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 [2022-11-25 15:36:45,133 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:45,133 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 [2022-11-25 15:36:45,332 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2075 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2075) |c_#length|)))) is different from true [2022-11-25 15:36:45,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:45,356 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 [2022-11-25 15:36:45,375 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:45,375 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 [2022-11-25 15:36:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 157 trivial. 20 not checked. [2022-11-25 15:36:45,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:50,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:36:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514906969] [2022-11-25 15:36:50,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514906969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [859536211] [2022-11-25 15:36:50,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:36:50,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:50,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:36:50,115 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:36:50,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-25 15:36:50,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:36:50,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:50,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 15:36:50,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:50,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:36:50,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:36:51,283 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:51,283 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 [2022-11-25 15:36:51,302 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 [2022-11-25 15:36:51,655 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:51,655 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 [2022-11-25 15:36:51,665 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 [2022-11-25 15:36:51,915 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2173 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2173))))) is different from true [2022-11-25 15:36:51,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:51,946 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 [2022-11-25 15:36:51,965 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:51,965 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 [2022-11-25 15:36:52,095 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_2174 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_2174) |c_#length|)))) is different from true [2022-11-25 15:36:52,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:52,121 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 [2022-11-25 15:36:52,142 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:52,142 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 [2022-11-25 15:36:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 159 trivial. 14 not checked. [2022-11-25 15:36:52,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:54,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [859536211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:54,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:54,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 26 [2022-11-25 15:36:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795064687] [2022-11-25 15:36:54,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 15:36:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 15:36:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=444, Unknown=7, NotChecked=282, Total=812 [2022-11-25 15:36:54,655 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-25 15:36:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:56,889 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2022-11-25 15:36:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 15:36:56,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 80 [2022-11-25 15:36:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:56,891 INFO L225 Difference]: With dead ends: 170 [2022-11-25 15:36:56,891 INFO L226 Difference]: Without dead ends: 170 [2022-11-25 15:36:56,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=175, Invalid=1248, Unknown=7, NotChecked=462, Total=1892 [2022-11-25 15:36:56,892 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 186 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 17 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 678 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:56,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 489 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 689 Invalid, 13 Unknown, 678 Unchecked, 1.3s Time] [2022-11-25 15:36:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-25 15:36:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 120. [2022-11-25 15:36:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 108 states have internal predecessors, (113), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-25 15:36:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2022-11-25 15:36:56,897 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 80 [2022-11-25 15:36:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:56,898 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2022-11-25 15:36:56,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 24 states have internal predecessors, (52), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-25 15:36:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2022-11-25 15:36:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 15:36:56,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:56,899 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:56,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:57,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Ended with exit code 0 [2022-11-25 15:36:57,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:36:57,305 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:36:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1176035772, now seen corresponding path program 2 times [2022-11-25 15:36:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142763636] [2022-11-25 15:36:57,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:36:57,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:36:57,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:57,311 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:36:57,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 15:36:57,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:36:57,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:57,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:36:57,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 15:36:58,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:58,698 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 34 treesize of output 30 [2022-11-25 15:37:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 15:37:00,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:00,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142763636] [2022-11-25 15:37:00,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142763636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:37:00,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:00,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-11-25 15:37:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360828973] [2022-11-25 15:37:00,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:00,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 15:37:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 15:37:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:37:00,943 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:37:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:11,389 INFO L93 Difference]: Finished difference Result 305 states and 320 transitions. [2022-11-25 15:37:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 15:37:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2022-11-25 15:37:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:11,393 INFO L225 Difference]: With dead ends: 305 [2022-11-25 15:37:11,394 INFO L226 Difference]: Without dead ends: 305 [2022-11-25 15:37:11,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=484, Invalid=1772, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 15:37:11,395 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 877 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:11,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 495 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 15:37:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-25 15:37:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 153. [2022-11-25 15:37:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 135 states have (on average 1.162962962962963) internal successors, (157), 139 states have internal predecessors, (157), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:37:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2022-11-25 15:37:11,403 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 79 [2022-11-25 15:37:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:11,404 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2022-11-25 15:37:11,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:37:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2022-11-25 15:37:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 15:37:11,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:11,405 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:11,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:11,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:11,620 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:37:11,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2097370558, now seen corresponding path program 1 times [2022-11-25 15:37:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650768647] [2022-11-25 15:37:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:11,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:11,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:11,624 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:37:11,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-25 15:37:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:12,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 15:37:12,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:12,195 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 15 treesize of output 11 [2022-11-25 15:37:12,459 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 28 treesize of output 27 [2022-11-25 15:37:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:12,800 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 [2022-11-25 15:37:12,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:37:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 15:37:12,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 15:37:13,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650768647] [2022-11-25 15:37:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650768647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:37:13,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:13,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2022-11-25 15:37:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859550211] [2022-11-25 15:37:13,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 15:37:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 15:37:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:37:13,585 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:17,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:37:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:18,502 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2022-11-25 15:37:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 15:37:18,503 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 80 [2022-11-25 15:37:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:18,504 INFO L225 Difference]: With dead ends: 198 [2022-11-25 15:37:18,504 INFO L226 Difference]: Without dead ends: 198 [2022-11-25 15:37:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=358, Invalid=1994, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 15:37:18,506 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 490 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:18,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 492 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 15:37:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-25 15:37:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 160. [2022-11-25 15:37:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 146 states have internal predecessors, (166), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:37:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 187 transitions. [2022-11-25 15:37:18,514 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 187 transitions. Word has length 80 [2022-11-25 15:37:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:18,514 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 187 transitions. [2022-11-25 15:37:18,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 187 transitions. [2022-11-25 15:37:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 15:37:18,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:18,516 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:18,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:18,733 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:37:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -593977757, now seen corresponding path program 1 times [2022-11-25 15:37:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8358493] [2022-11-25 15:37:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:18,734 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 [2022-11-25 15:37:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:18,735 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:37:18,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-25 15:37:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 15:37:19,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:19,351 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 15 treesize of output 11 [2022-11-25 15:37:19,673 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 28 treesize of output 27 [2022-11-25 15:37:20,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:20,035 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 [2022-11-25 15:37:20,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:37:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-25 15:37:20,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 15:37:20,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8358493] [2022-11-25 15:37:20,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8358493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:37:20,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:20,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 22 [2022-11-25 15:37:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618937733] [2022-11-25 15:37:20,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 15:37:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 15:37:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:37:20,923 INFO L87 Difference]: Start difference. First operand 160 states and 187 transitions. Second operand has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:26,824 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] [2022-11-25 15:37:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:28,606 INFO L93 Difference]: Finished difference Result 196 states and 218 transitions. [2022-11-25 15:37:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 15:37:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 81 [2022-11-25 15:37:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:28,610 INFO L225 Difference]: With dead ends: 196 [2022-11-25 15:37:28,610 INFO L226 Difference]: Without dead ends: 196 [2022-11-25 15:37:28,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=340, Invalid=2110, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 15:37:28,612 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 443 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:28,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 390 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 727 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 15:37:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-25 15:37:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 161. [2022-11-25 15:37:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 147 states have internal predecessors, (166), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:37:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2022-11-25 15:37:28,617 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 81 [2022-11-25 15:37:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:28,618 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2022-11-25 15:37:28,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2022-11-25 15:37:28,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 15:37:28,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:28,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:28,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:28,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:28,819 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:37:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1233441180, now seen corresponding path program 1 times [2022-11-25 15:37:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232499067] [2022-11-25 15:37:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:28,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:28,821 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:37:28,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-25 15:37:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:29,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 15:37:29,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:29,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:37:29,529 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 15 treesize of output 11 [2022-11-25 15:37:29,675 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 5 [2022-11-25 15:37:29,809 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:37:29,809 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 28 treesize of output 45 [2022-11-25 15:37:30,006 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 45 treesize of output 35 [2022-11-25 15:37:30,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:37:30,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:30,763 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 26 treesize of output 32 [2022-11-25 15:37:30,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:30,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:37:30,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:37:30,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-11-25 15:37:30,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:37:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-25 15:37:31,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:31,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:31,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232499067] [2022-11-25 15:37:31,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232499067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1347489141] [2022-11-25 15:37:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:31,907 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:37:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:37:31,908 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:37:31,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-25 15:37:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 15:37:33,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:33,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:37:33,845 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 15 treesize of output 11 [2022-11-25 15:37:33,890 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 5 [2022-11-25 15:37:33,987 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:37:33,987 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 28 treesize of output 45 [2022-11-25 15:37:34,056 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 45 treesize of output 35 [2022-11-25 15:37:34,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:37:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:34,402 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 26 treesize of output 32 [2022-11-25 15:37:34,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:34,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:37:34,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:37:34,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-11-25 15:37:34,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:37:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-25 15:37:34,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:34,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1347489141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:34,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:34,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2022-11-25 15:37:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138459784] [2022-11-25 15:37:34,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 15:37:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 15:37:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-11-25 15:37:34,829 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 21 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:37:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:37,226 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2022-11-25 15:37:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 15:37:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 21 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 82 [2022-11-25 15:37:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:37,227 INFO L225 Difference]: With dead ends: 165 [2022-11-25 15:37:37,227 INFO L226 Difference]: Without dead ends: 165 [2022-11-25 15:37:37,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 162 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2022-11-25 15:37:37,228 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 72 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:37,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 385 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 726 Invalid, 2 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 15:37:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-25 15:37:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-25 15:37:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 150 states have internal predecessors, (169), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:37:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 190 transitions. [2022-11-25 15:37:37,233 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 190 transitions. Word has length 82 [2022-11-25 15:37:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:37,234 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 190 transitions. [2022-11-25 15:37:37,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 21 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 15:37:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 190 transitions. [2022-11-25 15:37:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 15:37:37,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:37,235 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:37,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-25 15:37:37,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:37,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:37:37,656 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:37:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash 418029190, now seen corresponding path program 1 times [2022-11-25 15:37:37,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:37,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194205003] [2022-11-25 15:37:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:37,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:37:37,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:37,661 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:37:37,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-25 15:37:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:38,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 15:37:38,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:38,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:37:38,389 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:37:38,389 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 [2022-11-25 15:37:38,479 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 15 treesize of output 11 [2022-11-25 15:37:40,593 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_57| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_57|) (_ bv0 32)) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_57|))) is different from true [2022-11-25 15:37:40,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:40,695 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 24 treesize of output 23 [2022-11-25 15:37:42,779 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_58| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_58|) (_ bv0 32)) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_58|))) is different from true [2022-11-25 15:37:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:37:42,983 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 24 treesize of output 23 [2022-11-25 15:37:43,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-25 15:37:43,230 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 [2022-11-25 15:37:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 16 not checked. [2022-11-25 15:37:43,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:43,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-25 15:37:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 15:37:44,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194205003] [2022-11-25 15:37:44,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194205003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:37:44,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:44,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 31 [2022-11-25 15:37:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360748556] [2022-11-25 15:37:44,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 15:37:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 15:37:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=794, Unknown=2, NotChecked=114, Total=992 [2022-11-25 15:37:44,707 INFO L87 Difference]: Start difference. First operand 165 states and 190 transitions. Second operand has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 28 states have internal predecessors, (85), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:38:02,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:38:03,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:38:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:05,082 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2022-11-25 15:38:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 15:38:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 28 states have internal predecessors, (85), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 83 [2022-11-25 15:38:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:05,084 INFO L225 Difference]: With dead ends: 183 [2022-11-25 15:38:05,085 INFO L226 Difference]: Without dead ends: 183 [2022-11-25 15:38:05,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=384, Invalid=3042, Unknown=4, NotChecked=230, Total=3660 [2022-11-25 15:38:05,086 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 194 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:05,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 549 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 968 Invalid, 0 Unknown, 203 Unchecked, 5.1s Time] [2022-11-25 15:38:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-25 15:38:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2022-11-25 15:38:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 154 states have internal predecessors, (172), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:38:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2022-11-25 15:38:05,092 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 83 [2022-11-25 15:38:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:05,092 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2022-11-25 15:38:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 28 states have internal predecessors, (85), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:38:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2022-11-25 15:38:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 15:38:05,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:05,094 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:05,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-25 15:38:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:05,312 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:38:05,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1306673498, now seen corresponding path program 2 times [2022-11-25 15:38:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:05,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683314810] [2022-11-25 15:38:05,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:38:05,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:05,313 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:38:05,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-25 15:38:05,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:38:05,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:05,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:38:05,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:38:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:38:06,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:06,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683314810] [2022-11-25 15:38:06,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683314810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:38:06,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:06,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 15:38:06,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787287838] [2022-11-25 15:38:06,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:38:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:06,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:38:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:38:06,062 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 15:38:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:06,597 INFO L93 Difference]: Finished difference Result 176 states and 192 transitions. [2022-11-25 15:38:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:38:06,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 87 [2022-11-25 15:38:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:06,599 INFO L225 Difference]: With dead ends: 176 [2022-11-25 15:38:06,599 INFO L226 Difference]: Without dead ends: 176 [2022-11-25 15:38:06,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:38:06,600 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 65 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:06,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 483 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:38:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-25 15:38:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 161. [2022-11-25 15:38:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 146 states have internal predecessors, (158), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-25 15:38:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 179 transitions. [2022-11-25 15:38:06,605 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 179 transitions. Word has length 87 [2022-11-25 15:38:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:06,605 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 179 transitions. [2022-11-25 15:38:06,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 15:38:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 179 transitions. [2022-11-25 15:38:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 15:38:06,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:06,606 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:06,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:06,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:06,807 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:38:06,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash -891953512, now seen corresponding path program 1 times [2022-11-25 15:38:06,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:06,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779009879] [2022-11-25 15:38:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:06,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:06,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:06,811 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:38:06,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-25 15:38:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:07,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:38:07,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-25 15:38:07,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-25 15:38:07,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779009879] [2022-11-25 15:38:07,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779009879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:38:07,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:07,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 15:38:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767089160] [2022-11-25 15:38:07,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:38:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:38:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:38:07,926 INFO L87 Difference]: Start difference. First operand 161 states and 179 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 15:38:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:08,933 INFO L93 Difference]: Finished difference Result 408 states and 441 transitions. [2022-11-25 15:38:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:38:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 89 [2022-11-25 15:38:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:08,934 INFO L225 Difference]: With dead ends: 408 [2022-11-25 15:38:08,935 INFO L226 Difference]: Without dead ends: 408 [2022-11-25 15:38:08,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:38:08,935 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 762 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:08,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 595 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:38:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-25 15:38:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 184. [2022-11-25 15:38:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 161 states have (on average 1.1180124223602483) internal successors, (180), 165 states have internal predecessors, (180), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-25 15:38:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-11-25 15:38:08,942 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 89 [2022-11-25 15:38:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:08,943 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-11-25 15:38:08,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 15:38:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-11-25 15:38:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 15:38:08,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:08,944 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:08,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:09,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:09,157 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:38:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash -586455192, now seen corresponding path program 4 times [2022-11-25 15:38:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:09,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631148433] [2022-11-25 15:38:09,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:38:09,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:09,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:09,160 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:38:09,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-25 15:38:09,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:38:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:09,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-25 15:38:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:09,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:38:09,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:38:10,168 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3013 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3013) |c_#length|)))) is different from true [2022-11-25 15:38:10,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:10,194 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 [2022-11-25 15:38:10,213 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:10,213 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 [2022-11-25 15:38:10,396 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3014 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3014))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:38:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:10,419 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 [2022-11-25 15:38:10,438 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:10,438 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 [2022-11-25 15:38:10,599 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3015 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3015) |c_#length|)))) is different from true [2022-11-25 15:38:10,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:10,624 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 [2022-11-25 15:38:10,640 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:10,640 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 [2022-11-25 15:38:10,845 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3016 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3016) |c_#length|)))) is different from true [2022-11-25 15:38:10,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:10,868 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 [2022-11-25 15:38:10,886 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:10,887 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 [2022-11-25 15:38:11,070 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3017 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3017))))) is different from true [2022-11-25 15:38:11,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:11,093 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 [2022-11-25 15:38:11,110 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:11,110 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 [2022-11-25 15:38:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 165 trivial. 30 not checked. [2022-11-25 15:38:11,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:15,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631148433] [2022-11-25 15:38:15,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631148433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [889047573] [2022-11-25 15:38:15,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:38:15,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:38:15,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:38:15,725 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:38:15,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-11-25 15:38:16,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:38:16,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:16,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-25 15:38:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:16,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:38:16,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:38:17,043 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3119 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3119) |c_#length|)))) is different from true [2022-11-25 15:38:17,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:17,065 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 [2022-11-25 15:38:17,081 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:17,082 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 [2022-11-25 15:38:17,170 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3120 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3120) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:38:17,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:17,198 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 [2022-11-25 15:38:17,216 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:17,216 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 [2022-11-25 15:38:17,316 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3121 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3121))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:38:17,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:17,337 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 [2022-11-25 15:38:17,351 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:17,352 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 [2022-11-25 15:38:17,451 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3122 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3122) |c_#length|)))) is different from true [2022-11-25 15:38:17,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:17,469 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 [2022-11-25 15:38:17,485 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:17,485 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 [2022-11-25 15:38:17,569 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3123 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3123))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:38:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:17,588 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 [2022-11-25 15:38:17,605 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:17,606 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 [2022-11-25 15:38:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 165 trivial. 30 not checked. [2022-11-25 15:38:17,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:17,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [889047573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:17,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:17,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 27 [2022-11-25 15:38:17,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611346492] [2022-11-25 15:38:17,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:17,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 15:38:17,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 15:38:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=333, Unknown=10, NotChecked=450, Total=870 [2022-11-25 15:38:17,992 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand has 28 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-25 15:38:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:20,511 INFO L93 Difference]: Finished difference Result 264 states and 292 transitions. [2022-11-25 15:38:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 15:38:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 90 [2022-11-25 15:38:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:20,513 INFO L225 Difference]: With dead ends: 264 [2022-11-25 15:38:20,513 INFO L226 Difference]: Without dead ends: 264 [2022-11-25 15:38:20,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=169, Invalid=1051, Unknown=10, NotChecked=750, Total=1980 [2022-11-25 15:38:20,514 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 211 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1270 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:20,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 684 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 768 Invalid, 0 Unknown, 1270 Unchecked, 1.5s Time] [2022-11-25 15:38:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-25 15:38:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 184. [2022-11-25 15:38:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 161 states have (on average 1.1118012422360248) internal successors, (179), 165 states have internal predecessors, (179), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-25 15:38:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2022-11-25 15:38:20,520 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 90 [2022-11-25 15:38:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:20,520 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2022-11-25 15:38:20,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 27 states have internal predecessors, (57), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-25 15:38:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2022-11-25 15:38:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 15:38:20,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:20,521 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:20,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:20,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-25 15:38:20,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:20,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:38:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1366153752, now seen corresponding path program 2 times [2022-11-25 15:38:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:20,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925682842] [2022-11-25 15:38:20,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:38:20,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:20,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:20,938 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:38:20,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-25 15:38:21,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:38:21,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:21,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 15:38:21,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:21,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:38:21,750 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 15 treesize of output 11 [2022-11-25 15:38:21,888 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 5 [2022-11-25 15:38:22,019 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-25 15:38:22,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-25 15:38:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:22,202 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 39 treesize of output 32 [2022-11-25 15:38:22,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:38:22,956 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 28 treesize of output 34 [2022-11-25 15:38:22,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:22,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:38:22,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 32 [2022-11-25 15:38:23,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:38:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-25 15:38:23,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:24,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925682842] [2022-11-25 15:38:24,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925682842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:24,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703227236] [2022-11-25 15:38:24,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:38:24,256 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:38:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:38:24,257 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:38:24,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-25 15:38:24,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 15:38:24,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777332161] [2022-11-25 15:38:24,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:38:24,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:38:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:38:24,898 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:38:24,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 1 [2022-11-25 15:38:24,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-25 15:38:25,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:38:25,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:25,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-25 15:38:25,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:25,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:38:26,210 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 15 treesize of output 11 [2022-11-25 15:38:26,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:38:26,929 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 15 treesize of output 11 [2022-11-25 15:38:27,255 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 5 [2022-11-25 15:38:27,346 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:38:27,346 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 28 treesize of output 45 [2022-11-25 15:38:27,793 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 45 treesize of output 35 [2022-11-25 15:38:28,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:38:28,629 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 28 treesize of output 34 [2022-11-25 15:38:28,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:28,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:38:28,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 32 [2022-11-25 15:38:28,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:38:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 98 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-25 15:38:28,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:30,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777332161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:30,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:30,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 43 [2022-11-25 15:38:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323052718] [2022-11-25 15:38:30,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-25 15:38:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-25 15:38:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2768, Unknown=0, NotChecked=0, Total=2970 [2022-11-25 15:38:30,241 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:38:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:35,378 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2022-11-25 15:38:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 15:38:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 92 [2022-11-25 15:38:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:35,380 INFO L225 Difference]: With dead ends: 203 [2022-11-25 15:38:35,380 INFO L226 Difference]: Without dead ends: 203 [2022-11-25 15:38:35,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=440, Invalid=5566, Unknown=0, NotChecked=0, Total=6006 [2022-11-25 15:38:35,382 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 99 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:35,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 762 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1443 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 15:38:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-25 15:38:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-25 15:38:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 179 states have (on average 1.106145251396648) internal successors, (198), 182 states have internal predecessors, (198), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-25 15:38:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2022-11-25 15:38:35,389 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 92 [2022-11-25 15:38:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:35,389 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2022-11-25 15:38:35,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:38:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2022-11-25 15:38:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 15:38:35,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:35,391 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:35,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-25 15:38:35,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-11-25 15:38:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:38:35,800 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:38:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1739385347, now seen corresponding path program 2 times [2022-11-25 15:38:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:35,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310278307] [2022-11-25 15:38:35,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:38:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:38:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:35,802 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:38:35,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-25 15:38:36,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:38:36,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:36,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 15:38:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:36,931 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 15 treesize of output 11 [2022-11-25 15:38:37,162 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-11-25 15:38:37,162 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 36 treesize of output 33 [2022-11-25 15:38:37,499 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 74 treesize of output 55 [2022-11-25 15:38:37,871 INFO L321 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-11-25 15:38:37,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 132 [2022-11-25 15:38:38,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:38,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:38:38,678 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:38:38,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 65 [2022-11-25 15:38:43,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-11-25 15:38:58,660 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (exists ((|v_ULTIMATE.start_alloc_17_#t~mem41#1.base_59| (_ BitVec 32)) (v_ArrVal_3518 (_ BitVec 1)) (v_arrayElimCell_171 (_ BitVec 32)) (v_ArrVal_3530 (_ BitVec 1))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_3530))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_59| v_ArrVal_3518))) (and (= |c_#valid| (store (store (store .cse0 v_arrayElimCell_171 (_ bv0 1)) |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_59| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1))) (= (_ bv0 1) (select .cse0 v_arrayElimCell_171)) (= (select .cse1 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_59|) (_ bv0 1)))))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))) is different from true [2022-11-25 15:38:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-25 15:38:58,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:27,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:27,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310278307] [2022-11-25 15:39:27,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310278307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:27,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059309868] [2022-11-25 15:39:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:39:27,899 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:39:27,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:39:27,900 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:39:27,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-11-25 15:39:30,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:39:30,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:39:30,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-25 15:39:30,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:44,251 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 15 treesize of output 11 [2022-11-25 15:39:44,878 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-25 15:39:44,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2022-11-25 15:39:45,722 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 74 treesize of output 55 [2022-11-25 15:39:46,566 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-25 15:39:46,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 45 [2022-11-25 15:40:00,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:40:00,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 55 [2022-11-25 15:40:00,960 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 51 treesize of output 35 [2022-11-25 15:40:07,806 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_arrayElimCell_181 (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_#t~mem41#1.base_63| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv1 1)))) (let ((.cse1 (store .cse0 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_63| (_ bv1 1)))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (= (select .cse0 |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_63|) (_ bv0 1)) (= (select .cse1 v_arrayElimCell_181) (_ bv0 1)) (= |c_#valid| (store (store (store .cse1 v_arrayElimCell_181 (_ bv0 1)) |v_ULTIMATE.start_alloc_17_#t~mem41#1.base_63| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)))))))) is different from true [2022-11-25 15:40:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-25 15:40:07,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:40:35,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059309868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:40:35,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:40:35,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 49 [2022-11-25 15:40:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198864113] [2022-11-25 15:40:35,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:40:35,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-25 15:40:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:40:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-25 15:40:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3424, Unknown=33, NotChecked=238, Total=3906 [2022-11-25 15:40:35,205 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 50 states, 47 states have (on average 2.25531914893617) internal successors, (106), 44 states have internal predecessors, (106), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 15:40:37,872 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] [2022-11-25 15:40:42,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:46,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:48,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:50,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:52,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:54,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:56,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:40:58,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:00,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:05,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:10,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:12,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:16,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:29,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:36,659 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 65 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 15:41:53,059 WARN L233 SmtUtils]: Spent 15.72s on a formula simplification. DAG size of input: 82 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 15:41:54,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:41:55,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:42:19,548 WARN L233 SmtUtils]: Spent 13.19s on a formula simplification. DAG size of input: 74 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 15:42:23,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:42:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:42:27,428 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2022-11-25 15:42:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 15:42:27,429 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 2.25531914893617) internal successors, (106), 44 states have internal predecessors, (106), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 92 [2022-11-25 15:42:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:42:27,430 INFO L225 Difference]: With dead ends: 210 [2022-11-25 15:42:27,430 INFO L226 Difference]: Without dead ends: 183 [2022-11-25 15:42:27,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 189 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 183.9s TimeCoverageRelationStatistics Valid=455, Invalid=6997, Unknown=38, NotChecked=342, Total=7832 [2022-11-25 15:42:27,431 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 116 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 37 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:42:27,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 510 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1430 Invalid, 22 Unknown, 142 Unchecked, 40.8s Time] [2022-11-25 15:42:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-25 15:42:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-11-25 15:42:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 162 states have internal predecessors, (176), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:42:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2022-11-25 15:42:27,436 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 92 [2022-11-25 15:42:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:42:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2022-11-25 15:42:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 2.25531914893617) internal successors, (106), 44 states have internal predecessors, (106), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 15:42:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2022-11-25 15:42:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 15:42:27,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:42:27,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:42:27,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2022-11-25 15:42:27,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-25 15:42:27,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:27,848 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:42:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:42:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -730597920, now seen corresponding path program 3 times [2022-11-25 15:42:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:42:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314463796] [2022-11-25 15:42:27,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:42:27,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:42:27,849 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:42:27,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-25 15:42:28,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 15:42:28,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:42:28,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:42:28,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:42:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:42:30,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:42:32,485 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 9 [2022-11-25 15:42:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-25 15:42:32,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:42:32,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314463796] [2022-11-25 15:42:32,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314463796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:42:32,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:42:32,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2022-11-25 15:42:32,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788858656] [2022-11-25 15:42:32,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:42:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 15:42:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:42:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 15:42:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-11-25 15:42:32,595 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:42:38,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:42:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:42:40,723 INFO L93 Difference]: Finished difference Result 210 states and 231 transitions. [2022-11-25 15:42:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:42:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 96 [2022-11-25 15:42:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:42:40,725 INFO L225 Difference]: With dead ends: 210 [2022-11-25 15:42:40,725 INFO L226 Difference]: Without dead ends: 210 [2022-11-25 15:42:40,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2022-11-25 15:42:40,725 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 356 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:42:40,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 547 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-25 15:42:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-25 15:42:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 172. [2022-11-25 15:42:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 149 states have (on average 1.1140939597315436) internal successors, (166), 154 states have internal predecessors, (166), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:42:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2022-11-25 15:42:40,730 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 96 [2022-11-25 15:42:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:42:40,731 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2022-11-25 15:42:40,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:42:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2022-11-25 15:42:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 15:42:40,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:42:40,732 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:42:40,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-25 15:42:40,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:40,947 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:42:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:42:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1173699034, now seen corresponding path program 3 times [2022-11-25 15:42:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:42:40,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772675606] [2022-11-25 15:42:40,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:42:40,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:42:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:42:40,950 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:42:40,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-25 15:42:41,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:42:41,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:42:41,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 15:42:41,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:42:41,590 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 15 treesize of output 11 [2022-11-25 15:42:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:42:41,816 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 [2022-11-25 15:42:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:42:42,009 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 [2022-11-25 15:42:42,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:42:42,262 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 [2022-11-25 15:42:42,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:42:42,375 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 [2022-11-25 15:42:42,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:42:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-25 15:42:42,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:42:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-25 15:42:44,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:42:44,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772675606] [2022-11-25 15:42:44,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772675606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:42:44,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:42:44,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2022-11-25 15:42:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143583736] [2022-11-25 15:42:44,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:42:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 15:42:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:42:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 15:42:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-25 15:42:44,325 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand has 29 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 26 states have internal predecessors, (97), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 15:42:57,328 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 [] [2022-11-25 15:43:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:05,923 INFO L93 Difference]: Finished difference Result 312 states and 336 transitions. [2022-11-25 15:43:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-25 15:43:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 26 states have internal predecessors, (97), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 97 [2022-11-25 15:43:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:05,932 INFO L225 Difference]: With dead ends: 312 [2022-11-25 15:43:05,932 INFO L226 Difference]: Without dead ends: 312 [2022-11-25 15:43:05,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 165 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=1437, Invalid=7305, Unknown=0, NotChecked=0, Total=8742 [2022-11-25 15:43:05,933 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 950 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 110 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:05,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 641 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-25 15:43:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-25 15:43:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 204. [2022-11-25 15:43:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 185 states have internal predecessors, (212), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:43:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 241 transitions. [2022-11-25 15:43:05,937 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 241 transitions. Word has length 97 [2022-11-25 15:43:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:05,938 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 241 transitions. [2022-11-25 15:43:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 26 states have internal predecessors, (97), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 15:43:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 241 transitions. [2022-11-25 15:43:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:43:05,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:05,938 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:05,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-25 15:43:06,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:06,139 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:43:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1547771676, now seen corresponding path program 5 times [2022-11-25 15:43:06,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:43:06,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456010044] [2022-11-25 15:43:06,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:43:06,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:06,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:43:06,141 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:43:06,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-25 15:43:06,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-25 15:43:06,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:43:06,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-25 15:43:06,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:06,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:43:07,367 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3958 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3958) |c_#length|)))) is different from true [2022-11-25 15:43:07,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:07,393 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 [2022-11-25 15:43:07,413 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:07,414 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 [2022-11-25 15:43:07,590 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3959 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3959) |c_#length|)))) is different from true [2022-11-25 15:43:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:07,611 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 [2022-11-25 15:43:07,629 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:07,629 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 [2022-11-25 15:43:07,800 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3960 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3960) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:43:07,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:07,829 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 [2022-11-25 15:43:07,851 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:07,852 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 [2022-11-25 15:43:08,017 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3961 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3961))))) is different from true [2022-11-25 15:43:08,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:08,035 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 [2022-11-25 15:43:08,048 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:08,048 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 [2022-11-25 15:43:08,227 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_3962 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3962))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:43:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:08,243 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 [2022-11-25 15:43:08,265 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:08,265 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 [2022-11-25 15:43:08,463 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_3963 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_3963) |c_#length|)))) is different from true [2022-11-25 15:43:08,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:08,498 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 [2022-11-25 15:43:08,513 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:08,514 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 [2022-11-25 15:43:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 85 proven. 91 refuted. 0 times theorem prover too weak. 96 trivial. 42 not checked. [2022-11-25 15:43:08,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:13,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:43:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456010044] [2022-11-25 15:43:13,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456010044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:43:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145912586] [2022-11-25 15:43:13,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:43:13,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:43:13,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:43:13,207 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:43:13,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2022-11-25 15:43:16,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-25 15:43:16,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:43:16,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 15:43:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:16,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:43:17,084 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4072 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_4072))) (exists ((v_ArrVal_4073 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4073))))) is different from true [2022-11-25 15:43:17,141 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:43:17,141 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 [2022-11-25 15:43:17,148 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 [2022-11-25 15:43:17,271 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4075 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_4075) |c_#valid|)) (exists ((v_ArrVal_4074 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4074) |c_#length|)))) is different from true [2022-11-25 15:43:17,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:17,299 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 [2022-11-25 15:43:17,333 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:43:17,333 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 [2022-11-25 15:43:17,484 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4077 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_4077))) (exists ((v_ArrVal_4076 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4076) |c_#length|)))) is different from true [2022-11-25 15:43:17,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:17,508 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 [2022-11-25 15:43:17,541 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:43:17,541 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 [2022-11-25 15:43:17,661 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4078 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4078))) (exists ((v_ArrVal_4079 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_4079) |c_#valid|)))) is different from true [2022-11-25 15:43:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:17,690 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 [2022-11-25 15:43:17,727 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:43:17,727 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 [2022-11-25 15:43:17,835 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4080 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4080) |c_#length|)))) is different from true [2022-11-25 15:43:17,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:17,869 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 [2022-11-25 15:43:17,885 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:17,885 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 [2022-11-25 15:43:17,965 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_4081 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_4081))))) is different from true [2022-11-25 15:43:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:17,985 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 [2022-11-25 15:43:18,001 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:43:18,001 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 [2022-11-25 15:43:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 25 proven. 91 refuted. 0 times theorem prover too weak. 156 trivial. 42 not checked. [2022-11-25 15:43:18,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:20,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145912586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:43:20,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:43:20,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 32 [2022-11-25 15:43:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029489712] [2022-11-25 15:43:20,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:43:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 15:43:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:43:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 15:43:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=449, Unknown=13, NotChecked=636, Total=1190 [2022-11-25 15:43:20,428 INFO L87 Difference]: Start difference. First operand 204 states and 241 transitions. Second operand has 33 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 32 states have internal predecessors, (82), 7 states have call successors, (7), 2 states have call predecessors, (7), 13 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-25 15:43:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:43:23,390 INFO L93 Difference]: Finished difference Result 309 states and 351 transitions. [2022-11-25 15:43:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:43:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 32 states have internal predecessors, (82), 7 states have call successors, (7), 2 states have call predecessors, (7), 13 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) Word has length 100 [2022-11-25 15:43:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:43:23,391 INFO L225 Difference]: With dead ends: 309 [2022-11-25 15:43:23,391 INFO L226 Difference]: Without dead ends: 309 [2022-11-25 15:43:23,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=237, Invalid=1358, Unknown=13, NotChecked=1044, Total=2652 [2022-11-25 15:43:23,392 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 498 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1752 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:43:23,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 704 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1039 Invalid, 0 Unknown, 1752 Unchecked, 1.6s Time] [2022-11-25 15:43:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-25 15:43:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 204. [2022-11-25 15:43:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 179 states have (on average 1.1787709497206704) internal successors, (211), 185 states have internal predecessors, (211), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:43:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 240 transitions. [2022-11-25 15:43:23,398 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 240 transitions. Word has length 100 [2022-11-25 15:43:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:43:23,398 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 240 transitions. [2022-11-25 15:43:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 32 states have internal predecessors, (82), 7 states have call successors, (7), 2 states have call predecessors, (7), 13 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-25 15:43:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 240 transitions. [2022-11-25 15:43:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:43:23,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:43:23,399 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:43:23,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2022-11-25 15:43:23,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-25 15:43:23,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:23,810 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:43:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:43:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2024931585, now seen corresponding path program 2 times [2022-11-25 15:43:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:43:23,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541498882] [2022-11-25 15:43:23,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:43:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:43:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:43:23,812 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:43:23,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-25 15:43:24,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:43:24,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:43:24,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 15:43:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:43:24,568 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 15 treesize of output 11 [2022-11-25 15:43:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:24,807 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 [2022-11-25 15:43:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:25,010 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 [2022-11-25 15:43:25,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:25,333 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 [2022-11-25 15:43:25,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:43:25,477 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 [2022-11-25 15:43:25,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 15:43:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 12 proven. 59 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-25 15:43:25,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:43:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-25 15:43:27,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:43:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541498882] [2022-11-25 15:43:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541498882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:43:27,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:43:27,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2022-11-25 15:43:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348825313] [2022-11-25 15:43:27,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:43:27,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 15:43:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:43:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 15:43:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-11-25 15:43:27,228 INFO L87 Difference]: Start difference. First operand 204 states and 240 transitions. Second operand has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 25 states have internal predecessors, (100), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 15:43:29,292 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] [2022-11-25 15:43:31,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:43:37,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:43:39,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:43:55,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:43:57,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:44:00,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:44:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:44:03,322 INFO L93 Difference]: Finished difference Result 331 states and 351 transitions. [2022-11-25 15:44:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-25 15:44:03,324 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 25 states have internal predecessors, (100), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 98 [2022-11-25 15:44:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:44:03,325 INFO L225 Difference]: With dead ends: 331 [2022-11-25 15:44:03,325 INFO L226 Difference]: Without dead ends: 331 [2022-11-25 15:44:03,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 168 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=1141, Invalid=5999, Unknown=0, NotChecked=0, Total=7140 [2022-11-25 15:44:03,325 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 905 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 96 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:44:03,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 492 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1096 Invalid, 6 Unknown, 0 Unchecked, 18.6s Time] [2022-11-25 15:44:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-25 15:44:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 205. [2022-11-25 15:44:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 180 states have (on average 1.1611111111111112) internal successors, (209), 186 states have internal predecessors, (209), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:44:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2022-11-25 15:44:03,331 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 98 [2022-11-25 15:44:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:44:03,332 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2022-11-25 15:44:03,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.7037037037037037) internal successors, (100), 25 states have internal predecessors, (100), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 15:44:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2022-11-25 15:44:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 15:44:03,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:44:03,333 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:03,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:44:03,548 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:44:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1651630408, now seen corresponding path program 3 times [2022-11-25 15:44:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:44:03,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723502870] [2022-11-25 15:44:03,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:44:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:44:03,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:44:03,550 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:44:03,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-25 15:44:03,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:44:03,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:44:03,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 15:44:04,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:04,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:44:04,235 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 15 treesize of output 11 [2022-11-25 15:44:04,368 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 5 [2022-11-25 15:44:04,477 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:44:04,477 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 28 treesize of output 45 [2022-11-25 15:44:04,649 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 45 treesize of output 35 [2022-11-25 15:44:04,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:44:05,046 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:44:05,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 45 [2022-11-25 15:44:05,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:05,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 51 [2022-11-25 15:44:05,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2022-11-25 15:44:06,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 32 [2022-11-25 15:44:06,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:44:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:06,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 52 [2022-11-25 15:44:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,909 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 26 treesize of output 32 [2022-11-25 15:44:06,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:06,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:44:06,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:06,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-11-25 15:44:07,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:44:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:44:07,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:10,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:44:10,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723502870] [2022-11-25 15:44:10,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723502870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:10,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [171448556] [2022-11-25 15:44:10,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:44:10,269 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:44:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:44:10,271 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:44:10,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2022-11-25 15:44:11,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 15:44:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792883469] [2022-11-25 15:44:11,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:44:11,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:11,247 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:11,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-25 15:44:11,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 1 [2022-11-25 15:44:11,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:44:11,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:44:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-25 15:44:11,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:12,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:44:13,027 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 15 treesize of output 11 [2022-11-25 15:44:13,397 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 5 [2022-11-25 15:44:13,492 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-25 15:44:13,492 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 23 treesize of output 35 [2022-11-25 15:44:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:13,912 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 35 treesize of output 30 [2022-11-25 15:44:14,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:44:14,564 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-25 15:44:14,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2022-11-25 15:44:15,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:15,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 46 [2022-11-25 15:44:15,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2022-11-25 15:44:15,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 32 [2022-11-25 15:44:15,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,973 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:44:15,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:15,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:15,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 52 [2022-11-25 15:44:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:16,085 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 26 treesize of output 32 [2022-11-25 15:44:16,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:16,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:44:16,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:44:16,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-11-25 15:44:16,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:44:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-25 15:44:16,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:19,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792883469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:19,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:44:19,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33] total 47 [2022-11-25 15:44:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945564833] [2022-11-25 15:44:19,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 15:44:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:44:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 15:44:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=4123, Unknown=0, NotChecked=0, Total=4422 [2022-11-25 15:44:19,300 INFO L87 Difference]: Start difference. First operand 205 states and 238 transitions. Second operand has 48 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 40 states have internal predecessors, (85), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:44:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:44:25,605 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2022-11-25 15:44:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 15:44:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 40 states have internal predecessors, (85), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 99 [2022-11-25 15:44:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:44:25,608 INFO L225 Difference]: With dead ends: 211 [2022-11-25 15:44:25,608 INFO L226 Difference]: Without dead ends: 211 [2022-11-25 15:44:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 171 SyntacticMatches, 6 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=593, Invalid=7597, Unknown=0, NotChecked=0, Total=8190 [2022-11-25 15:44:25,610 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 156 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:44:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 700 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1659 Invalid, 3 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:44:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-25 15:44:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-25 15:44:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 184 states have (on average 1.1521739130434783) internal successors, (212), 191 states have internal predecessors, (212), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:44:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2022-11-25 15:44:25,615 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 99 [2022-11-25 15:44:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:44:25,616 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2022-11-25 15:44:25,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 40 states have internal predecessors, (85), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:44:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2022-11-25 15:44:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:44:25,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:44:25,617 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:25,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-25 15:44:25,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-11-25 15:44:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:26,028 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:44:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -339064798, now seen corresponding path program 2 times [2022-11-25 15:44:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:44:26,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544720149] [2022-11-25 15:44:26,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:44:26,028 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 [2022-11-25 15:44:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:44:26,029 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:44:26,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-25 15:44:26,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:44:26,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:44:26,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 15:44:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:26,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:44:26,939 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:44:26,939 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 [2022-11-25 15:44:27,067 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 15 treesize of output 11 [2022-11-25 15:44:29,213 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_115| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_115| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_115|) (_ bv0 32))))) is different from true [2022-11-25 15:44:29,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:29,299 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 24 treesize of output 23 [2022-11-25 15:44:31,391 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_116| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_116| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_116|) (_ bv0 32))))) is different from true [2022-11-25 15:44:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:31,505 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 24 treesize of output 23 [2022-11-25 15:44:33,609 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_117| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_117| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_117|) (_ bv0 32))))) is different from true [2022-11-25 15:44:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:33,876 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 24 treesize of output 23 [2022-11-25 15:44:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:44:34,034 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 24 treesize of output 23 [2022-11-25 15:44:34,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-25 15:44:34,354 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 [2022-11-25 15:44:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 30 not checked. [2022-11-25 15:44:34,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:35,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-25 15:44:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 69 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-25 15:44:37,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:44:37,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544720149] [2022-11-25 15:44:37,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544720149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:37,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:44:37,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2022-11-25 15:44:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860733015] [2022-11-25 15:44:37,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:37,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-25 15:44:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:44:37,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-25 15:44:37,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1144, Unknown=3, NotChecked=210, Total=1482 [2022-11-25 15:44:37,659 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand has 39 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 15:45:01,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:45:03,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:45:05,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:45:09,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:45:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:12,608 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2022-11-25 15:45:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-25 15:45:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 100 [2022-11-25 15:45:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:12,611 INFO L225 Difference]: With dead ends: 236 [2022-11-25 15:45:12,611 INFO L226 Difference]: Without dead ends: 236 [2022-11-25 15:45:12,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 157 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=799, Invalid=5688, Unknown=5, NotChecked=480, Total=6972 [2022-11-25 15:45:12,613 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 311 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 72 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:12,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 641 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1448 Invalid, 2 Unknown, 347 Unchecked, 11.4s Time] [2022-11-25 15:45:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-25 15:45:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 215. [2022-11-25 15:45:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 188 states have (on average 1.1382978723404256) internal successors, (214), 195 states have internal predecessors, (214), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:45:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 243 transitions. [2022-11-25 15:45:12,618 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 243 transitions. Word has length 100 [2022-11-25 15:45:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:12,619 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 243 transitions. [2022-11-25 15:45:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.9473684210526314) internal successors, (112), 35 states have internal predecessors, (112), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-25 15:45:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 243 transitions. [2022-11-25 15:45:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 15:45:12,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:12,620 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:12,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:12,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:12,835 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:45:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -636193588, now seen corresponding path program 4 times [2022-11-25 15:45:12,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:45:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618622945] [2022-11-25 15:45:12,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:45:12,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:12,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:45:12,838 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:45:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-25 15:45:13,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:45:13,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:13,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 15:45:13,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:13,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:45:13,913 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 15 treesize of output 11 [2022-11-25 15:45:14,074 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 5 [2022-11-25 15:45:14,214 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:45:14,215 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 28 treesize of output 45 [2022-11-25 15:45:14,460 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 45 treesize of output 35 [2022-11-25 15:45:14,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:45:15,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:15,297 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 28 treesize of output 34 [2022-11-25 15:45:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:15,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:45:15,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:45:15,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2022-11-25 15:45:15,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:45:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 30 proven. 148 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 15:45:15,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:16,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:45:16,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618622945] [2022-11-25 15:45:16,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618622945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:16,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132175960] [2022-11-25 15:45:16,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:45:16,653 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:45:16,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:45:16,654 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:45:16,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2022-11-25 15:45:19,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:45:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:19,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 15:45:19,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:19,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:45:19,670 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 15 treesize of output 11 [2022-11-25 15:45:19,746 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 5 [2022-11-25 15:45:19,853 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:45:19,853 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 28 treesize of output 45 [2022-11-25 15:45:19,907 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 45 treesize of output 35 [2022-11-25 15:45:20,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:45:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:20,424 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 28 treesize of output 34 [2022-11-25 15:45:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:20,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:45:20,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:45:20,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2022-11-25 15:45:20,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:45:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 30 proven. 148 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 15:45:20,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:20,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [132175960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:20,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:45:20,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2022-11-25 15:45:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793351377] [2022-11-25 15:45:20,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 15:45:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:45:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 15:45:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 15:45:20,856 INFO L87 Difference]: Start difference. First operand 215 states and 243 transitions. Second operand has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 25 states have internal predecessors, (67), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:45:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:25,194 INFO L93 Difference]: Finished difference Result 230 states and 258 transitions. [2022-11-25 15:45:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 15:45:25,195 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 25 states have internal predecessors, (67), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 102 [2022-11-25 15:45:25,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:25,196 INFO L225 Difference]: With dead ends: 230 [2022-11-25 15:45:25,196 INFO L226 Difference]: Without dead ends: 230 [2022-11-25 15:45:25,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 198 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=223, Invalid=2639, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 15:45:25,197 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 88 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:25,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 695 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1226 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 15:45:25,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-25 15:45:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-25 15:45:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 203 states have (on average 1.1280788177339902) internal successors, (229), 209 states have internal predecessors, (229), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:45:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 258 transitions. [2022-11-25 15:45:25,204 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 258 transitions. Word has length 102 [2022-11-25 15:45:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:25,205 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 258 transitions. [2022-11-25 15:45:25,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 25 states have internal predecessors, (67), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:45:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 258 transitions. [2022-11-25 15:45:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 15:45:25,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:25,206 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:25,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:25,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-11-25 15:45:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:25,620 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:45:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash 683730192, now seen corresponding path program 4 times [2022-11-25 15:45:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:45:25,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659981222] [2022-11-25 15:45:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:45:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:45:25,622 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:45:25,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-25 15:45:26,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:45:26,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:26,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:45:26,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-25 15:45:26,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-25 15:45:26,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:45:26,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659981222] [2022-11-25 15:45:26,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659981222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:26,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:45:26,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-25 15:45:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180439438] [2022-11-25 15:45:26,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:26,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:45:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:45:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:45:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:45:26,920 INFO L87 Difference]: Start difference. First operand 230 states and 258 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:45:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:27,701 INFO L93 Difference]: Finished difference Result 228 states and 246 transitions. [2022-11-25 15:45:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:45:27,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 103 [2022-11-25 15:45:27,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:27,704 INFO L225 Difference]: With dead ends: 228 [2022-11-25 15:45:27,704 INFO L226 Difference]: Without dead ends: 228 [2022-11-25 15:45:27,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:45:27,704 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 55 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:27,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 611 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 15:45:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-25 15:45:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 213. [2022-11-25 15:45:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 186 states have (on average 1.096774193548387) internal successors, (204), 192 states have internal predecessors, (204), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:45:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 233 transitions. [2022-11-25 15:45:27,711 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 233 transitions. Word has length 103 [2022-11-25 15:45:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 233 transitions. [2022-11-25 15:45:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 15:45:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 233 transitions. [2022-11-25 15:45:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 15:45:27,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:27,713 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:27,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:27,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:27,923 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:45:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1238091216, now seen corresponding path program 6 times [2022-11-25 15:45:27,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:45:27,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857376701] [2022-11-25 15:45:27,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 15:45:27,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:27,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:45:27,927 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:45:27,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-25 15:45:28,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-25 15:45:28,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-25 15:45:29,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:29,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:45:29,639 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5079 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5079) |c_#length|)))) is different from true [2022-11-25 15:45:29,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:29,665 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 [2022-11-25 15:45:29,682 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:29,682 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 [2022-11-25 15:45:29,901 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5080 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5080) |c_#length|)))) is different from true [2022-11-25 15:45:29,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:29,926 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 [2022-11-25 15:45:29,947 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:29,947 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 [2022-11-25 15:45:30,166 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5081 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5081))))) is different from true [2022-11-25 15:45:30,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:30,191 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 [2022-11-25 15:45:30,208 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:30,208 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 [2022-11-25 15:45:30,442 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5082 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5082))))) is different from true [2022-11-25 15:45:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:30,461 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 [2022-11-25 15:45:30,476 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:30,476 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 [2022-11-25 15:45:30,702 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5083 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5083) |c_#length|)))) is different from true [2022-11-25 15:45:30,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:30,719 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 [2022-11-25 15:45:30,736 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:30,736 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 [2022-11-25 15:45:30,949 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5084 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5084))))) is different from true [2022-11-25 15:45:30,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:30,971 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 [2022-11-25 15:45:30,987 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:30,988 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 [2022-11-25 15:45:31,178 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5085 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5085))))) is different from true [2022-11-25 15:45:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:31,197 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 [2022-11-25 15:45:31,214 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:31,214 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 [2022-11-25 15:45:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 86 proven. 127 refuted. 0 times theorem prover too weak. 108 trivial. 56 not checked. [2022-11-25 15:45:31,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:31,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:45:31,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857376701] [2022-11-25 15:45:31,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857376701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:31,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690985153] [2022-11-25 15:45:31,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 15:45:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:45:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:45:31,982 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:45:31,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2022-11-25 15:45:33,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-25 15:45:33,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:33,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-25 15:45:33,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:33,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:45:33,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:45:34,596 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5203 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5203))))) is different from true [2022-11-25 15:45:34,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:34,618 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 [2022-11-25 15:45:34,632 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:34,632 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 [2022-11-25 15:45:34,735 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5204 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5204))))) is different from true [2022-11-25 15:45:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:34,757 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 [2022-11-25 15:45:34,770 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:34,771 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 [2022-11-25 15:45:35,000 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2022-11-25 15:45:35,035 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:45:35,035 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 12 treesize of output 18 [2022-11-25 15:45:35,578 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-25 15:45:35,578 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 3 case distinctions, treesize of input 24 treesize of output 43 [2022-11-25 15:45:36,456 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:36,457 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 [2022-11-25 15:45:36,496 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-25 15:45:36,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2022-11-25 15:45:37,014 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:37,015 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 [2022-11-25 15:45:37,024 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 [2022-11-25 15:45:37,381 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5212 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5212) |c_#length|)))) is different from true [2022-11-25 15:45:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:37,404 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 [2022-11-25 15:45:37,422 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:45:37,422 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 [2022-11-25 15:45:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 15 proven. 149 refuted. 0 times theorem prover too weak. 169 trivial. 44 not checked. [2022-11-25 15:45:37,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:37,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690985153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:37,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:45:37,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 34] total 49 [2022-11-25 15:45:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663441412] [2022-11-25 15:45:37,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-25 15:45:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:45:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-25 15:45:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1531, Unknown=11, NotChecked=968, Total=2652 [2022-11-25 15:45:37,893 INFO L87 Difference]: Start difference. First operand 213 states and 233 transitions. Second operand has 50 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 44 states have internal predecessors, (101), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (16), 13 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-25 15:45:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:47,013 INFO L93 Difference]: Finished difference Result 335 states and 363 transitions. [2022-11-25 15:45:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 15:45:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 44 states have internal predecessors, (101), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (16), 13 states have call predecessors, (16), 11 states have call successors, (16) Word has length 110 [2022-11-25 15:45:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:47,014 INFO L225 Difference]: With dead ends: 335 [2022-11-25 15:45:47,014 INFO L226 Difference]: Without dead ends: 335 [2022-11-25 15:45:47,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=400, Invalid=4889, Unknown=11, NotChecked=1672, Total=6972 [2022-11-25 15:45:47,015 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 311 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 35 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 4701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 1892 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:47,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2111 Invalid, 4701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2749 Invalid, 25 Unknown, 1892 Unchecked, 5.3s Time] [2022-11-25 15:45:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-25 15:45:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 213. [2022-11-25 15:45:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 192 states have internal predecessors, (203), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:45:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 232 transitions. [2022-11-25 15:45:47,021 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 232 transitions. Word has length 110 [2022-11-25 15:45:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 232 transitions. [2022-11-25 15:45:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 44 states have internal predecessors, (101), 11 states have call successors, (11), 3 states have call predecessors, (11), 15 states have return successors, (16), 13 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-25 15:45:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 232 transitions. [2022-11-25 15:45:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 15:45:47,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:47,023 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:47,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:47,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (67)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:47,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:45:47,439 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:45:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1918735380, now seen corresponding path program 5 times [2022-11-25 15:45:47,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:45:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865998161] [2022-11-25 15:45:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:45:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:45:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:45:47,442 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:45:47,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-25 15:45:48,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-25 15:45:48,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-25 15:45:48,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:48,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 15:45:48,891 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 15 treesize of output 11 [2022-11-25 15:45:49,053 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 5 [2022-11-25 15:45:49,240 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-25 15:45:49,241 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 28 treesize of output 45 [2022-11-25 15:45:49,531 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 45 treesize of output 35 [2022-11-25 15:45:49,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-25 15:45:50,073 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-25 15:45:50,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2022-11-25 15:45:50,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:50,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:50,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:45:50,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2022-11-25 15:45:50,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2022-11-25 15:45:51,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:51,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2022-11-25 15:45:51,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:51,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:51,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:45:51,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:45:51,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 54 [2022-11-25 15:45:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:52,182 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 28 treesize of output 34 [2022-11-25 15:45:52,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:45:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:45:52,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:45:52,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2022-11-25 15:45:52,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:45:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 34 proven. 164 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 15:45:52,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:56,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:45:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865998161] [2022-11-25 15:45:56,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865998161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1566773347] [2022-11-25 15:45:56,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:45:56,035 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:45:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:45:56,036 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:45:56,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2022-11-25 15:46:00,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-25 15:46:00,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:46:01,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-25 15:46:01,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:46:01,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 15:46:05,811 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_5448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_5448))) (exists ((v_ArrVal_5449 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_5449))))) is different from true [2022-11-25 15:46:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:05,846 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 [2022-11-25 15:46:05,895 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:46:05,895 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 [2022-11-25 15:46:06,642 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:46:06,642 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 [2022-11-25 15:46:06,700 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:46:06,700 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 [2022-11-25 15:46:07,394 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 15 treesize of output 11 [2022-11-25 15:46:08,272 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 7 treesize of output 5 [2022-11-25 15:46:08,278 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:46:17,006 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-25 15:46:17,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-25 15:46:17,041 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 16 [2022-11-25 15:46:18,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:18,123 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 49 treesize of output 36 [2022-11-25 15:46:19,269 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 7 treesize of output 5 [2022-11-25 15:46:19,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 11 [2022-11-25 15:46:20,255 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-25 15:46:20,255 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 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-25 15:46:20,300 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 16 [2022-11-25 15:46:21,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:21,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:21,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 56 [2022-11-25 15:46:23,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 15:46:23,157 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 7 treesize of output 5 [2022-11-25 15:46:26,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:26,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 46 [2022-11-25 15:46:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:27,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:27,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:46:27,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 91 treesize of output 57 [2022-11-25 15:46:29,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:46:29,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 46 [2022-11-25 15:46:29,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 15:46:29,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 40 [2022-11-25 15:46:30,676 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 18 treesize of output 12 [2022-11-25 15:46:30,681 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 27 treesize of output 15 [2022-11-25 15:46:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 25 proven. 237 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-25 15:46:31,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:46:40,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1566773347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:46:40,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:46:40,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 50] total 84 [2022-11-25 15:46:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364141253] [2022-11-25 15:46:40,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:46:40,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-25 15:46:40,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:46:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-25 15:46:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=10229, Unknown=5, NotChecked=204, Total=10920 [2022-11-25 15:46:40,014 INFO L87 Difference]: Start difference. First operand 213 states and 232 transitions. Second operand has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 77 states have internal predecessors, (171), 11 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-25 15:46:42,315 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] [2022-11-25 15:46:44,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:46:48,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:46:52,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:02,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:05,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:07,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:36,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:43,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:47:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:47:50,201 INFO L93 Difference]: Finished difference Result 224 states and 243 transitions. [2022-11-25 15:47:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-25 15:47:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 77 states have internal predecessors, (171), 11 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) Word has length 109 [2022-11-25 15:47:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:47:50,208 INFO L225 Difference]: With dead ends: 224 [2022-11-25 15:47:50,208 INFO L226 Difference]: Without dead ends: 224 [2022-11-25 15:47:50,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6990 ImplicationChecksByTransitivity, 68.4s TimeCoverageRelationStatistics Valid=1037, Invalid=19548, Unknown=11, NotChecked=284, Total=20880 [2022-11-25 15:47:50,212 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 231 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 6027 mSolverCounterSat, 56 mSolverCounterUnsat, 80 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 6308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 6027 IncrementalHoareTripleChecker+Invalid, 80 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:47:50,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1683 Invalid, 6308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 6027 Invalid, 80 Unknown, 145 Unchecked, 39.9s Time] [2022-11-25 15:47:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-25 15:47:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2022-11-25 15:47:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 193 states have (on average 1.0880829015544042) internal successors, (210), 199 states have internal predecessors, (210), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-25 15:47:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 239 transitions. [2022-11-25 15:47:50,219 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 239 transitions. Word has length 109 [2022-11-25 15:47:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:47:50,220 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 239 transitions. [2022-11-25 15:47:50,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 2.0357142857142856) internal successors, (171), 77 states have internal predecessors, (171), 11 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-25 15:47:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 239 transitions. [2022-11-25 15:47:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 15:47:50,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:47:50,222 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:50,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:50,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:47:50,637 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-25 15:47:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1206104089, now seen corresponding path program 3 times [2022-11-25 15:47:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:47:50,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078822758] [2022-11-25 15:47:50,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:47:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 15:47:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:47:50,640 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 15:47:50,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a97516-49cb-4289-87bc-efae800c4072/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-25 15:47:51,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 15:47:51,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:47:51,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-25 15:47:51,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:52,277 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 15 treesize of output 11 [2022-11-25 15:47:52,290 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 15 treesize of output 11 [2022-11-25 15:47:52,875 INFO L321 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-11-25 15:47:52,875 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 51 treesize of output 43 [2022-11-25 15:47:58,822 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 101 treesize of output 73 [2022-11-25 15:47:58,891 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 43 treesize of output 42 [2022-11-25 15:48:00,007 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-11-25 15:48:00,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 347 treesize of output 322