./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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 17:30:37,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:30:37,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:30:37,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:30:37,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:30:37,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:30:37,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:30:37,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:30:37,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:30:37,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:30:37,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:30:37,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:30:37,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:30:37,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:30:37,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:30:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:30:37,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:30:37,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:30:37,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:30:37,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:30:37,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:30:37,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:30:37,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:30:37,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:30:37,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:30:37,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:30:37,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:30:37,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:30:37,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:30:37,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:30:37,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:30:37,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:30:37,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:30:37,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:30:37,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:30:37,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:30:37,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:30:37,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:30:37,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:30:37,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:30:37,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:30:37,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:30:37,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:30:37,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:30:37,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:30:37,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:30:37,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:30:37,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:30:37,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:30:37,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:30:37,244 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:30:37,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:30:37,245 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:30:37,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:30:37,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:30:37,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:30:37,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:30:37,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:30:37,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:30:37,247 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:30:37,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:30:37,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:30:37,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:30:37,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:30:37,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:30:37,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:30:37,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:30:37,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:37,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:30:37,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:30:37,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:30:37,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:30:37,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:30:37,251 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:30:37,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:30:37,252 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_43df8c63-166d-4755-9504-bbb2998aa54d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-25 17:30:37,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:30:37,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:30:37,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:30:37,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:30:37,623 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:30:37,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 17:30:40,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:30:40,909 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:30:40,909 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 17:30:40,923 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/0258f247c/1894cecc84d14350a7e7e690463e40fd/FLAG41f82d7ec [2022-11-25 17:30:40,939 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/0258f247c/1894cecc84d14350a7e7e690463e40fd [2022-11-25 17:30:40,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:30:40,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:30:40,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:40,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:30:40,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:30:40,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:40" (1/1) ... [2022-11-25 17:30:40,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356ef35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:40, skipping insertion in model container [2022-11-25 17:30:40,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:40" (1/1) ... [2022-11-25 17:30:40,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:30:41,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:41,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:41,455 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 17:30:41,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74f40bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:41, skipping insertion in model container [2022-11-25 17:30:41,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:41,457 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:30:41,461 INFO L158 Benchmark]: Toolchain (without parser) took 516.73ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 72.7MB in the beginning and 136.1MB in the end (delta: -63.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-25 17:30:41,462 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 107.0MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:30:41,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.27ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 72.5MB in the beginning and 136.1MB in the end (delta: -63.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-11-25 17:30:41,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 107.0MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.27ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 72.5MB in the beginning and 136.1MB in the end (delta: -63.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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 17:30:43,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:30:43,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:30:43,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:30:43,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:30:43,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:30:43,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:30:43,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:30:43,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:30:43,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:30:43,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:30:43,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:30:43,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:30:43,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:30:43,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:30:43,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:30:43,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:30:43,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:30:43,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:30:43,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:30:43,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:30:43,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:30:43,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:30:43,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:30:43,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:30:43,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:30:43,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:30:43,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:30:43,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:30:43,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:30:43,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:30:43,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:30:43,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:30:43,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:30:43,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:30:43,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:30:43,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:30:43,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:30:43,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:30:43,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:30:43,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:30:43,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:30:43,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:30:43,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:30:43,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:30:43,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:30:43,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:30:43,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:30:43,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:30:43,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:30:43,778 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:30:43,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:30:43,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:30:43,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:30:43,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:30:43,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:30:43,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:30:43,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:30:43,780 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:30:43,780 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:30:43,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:30:43,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:30:43,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:30:43,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:30:43,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:30:43,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:30:43,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:30:43,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:30:43,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:30:43,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:43,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:30:43,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:30:43,783 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:30:43,783 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:30:43,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:30:43,784 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:30:43,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:30:43,784 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:30:43,784 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_43df8c63-166d-4755-9504-bbb2998aa54d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-25 17:30:44,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:30:44,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:30:44,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:30:44,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:30:44,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:30:44,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 17:30:47,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:30:47,670 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:30:47,671 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 17:30:47,692 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/5f0591136/ab3dca6a26594caa9b79de7f7933a600/FLAGe5684620e [2022-11-25 17:30:47,720 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/data/5f0591136/ab3dca6a26594caa9b79de7f7933a600 [2022-11-25 17:30:47,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:30:47,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:30:47,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:47,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:30:47,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:30:47,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:47,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c23e297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:47, skipping insertion in model container [2022-11-25 17:30:47,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:30:47" (1/1) ... [2022-11-25 17:30:47,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:30:47,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:48,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:48,199 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:30:48,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:30:48,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:48,249 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:30:48,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:30:48,323 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:30:48,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48 WrapperNode [2022-11-25 17:30:48,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:30:48,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:48,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:30:48,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:30:48,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,383 INFO L138 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-25 17:30:48,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:30:48,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:30:48,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:30:48,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:30:48,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:30:48,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:30:48,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:30:48,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:30:48,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (1/1) ... [2022-11-25 17:30:48,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:30:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:48,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:30:48,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:30:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:30:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:30:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2022-11-25 17:30:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2022-11-25 17:30:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:30:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:30:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:30:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:30:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:30:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:30:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:30:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:30:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:30:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:30:48,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:30:48,721 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:30:49,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:30:49,810 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:30:49,813 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 17:30:49,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:49 BoogieIcfgContainer [2022-11-25 17:30:49,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:30:49,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:30:49,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:30:49,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:30:49,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:30:47" (1/3) ... [2022-11-25 17:30:49,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e28e483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:49, skipping insertion in model container [2022-11-25 17:30:49,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:30:48" (2/3) ... [2022-11-25 17:30:49,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e28e483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:30:49, skipping insertion in model container [2022-11-25 17:30:49,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:30:49" (3/3) ... [2022-11-25 17:30:49,828 INFO L112 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2022-11-25 17:30:49,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:30:49,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-25 17:30:49,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:30:49,965 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;@2cbec1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:30:49,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-25 17:30:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 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 17:30:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 17:30:49,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:49,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 17:30:49,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2022-11-25 17:30:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:50,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708450671] [2022-11-25 17:30:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:50,004 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 17:30:50,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:50,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:50,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:30:50,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:50,134 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 17:30:50,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:50,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:50,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708450671] [2022-11-25 17:30:50,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708450671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:50,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:50,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:30:50,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917084770] [2022-11-25 17:30:50,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:30:50,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:30:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:30:50,189 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:50,238 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2022-11-25 17:30:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:30:50,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 17:30:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:50,258 INFO L225 Difference]: With dead ends: 189 [2022-11-25 17:30:50,258 INFO L226 Difference]: Without dead ends: 187 [2022-11-25 17:30:50,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:30:50,264 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:50,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:30:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-25 17:30:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-25 17:30:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 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 17:30:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2022-11-25 17:30:50,329 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2022-11-25 17:30:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:50,330 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2022-11-25 17:30:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2022-11-25 17:30:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 17:30:50,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:50,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 17:30:50,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2022-11-25 17:30:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:50,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730555432] [2022-11-25 17:30:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:50,550 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 17:30:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:50,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:50,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:30:50,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:50,690 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 17:30:50,758 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:30:50,759 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 17:30:50,786 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 17:30:50,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:50,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:50,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730555432] [2022-11-25 17:30:50,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730555432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:50,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:50,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:30:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839317471] [2022-11-25 17:30:50,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:30:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:30:50,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:30:50,802 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:51,470 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2022-11-25 17:30:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:30:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 17:30:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:51,472 INFO L225 Difference]: With dead ends: 207 [2022-11-25 17:30:51,472 INFO L226 Difference]: Without dead ends: 207 [2022-11-25 17:30:51,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:30:51,474 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:51,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:30:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-25 17:30:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2022-11-25 17:30:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 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 17:30:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2022-11-25 17:30:51,485 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2022-11-25 17:30:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2022-11-25 17:30:51,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2022-11-25 17:30:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 17:30:51,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:51,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 17:30:51,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:51,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:51,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:51,698 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2022-11-25 17:30:51,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:51,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394041949] [2022-11-25 17:30:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:51,699 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 17:30:51,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:51,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:51,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:51,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:30:51,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:51,807 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 5 [2022-11-25 17:30:51,816 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 17:30:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:30:51,879 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 17:30:51,892 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:30:51,893 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 17:30:51,917 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 17:30:51,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:51,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394041949] [2022-11-25 17:30:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394041949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:51,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:30:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908228051] [2022-11-25 17:30:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:30:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:30:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:30:51,924 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:52,879 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2022-11-25 17:30:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:30:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 17:30:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:52,885 INFO L225 Difference]: With dead ends: 197 [2022-11-25 17:30:52,885 INFO L226 Difference]: Without dead ends: 197 [2022-11-25 17:30:52,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:30:52,887 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:52,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 344 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:30:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-25 17:30:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 186. [2022-11-25 17:30:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 182 states have internal predecessors, (195), 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 17:30:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2022-11-25 17:30:52,904 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 4 [2022-11-25 17:30:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:52,905 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2022-11-25 17:30:52,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2022-11-25 17:30:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 17:30:52,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:52,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:30:52,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:30:53,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2022-11-25 17:30:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167266893] [2022-11-25 17:30:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:53,108 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 17:30:53,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:53,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:53,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:30:53,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:53,229 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 17:30:53,240 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 17:30:53,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:53,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167266893] [2022-11-25 17:30:53,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167266893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:53,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:53,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:30:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822207312] [2022-11-25 17:30:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:30:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:30:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:53,243 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:53,622 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2022-11-25 17:30:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:30:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 17:30:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:53,624 INFO L225 Difference]: With dead ends: 209 [2022-11-25 17:30:53,624 INFO L226 Difference]: Without dead ends: 209 [2022-11-25 17:30:53,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:53,625 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:53,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:30:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-25 17:30:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2022-11-25 17:30:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 180 states have internal predecessors, (192), 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 17:30:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2022-11-25 17:30:53,633 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 5 [2022-11-25 17:30:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:53,634 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2022-11-25 17:30:53,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2022-11-25 17:30:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 17:30:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:53,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:30:53,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Ended with exit code 0 [2022-11-25 17:30:53,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2022-11-25 17:30:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:53,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430224337] [2022-11-25 17:30:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:53,847 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 17:30:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:53,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:30:53,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:53,933 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 17:30:53,950 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 17:30:53,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:53,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430224337] [2022-11-25 17:30:53,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430224337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:53,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:53,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:30:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094416631] [2022-11-25 17:30:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:30:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:30:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:53,953 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:54,407 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2022-11-25 17:30:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:30:54,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 17:30:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:54,409 INFO L225 Difference]: With dead ends: 182 [2022-11-25 17:30:54,409 INFO L226 Difference]: Without dead ends: 182 [2022-11-25 17:30:54,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:54,410 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:54,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 273 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:30:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-25 17:30:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-25 17:30:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 178 states have internal predecessors, (189), 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 17:30:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2022-11-25 17:30:54,417 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 5 [2022-11-25 17:30:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:54,418 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2022-11-25 17:30:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2022-11-25 17:30:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 17:30:54,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:54,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:54,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:54,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2022-11-25 17:30:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:54,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664300036] [2022-11-25 17:30:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:54,635 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 17:30:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:54,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:54,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:54,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:30:54,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:54,776 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 17:30:54,834 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:30:54,834 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 17:30:54,944 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 14 treesize of output 16 [2022-11-25 17:30:54,956 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 14 treesize of output 16 [2022-11-25 17:30:55,022 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 17:30:55,031 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 17:30:55,053 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 17:30:55,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:55,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:55,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664300036] [2022-11-25 17:30:55,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664300036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:55,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:55,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:30:55,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274290077] [2022-11-25 17:30:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:55,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:30:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:30:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:30:55,057 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:55,733 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2022-11-25 17:30:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:30:55,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 17:30:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:55,735 INFO L225 Difference]: With dead ends: 184 [2022-11-25 17:30:55,735 INFO L226 Difference]: Without dead ends: 184 [2022-11-25 17:30:55,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:30:55,736 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 6 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:55,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 606 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:30:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-25 17:30:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-11-25 17:30:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 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 17:30:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2022-11-25 17:30:55,744 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 10 [2022-11-25 17:30:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:55,744 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2022-11-25 17:30:55,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2022-11-25 17:30:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:30:55,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:55,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:55,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:55,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2022-11-25 17:30:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556503870] [2022-11-25 17:30:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:55,951 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 17:30:55,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:55,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:55,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:56,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:30:56,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:56,064 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 17:30:56,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:56,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:56,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556503870] [2022-11-25 17:30:56,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556503870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:56,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:56,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:30:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678655032] [2022-11-25 17:30:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:30:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:30:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:30:56,067 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:56,110 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2022-11-25 17:30:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:30:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 17:30:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:56,112 INFO L225 Difference]: With dead ends: 260 [2022-11-25 17:30:56,112 INFO L226 Difference]: Without dead ends: 260 [2022-11-25 17:30:56,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 17:30:56,113 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 81 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:56,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 548 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:30:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-25 17:30:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2022-11-25 17:30:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.963768115942029) internal successors, (271), 219 states have internal predecessors, (271), 2 states have call successors, (2), 2 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 17:30:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2022-11-25 17:30:56,121 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 12 [2022-11-25 17:30:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:56,121 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2022-11-25 17:30:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2022-11-25 17:30:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:30:56,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:56,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:56,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:56,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:56,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:56,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2022-11-25 17:30:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:56,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264539990] [2022-11-25 17:30:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:56,335 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 17:30:56,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:56,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:56,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:56,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:30:56,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:56,448 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:30:56,448 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:30:56,469 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 17:30:56,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:56,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:56,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264539990] [2022-11-25 17:30:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264539990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:56,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:56,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:30:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227892833] [2022-11-25 17:30:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:30:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:30:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:56,472 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:56,876 INFO L93 Difference]: Finished difference Result 227 states and 271 transitions. [2022-11-25 17:30:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:30:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 17:30:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:56,878 INFO L225 Difference]: With dead ends: 227 [2022-11-25 17:30:56,878 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 17:30:56,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:56,879 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 202 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:30:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 17:30:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 218. [2022-11-25 17:30:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 144 states have (on average 1.8125) internal successors, (261), 213 states have internal predecessors, (261), 2 states have call successors, (2), 2 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 17:30:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 265 transitions. [2022-11-25 17:30:56,886 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 265 transitions. Word has length 13 [2022-11-25 17:30:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 265 transitions. [2022-11-25 17:30:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 265 transitions. [2022-11-25 17:30:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:30:56,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:56,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:56,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:57,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2022-11-25 17:30:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:57,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583793391] [2022-11-25 17:30:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:57,101 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 17:30:57,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:57,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:57,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:30:57,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:57,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:30:57,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 17:30:57,211 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 10 treesize of output 8 [2022-11-25 17:30:57,221 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 17:30:57,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:57,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:57,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583793391] [2022-11-25 17:30:57,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583793391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:57,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:57,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:30:57,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243928346] [2022-11-25 17:30:57,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:30:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:30:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:57,223 INFO L87 Difference]: Start difference. First operand 218 states and 265 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:57,735 INFO L93 Difference]: Finished difference Result 239 states and 279 transitions. [2022-11-25 17:30:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:30:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 17:30:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:57,738 INFO L225 Difference]: With dead ends: 239 [2022-11-25 17:30:57,739 INFO L226 Difference]: Without dead ends: 239 [2022-11-25 17:30:57,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:30:57,740 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:57,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:30:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-25 17:30:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2022-11-25 17:30:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 154 states have (on average 1.655844155844156) internal successors, (255), 214 states have internal predecessors, (255), 2 states have call successors, (2), 2 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 17:30:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2022-11-25 17:30:57,747 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 13 [2022-11-25 17:30:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:57,747 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2022-11-25 17:30:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2022-11-25 17:30:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 17:30:57,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:57,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:57,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2022-11-25 17:30:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:57,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942489811] [2022-11-25 17:30:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:57,959 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 17:30:57,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:57,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:58,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:30:58,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:58,102 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:30:58,102 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-25 17:30:58,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:30:58,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-25 17:30:58,158 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 17:30:58,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:58,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:58,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942489811] [2022-11-25 17:30:58,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942489811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:58,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:58,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:30:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172081582] [2022-11-25 17:30:58,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:58,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:30:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:30:58,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:30:58,161 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:58,943 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2022-11-25 17:30:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:30:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 17:30:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:58,946 INFO L225 Difference]: With dead ends: 270 [2022-11-25 17:30:58,946 INFO L226 Difference]: Without dead ends: 270 [2022-11-25 17:30:58,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:30:58,947 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 26 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:30:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-25 17:30:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 225. [2022-11-25 17:30:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.65625) internal successors, (265), 220 states have internal predecessors, (265), 2 states have call successors, (2), 2 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 17:30:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2022-11-25 17:30:58,955 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 17 [2022-11-25 17:30:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:58,956 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2022-11-25 17:30:58,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:30:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2022-11-25 17:30:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 17:30:58,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:58,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:58,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:59,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:30:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2022-11-25 17:30:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608158652] [2022-11-25 17:30:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:30:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:59,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:59,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:30:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:59,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:30:59,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:59,313 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:30:59,314 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:30:59,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:30:59,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:30:59,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-25 17:30:59,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:30:59,479 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 17:30:59,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:59,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608158652] [2022-11-25 17:30:59,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608158652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:59,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:30:59,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:30:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327530660] [2022-11-25 17:30:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:30:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:30:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:30:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:30:59,481 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:00,354 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2022-11-25 17:31:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:31:00,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 17:31:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:00,356 INFO L225 Difference]: With dead ends: 227 [2022-11-25 17:31:00,356 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 17:31:00,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:31:00,357 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 4 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:00,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 424 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 17:31:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 17:31:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-11-25 17:31:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.63125) internal successors, (261), 220 states have internal predecessors, (261), 2 states have call successors, (2), 2 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 17:31:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2022-11-25 17:31:00,364 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 17 [2022-11-25 17:31:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2022-11-25 17:31:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2022-11-25 17:31:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 17:31:00,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:00,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:00,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Ended with exit code 0 [2022-11-25 17:31:00,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:00,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2022-11-25 17:31:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:00,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535559463] [2022-11-25 17:31:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:00,578 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 17:31:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:00,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:00,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:00,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:31:00,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:00,760 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:31:00,760 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 19 treesize of output 22 [2022-11-25 17:31:00,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:00,921 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:31:00,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:31:00,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:31:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:31:01,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:01,073 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_178) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (_ bv1 1)))) is different from false [2022-11-25 17:31:01,086 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:31:01,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:01,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-25 17:31:01,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-11-25 17:31:01,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:31:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 17:31:01,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535559463] [2022-11-25 17:31:01,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535559463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:31:01,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:31:01,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-25 17:31:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962417686] [2022-11-25 17:31:01,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:31:01,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:31:01,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:31:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=52, Unknown=2, NotChecked=30, Total=110 [2022-11-25 17:31:01,182 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:02,213 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2022-11-25 17:31:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:31:02,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 17:31:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:02,215 INFO L225 Difference]: With dead ends: 232 [2022-11-25 17:31:02,215 INFO L226 Difference]: Without dead ends: 232 [2022-11-25 17:31:02,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=64, Unknown=2, NotChecked=34, Total=132 [2022-11-25 17:31:02,216 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 47 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:02,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 609 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 327 Invalid, 0 Unknown, 210 Unchecked, 0.9s Time] [2022-11-25 17:31:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-25 17:31:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2022-11-25 17:31:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.61875) internal successors, (259), 219 states have internal predecessors, (259), 2 states have call successors, (2), 2 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 17:31:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2022-11-25 17:31:02,223 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 22 [2022-11-25 17:31:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:02,223 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2022-11-25 17:31:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2022-11-25 17:31:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 17:31:02,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:02,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:02,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:02,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2022-11-25 17:31:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889058813] [2022-11-25 17:31:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:02,426 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 17:31:02,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:02,427 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:02,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (14)] Waiting until timeout for monitored process [2022-11-25 17:31:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:02,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:31:02,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:02,647 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 10 treesize of output 8 [2022-11-25 17:31:02,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 17:31:02,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:02,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:02,865 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:31:02,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 17:31:02,876 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 22 treesize of output 24 [2022-11-25 17:31:02,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-25 17:31:02,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:31:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:03,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:03,414 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_224) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 17:31:03,475 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-25 17:31:03,544 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-11-25 17:31:03,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:03,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-25 17:31:03,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:03,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-25 17:31:03,598 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 62 treesize of output 50 [2022-11-25 17:31:03,604 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 96 treesize of output 78 [2022-11-25 17:31:03,615 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 40 treesize of output 32 [2022-11-25 17:31:03,620 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 66 treesize of output 58 [2022-11-25 17:31:03,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:03,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-25 17:31:03,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2022-11-25 17:31:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 17:31:03,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889058813] [2022-11-25 17:31:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889058813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:31:03,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:31:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-25 17:31:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003287855] [2022-11-25 17:31:03,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:31:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:31:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:31:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2022-11-25 17:31:03,929 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:07,746 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2022-11-25 17:31:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:31:07,747 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 17:31:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:07,749 INFO L225 Difference]: With dead ends: 236 [2022-11-25 17:31:07,749 INFO L226 Difference]: Without dead ends: 236 [2022-11-25 17:31:07,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=68, Invalid=181, Unknown=3, NotChecked=90, Total=342 [2022-11-25 17:31:07,750 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 6 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 917 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 502 Invalid, 11 Unknown, 262 Unchecked, 3.1s Time] [2022-11-25 17:31:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-25 17:31:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2022-11-25 17:31:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 229 states have internal predecessors, (269), 2 states have call successors, (2), 2 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 17:31:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2022-11-25 17:31:07,757 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 22 [2022-11-25 17:31:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:07,757 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2022-11-25 17:31:07,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2022-11-25 17:31:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 17:31:07,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:07,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:31:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:07,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 767728924, now seen corresponding path program 2 times [2022-11-25 17:31:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58404870] [2022-11-25 17:31:07,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:31:07,973 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 17:31:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:07,975 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:07,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:08,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:31:08,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:31:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:31:08,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:08,272 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:31:08,273 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:31:08,281 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 10 treesize of output 8 [2022-11-25 17:31:08,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:08,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:08,495 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:31:08,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 17:31:08,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 17:31:08,692 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:31:08,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 17:31:08,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 17:31:08,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-25 17:31:08,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:31:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:31:08,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:09,255 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 17:31:09,310 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 17:31:09,386 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 17:31:09,482 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))))) is different from false [2022-11-25 17:31:09,936 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2))))))))) is different from false [2022-11-25 17:31:09,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:09,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-25 17:31:09,975 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:09,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-25 17:31:09,983 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 754 treesize of output 640 [2022-11-25 17:31:09,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1360 treesize of output 1258 [2022-11-25 17:31:10,021 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 1254 treesize of output 1158 [2022-11-25 17:31:10,034 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 1158 treesize of output 958 [2022-11-25 17:31:10,046 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 958 treesize of output 862 [2022-11-25 17:31:10,058 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 862 treesize of output 830 [2022-11-25 17:31:26,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:26,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-25 17:31:26,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:26,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-25 17:31:26,085 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 102 treesize of output 84 [2022-11-25 17:31:26,095 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 174 treesize of output 144 [2022-11-25 17:31:26,113 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 102 treesize of output 86 [2022-11-25 17:31:26,120 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 124 treesize of output 100 [2022-11-25 17:31:26,139 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 70 treesize of output 62 [2022-11-25 17:31:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-25 17:31:26,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:26,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58404870] [2022-11-25 17:31:26,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58404870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:31:26,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:31:26,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2022-11-25 17:31:26,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920235119] [2022-11-25 17:31:26,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:31:26,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:31:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:26,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:31:26,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=160, Unknown=9, NotChecked=150, Total=380 [2022-11-25 17:31:26,833 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:30,581 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| c_create_data_~data~0.base) .cse3)) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (let ((.cse5 (bvadd (_ bv8 32) .cse4 .cse1)) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (bvule (bvadd (_ bv4 32) .cse4 .cse1) .cse5) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3)))) (bvule .cse5 (select |c_#length| .cse2)))))) is different from false [2022-11-25 17:31:30,603 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse5 (select (select |c_#memory_$Pointer$.offset| c_create_data_~data~0.base) .cse4)) (.cse3 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4)) (.cse0 (bvadd (_ bv4 32) .cse5 .cse3))) (and (bvule .cse0 (select |c_#length| .cse1)) (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_286) c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv4 32) .cse2 .cse3) (bvadd (_ bv8 32) .cse2 .cse3)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_286) c_create_data_~data~0.base) .cse4) .cse3) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_285) c_create_data_~data~0.base) .cse4)))) (bvule (bvadd .cse5 .cse3) .cse0))))) is different from false [2022-11-25 17:31:30,803 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (let ((.cse0 (bvadd (_ bv4 32) |c_create_data_#t~mem9.offset| .cse1)) (.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (bvule .cse0 (select |c_#length| |c_create_data_#t~mem9.base|)) (bvule (bvadd |c_create_data_#t~mem9.offset| .cse1) .cse0) (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv4 32) .cse2 .cse1) (bvadd .cse2 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse3) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 17:31:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:36,849 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2022-11-25 17:31:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:31:36,851 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-25 17:31:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:36,852 INFO L225 Difference]: With dead ends: 304 [2022-11-25 17:31:36,853 INFO L226 Difference]: Without dead ends: 304 [2022-11-25 17:31:36,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=106, Invalid=294, Unknown=12, NotChecked=344, Total=756 [2022-11-25 17:31:36,854 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 27 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:36,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1461 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 897 Invalid, 1 Unknown, 582 Unchecked, 7.3s Time] [2022-11-25 17:31:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-25 17:31:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 264. [2022-11-25 17:31:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 200 states have (on average 1.515) internal successors, (303), 259 states have internal predecessors, (303), 2 states have call successors, (2), 2 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 17:31:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 307 transitions. [2022-11-25 17:31:36,862 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 307 transitions. Word has length 27 [2022-11-25 17:31:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 307 transitions. [2022-11-25 17:31:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 307 transitions. [2022-11-25 17:31:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 17:31:36,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:36,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:36,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,077 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829061, now seen corresponding path program 1 times [2022-11-25 17:31:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316945788] [2022-11-25 17:31:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:37,078 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 17:31:37,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:37,079 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:37,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:31:37,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:37,284 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 17:31:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:37,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:37,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316945788] [2022-11-25 17:31:37,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316945788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:37,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:37,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:31:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948810344] [2022-11-25 17:31:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:37,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:31:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:31:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:37,293 INFO L87 Difference]: Start difference. First operand 264 states and 307 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:37,598 INFO L93 Difference]: Finished difference Result 266 states and 301 transitions. [2022-11-25 17:31:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:31:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-25 17:31:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:37,601 INFO L225 Difference]: With dead ends: 266 [2022-11-25 17:31:37,601 INFO L226 Difference]: Without dead ends: 266 [2022-11-25 17:31:37,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:37,602 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:37,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:31:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-25 17:31:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 260. [2022-11-25 17:31:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 200 states have (on average 1.455) internal successors, (291), 255 states have internal predecessors, (291), 2 states have call successors, (2), 2 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 17:31:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 295 transitions. [2022-11-25 17:31:37,610 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 295 transitions. Word has length 41 [2022-11-25 17:31:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:37,610 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 295 transitions. [2022-11-25 17:31:37,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 295 transitions. [2022-11-25 17:31:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 17:31:37,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:37,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:37,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,826 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829060, now seen corresponding path program 1 times [2022-11-25 17:31:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:37,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525027570] [2022-11-25 17:31:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:37,827 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 17:31:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:37,828 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:37,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:38,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:31:38,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:38,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:31:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:38,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:38,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525027570] [2022-11-25 17:31:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525027570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:38,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:38,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:31:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788876004] [2022-11-25 17:31:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:38,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:31:38,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:31:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:38,086 INFO L87 Difference]: Start difference. First operand 260 states and 295 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:38,501 INFO L93 Difference]: Finished difference Result 262 states and 289 transitions. [2022-11-25 17:31:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:31:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-25 17:31:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:38,504 INFO L225 Difference]: With dead ends: 262 [2022-11-25 17:31:38,504 INFO L226 Difference]: Without dead ends: 262 [2022-11-25 17:31:38,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:31:38,505 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:38,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 233 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:31:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-25 17:31:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2022-11-25 17:31:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 200 states have (on average 1.395) internal successors, (279), 251 states have internal predecessors, (279), 2 states have call successors, (2), 2 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 17:31:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 283 transitions. [2022-11-25 17:31:38,525 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 283 transitions. Word has length 41 [2022-11-25 17:31:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:38,525 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 283 transitions. [2022-11-25 17:31:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 283 transitions. [2022-11-25 17:31:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 17:31:38,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:38,530 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:38,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:38,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:38,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1997336807, now seen corresponding path program 3 times [2022-11-25 17:31:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874758492] [2022-11-25 17:31:38,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:31:38,747 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 17:31:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:38,748 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:38,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:39,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:31:39,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:31:39,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:31:39,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:31:39,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:31:39,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:39,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874758492] [2022-11-25 17:31:39,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874758492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:31:39,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:31:39,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 17:31:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842797453] [2022-11-25 17:31:39,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:31:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:31:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:31:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:31:39,496 INFO L87 Difference]: Start difference. First operand 256 states and 283 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:39,665 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2022-11-25 17:31:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:31:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-25 17:31:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:39,667 INFO L225 Difference]: With dead ends: 233 [2022-11-25 17:31:39,667 INFO L226 Difference]: Without dead ends: 233 [2022-11-25 17:31:39,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:31:39,668 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 156 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:39,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 976 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:31:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-25 17:31:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2022-11-25 17:31:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 226 states have internal predecessors, (247), 2 states have call successors, (2), 2 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 17:31:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2022-11-25 17:31:39,674 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 42 [2022-11-25 17:31:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:39,675 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2022-11-25 17:31:39,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:31:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2022-11-25 17:31:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 17:31:39,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:39,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:39,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:39,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:39,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -663465002, now seen corresponding path program 1 times [2022-11-25 17:31:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606152093] [2022-11-25 17:31:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:39,893 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 17:31:39,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:39,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:39,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:40,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:31:40,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:40,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:31:40,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:40,312 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 9 [2022-11-25 17:31:40,579 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-25 17:31:40,579 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-25 17:31:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 17:31:40,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:42,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:42,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606152093] [2022-11-25 17:31:42,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606152093] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:31:42,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:31:42,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 17:31:42,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062536130] [2022-11-25 17:31:42,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:42,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:31:42,771 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 17:31:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:43,466 INFO L93 Difference]: Finished difference Result 254 states and 275 transitions. [2022-11-25 17:31:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:31:43,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 44 [2022-11-25 17:31:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:43,468 INFO L225 Difference]: With dead ends: 254 [2022-11-25 17:31:43,468 INFO L226 Difference]: Without dead ends: 254 [2022-11-25 17:31:43,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:31:43,469 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 97 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:43,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 201 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:31:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-25 17:31:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 229. [2022-11-25 17:31:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 176 states have (on average 1.3920454545454546) internal successors, (245), 224 states have internal predecessors, (245), 2 states have call successors, (2), 2 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 17:31:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 249 transitions. [2022-11-25 17:31:43,476 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 249 transitions. Word has length 44 [2022-11-25 17:31:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:43,476 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 249 transitions. [2022-11-25 17:31:43,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 17:31:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 249 transitions. [2022-11-25 17:31:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 17:31:43,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:43,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:43,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:43,693 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -663465001, now seen corresponding path program 1 times [2022-11-25 17:31:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201027817] [2022-11-25 17:31:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:43,694 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 17:31:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:43,695 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:31:44,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:44,082 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 17:31:44,088 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 17:31:44,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:44,274 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 9 [2022-11-25 17:31:44,286 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_811 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_51 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_811) v_arrayElimCell_51 (_ bv80 32))))) is different from true [2022-11-25 17:31:44,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:31:44,579 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:31:44,579 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:31:44,601 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:31:44,601 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 17:31:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:31:44,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:45,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:45,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201027817] [2022-11-25 17:31:45,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201027817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:31:45,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519307952] [2022-11-25 17:31:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:45,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:31:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:31:45,029 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:31:45,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 17:31:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:45,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:31:45,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:45,816 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 17:31:45,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:31:45,917 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_927 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_927) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-25 17:31:45,930 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_927 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_927) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 17:31:46,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:31:46,244 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:31:46,245 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:31:46,263 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:31:46,263 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 17:31:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:46,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:46,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1519307952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:46,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:31:46,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-25 17:31:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861741884] [2022-11-25 17:31:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:46,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:31:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:31:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=73, Unknown=3, NotChecked=54, Total=156 [2022-11-25 17:31:46,302 INFO L87 Difference]: Start difference. First operand 229 states and 249 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 17:31:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:47,789 INFO L93 Difference]: Finished difference Result 377 states and 412 transitions. [2022-11-25 17:31:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:31:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 44 [2022-11-25 17:31:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:47,792 INFO L225 Difference]: With dead ends: 377 [2022-11-25 17:31:47,792 INFO L226 Difference]: Without dead ends: 377 [2022-11-25 17:31:47,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=87, Unknown=3, NotChecked=60, Total=182 [2022-11-25 17:31:47,792 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 148 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 493 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:47,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 424 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 493 Unchecked, 1.4s Time] [2022-11-25 17:31:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-25 17:31:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 244. [2022-11-25 17:31:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 189 states have (on average 1.3862433862433863) internal successors, (262), 237 states have internal predecessors, (262), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:31:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 268 transitions. [2022-11-25 17:31:47,800 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 268 transitions. Word has length 44 [2022-11-25 17:31:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 268 transitions. [2022-11-25 17:31:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 17:31:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 268 transitions. [2022-11-25 17:31:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 17:31:47,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:47,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:47,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:48,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-11-25 17:31:48,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:31:48,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1359492876, now seen corresponding path program 1 times [2022-11-25 17:31:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649852143] [2022-11-25 17:31:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:48,223 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 17:31:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:48,224 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:48,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:48,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:31:48,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:48,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:31:48,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:31:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:31:48,591 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 30 treesize of output 39 [2022-11-25 17:31:48,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:31:48,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-25 17:31:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:48,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:48,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649852143] [2022-11-25 17:31:48,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649852143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:48,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:48,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:31:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973740788] [2022-11-25 17:31:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:48,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:31:48,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:31:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:31:48,759 INFO L87 Difference]: Start difference. First operand 244 states and 268 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 17:31:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:49,408 INFO L93 Difference]: Finished difference Result 286 states and 318 transitions. [2022-11-25 17:31:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:31:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 46 [2022-11-25 17:31:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:49,411 INFO L225 Difference]: With dead ends: 286 [2022-11-25 17:31:49,411 INFO L226 Difference]: Without dead ends: 286 [2022-11-25 17:31:49,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:31:49,412 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 28 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 696 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:31:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-25 17:31:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 254. [2022-11-25 17:31:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 199 states have (on average 1.3718592964824121) internal successors, (273), 247 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:31:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 279 transitions. [2022-11-25 17:31:49,419 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 279 transitions. Word has length 46 [2022-11-25 17:31:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:49,419 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 279 transitions. [2022-11-25 17:31:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 17:31:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 279 transitions. [2022-11-25 17:31:49,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 17:31:49,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:49,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:49,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:49,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:49,643 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash 918765396, now seen corresponding path program 1 times [2022-11-25 17:31:49,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:49,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391741915] [2022-11-25 17:31:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:49,644 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 17:31:49,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:49,644 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:49,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (23)] Waiting until timeout for monitored process [2022-11-25 17:31:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:31:49,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:49,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:49,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:49,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391741915] [2022-11-25 17:31:49,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391741915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:49,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:49,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:31:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596565976] [2022-11-25 17:31:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:49,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:31:49,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:31:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:31:49,871 INFO L87 Difference]: Start difference. First operand 254 states and 279 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 17:31:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:49,900 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2022-11-25 17:31:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:31:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 46 [2022-11-25 17:31:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:49,902 INFO L225 Difference]: With dead ends: 262 [2022-11-25 17:31:49,902 INFO L226 Difference]: Without dead ends: 262 [2022-11-25 17:31:49,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 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 17:31:49,903 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 3 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:49,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 449 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:31:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-25 17:31:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2022-11-25 17:31:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 205 states have (on average 1.351219512195122) internal successors, (277), 253 states have internal predecessors, (277), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:31:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2022-11-25 17:31:49,910 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 46 [2022-11-25 17:31:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:49,911 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2022-11-25 17:31:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 17:31:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2022-11-25 17:31:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 17:31:49,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:49,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:49,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (23)] Ended with exit code 0 [2022-11-25 17:31:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:50,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703003, now seen corresponding path program 1 times [2022-11-25 17:31:50,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:50,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537127127] [2022-11-25 17:31:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:50,126 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 17:31:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:50,127 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:50,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:50,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:31:50,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:50,540 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 17:31:50,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:50,650 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 9 [2022-11-25 17:31:50,924 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-25 17:31:50,924 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-25 17:31:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 17:31:51,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:55,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:31:55,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537127127] [2022-11-25 17:31:55,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537127127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:31:55,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2114023934] [2022-11-25 17:31:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:31:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:31:55,167 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:31:55,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-25 17:31:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:31:55,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:55,854 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 17:31:56,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:31:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:31:56,572 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:31:56,573 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 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-25 17:31:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:31:56,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:31:56,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2114023934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:56,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:31:56,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-25 17:31:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024338961] [2022-11-25 17:31:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:31:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:31:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:31:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-11-25 17:31:56,669 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 17:31:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:58,904 INFO L93 Difference]: Finished difference Result 346 states and 373 transitions. [2022-11-25 17:31:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:31:58,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 46 [2022-11-25 17:31:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:58,907 INFO L225 Difference]: With dead ends: 346 [2022-11-25 17:31:58,908 INFO L226 Difference]: Without dead ends: 346 [2022-11-25 17:31:58,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=60, Invalid=244, Unknown=2, NotChecked=0, Total=306 [2022-11-25 17:31:58,909 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 509 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:58,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 374 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 12 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 17:31:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-25 17:31:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 271. [2022-11-25 17:31:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 214 states have (on average 1.3504672897196262) internal successors, (289), 262 states have internal predecessors, (289), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 17:31:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 297 transitions. [2022-11-25 17:31:58,916 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 297 transitions. Word has length 46 [2022-11-25 17:31:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:58,916 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 297 transitions. [2022-11-25 17:31:58,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 17:31:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 297 transitions. [2022-11-25 17:31:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 17:31:58,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:58,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:58,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-11-25 17:31:59,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:31:59,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:59,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:31:59,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703002, now seen corresponding path program 1 times [2022-11-25 17:31:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:31:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724134897] [2022-11-25 17:31:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:59,324 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 17:31:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:31:59,325 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:59,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:31:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:59,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:31:59,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:59,665 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 17:31:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:31:59,849 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 9 [2022-11-25 17:31:59,861 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1477 (_ BitVec 32)) (v_arrayElimCell_67 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1477) v_arrayElimCell_67 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 17:32:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:00,154 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:00,154 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 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-25 17:32:00,174 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:00,174 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 17:32:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:32:00,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:03,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724134897] [2022-11-25 17:32:03,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724134897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1354156135] [2022-11-25 17:32:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:03,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:32:03,147 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:32:03,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-25 17:32:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:03,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:32:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:03,816 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 17:32:03,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:03,879 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 17:32:04,128 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 13 treesize of output 9 [2022-11-25 17:32:04,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:05,036 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:32:05,036 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 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-25 17:32:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:05,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1354156135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:32:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-25 17:32:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184022903] [2022-11-25 17:32:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:32:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:32:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=4, NotChecked=30, Total=306 [2022-11-25 17:32:05,237 INFO L87 Difference]: Start difference. First operand 271 states and 297 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 17:32:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:08,416 INFO L93 Difference]: Finished difference Result 479 states and 523 transitions. [2022-11-25 17:32:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:32:08,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 46 [2022-11-25 17:32:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:08,419 INFO L225 Difference]: With dead ends: 479 [2022-11-25 17:32:08,419 INFO L226 Difference]: Without dead ends: 479 [2022-11-25 17:32:08,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=58, Invalid=282, Unknown=6, NotChecked=34, Total=380 [2022-11-25 17:32:08,420 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 198 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 11 mSolverCounterUnsat, 118 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 118 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:08,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 494 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 457 Invalid, 118 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 17:32:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-25 17:32:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 415. [2022-11-25 17:32:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 352 states have (on average 1.3096590909090908) internal successors, (461), 400 states have internal predecessors, (461), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 477 transitions. [2022-11-25 17:32:08,432 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 477 transitions. Word has length 46 [2022-11-25 17:32:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:08,432 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 477 transitions. [2022-11-25 17:32:08,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 17:32:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 477 transitions. [2022-11-25 17:32:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 17:32:08,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:08,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:08,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:08,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:08,839 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875697, now seen corresponding path program 1 times [2022-11-25 17:32:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:08,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051614897] [2022-11-25 17:32:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:08,841 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 17:32:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:08,841 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:08,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:09,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:32:09,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:09,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:32:09,174 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 17:32:09,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:32:09,372 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 9 [2022-11-25 17:32:09,385 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1702 (_ BitVec 32)) (v_arrayElimCell_74 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1702) v_arrayElimCell_74 (_ bv80 32))))) is different from true [2022-11-25 17:32:09,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:09,739 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:09,740 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:32:09,761 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:09,761 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 17:32:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:32:09,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:10,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:10,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051614897] [2022-11-25 17:32:10,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051614897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:10,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1328823206] [2022-11-25 17:32:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:10,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:10,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:32:10,189 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:32:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-25 17:32:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:32:11,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:11,258 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 17:32:11,268 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 17:32:11,359 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_1819 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1819) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-25 17:32:11,379 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_1819 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1819) |create_data_#t~malloc7.base| (_ bv80 32))))) is different from true [2022-11-25 17:32:11,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:11,787 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:11,787 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:32:11,809 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:11,809 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 17:32:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:11,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:11,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1328823206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:11,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:32:11,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-25 17:32:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313387801] [2022-11-25 17:32:11,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:32:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:11,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:32:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=73, Unknown=3, NotChecked=54, Total=156 [2022-11-25 17:32:11,851 INFO L87 Difference]: Start difference. First operand 415 states and 477 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:32:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:13,387 INFO L93 Difference]: Finished difference Result 600 states and 697 transitions. [2022-11-25 17:32:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:32:13,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 48 [2022-11-25 17:32:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:13,390 INFO L225 Difference]: With dead ends: 600 [2022-11-25 17:32:13,391 INFO L226 Difference]: Without dead ends: 600 [2022-11-25 17:32:13,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=104, Unknown=3, NotChecked=66, Total=210 [2022-11-25 17:32:13,392 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 230 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:13,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 452 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 509 Invalid, 0 Unknown, 387 Unchecked, 1.4s Time] [2022-11-25 17:32:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-25 17:32:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 421. [2022-11-25 17:32:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 358 states have (on average 1.3100558659217878) internal successors, (469), 406 states have internal predecessors, (469), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 485 transitions. [2022-11-25 17:32:13,404 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 485 transitions. Word has length 48 [2022-11-25 17:32:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:13,405 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 485 transitions. [2022-11-25 17:32:13,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:32:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 485 transitions. [2022-11-25 17:32:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 17:32:13,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:13,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:13,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:13,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:13,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:13,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 471257990, now seen corresponding path program 1 times [2022-11-25 17:32:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889668238] [2022-11-25 17:32:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:13,822 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 17:32:13,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:13,823 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:13,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:14,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:32:14,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:14,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:14,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889668238] [2022-11-25 17:32:14,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889668238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:14,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:14,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:32:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829186799] [2022-11-25 17:32:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:14,143 INFO L87 Difference]: Start difference. First operand 421 states and 485 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 17:32:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:14,540 INFO L93 Difference]: Finished difference Result 420 states and 483 transitions. [2022-11-25 17:32:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 48 [2022-11-25 17:32:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:14,543 INFO L225 Difference]: With dead ends: 420 [2022-11-25 17:32:14,543 INFO L226 Difference]: Without dead ends: 420 [2022-11-25 17:32:14,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 17:32:14,544 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 140 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:14,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 215 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:32:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-25 17:32:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-11-25 17:32:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 358 states have (on average 1.3044692737430168) internal successors, (467), 405 states have internal predecessors, (467), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 483 transitions. [2022-11-25 17:32:14,554 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 483 transitions. Word has length 48 [2022-11-25 17:32:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:14,555 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 483 transitions. [2022-11-25 17:32:14,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 17:32:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 483 transitions. [2022-11-25 17:32:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 17:32:14,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:14,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:14,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:14,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:14,769 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 471257991, now seen corresponding path program 1 times [2022-11-25 17:32:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:14,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713217083] [2022-11-25 17:32:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:14,771 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 17:32:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:14,771 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:14,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Waiting until timeout for monitored process [2022-11-25 17:32:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:15,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:32:15,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:15,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:15,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713217083] [2022-11-25 17:32:15,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713217083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:15,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:15,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:32:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364200049] [2022-11-25 17:32:15,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:15,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:32:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:15,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:32:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:32:15,161 INFO L87 Difference]: Start difference. First operand 420 states and 483 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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 17:32:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:15,381 INFO L93 Difference]: Finished difference Result 411 states and 471 transitions. [2022-11-25 17:32:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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 48 [2022-11-25 17:32:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:15,383 INFO L225 Difference]: With dead ends: 411 [2022-11-25 17:32:15,383 INFO L226 Difference]: Without dead ends: 411 [2022-11-25 17:32:15,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:15,383 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 205 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:15,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 178 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:32:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-25 17:32:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2022-11-25 17:32:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 358 states have (on average 1.270949720670391) internal successors, (455), 396 states have internal predecessors, (455), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 471 transitions. [2022-11-25 17:32:15,394 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 471 transitions. Word has length 48 [2022-11-25 17:32:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:15,394 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 471 transitions. [2022-11-25 17:32:15,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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 17:32:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 471 transitions. [2022-11-25 17:32:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 17:32:15,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:15,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:15,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:15,616 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095953, now seen corresponding path program 1 times [2022-11-25 17:32:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:15,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841831851] [2022-11-25 17:32:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:15,617 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 17:32:15,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:15,618 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:15,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:15,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:32:15,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:15,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:16,006 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 17:32:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:16,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:16,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:16,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841831851] [2022-11-25 17:32:16,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841831851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:16,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:16,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75665890] [2022-11-25 17:32:16,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:16,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:16,024 INFO L87 Difference]: Start difference. First operand 411 states and 471 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 17:32:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:16,820 INFO L93 Difference]: Finished difference Result 432 states and 492 transitions. [2022-11-25 17:32:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:32:16,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2022-11-25 17:32:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:16,823 INFO L225 Difference]: With dead ends: 432 [2022-11-25 17:32:16,823 INFO L226 Difference]: Without dead ends: 432 [2022-11-25 17:32:16,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:32:16,824 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 147 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:16,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 357 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-25 17:32:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 410. [2022-11-25 17:32:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 358 states have (on average 1.26536312849162) internal successors, (453), 395 states have internal predecessors, (453), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 469 transitions. [2022-11-25 17:32:16,834 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 469 transitions. Word has length 49 [2022-11-25 17:32:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:16,834 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 469 transitions. [2022-11-25 17:32:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 17:32:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 469 transitions. [2022-11-25 17:32:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 17:32:16,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:16,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:16,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:17,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:17,049 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095954, now seen corresponding path program 1 times [2022-11-25 17:32:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:17,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637664645] [2022-11-25 17:32:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:17,050 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 17:32:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:17,051 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:17,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:32:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:17,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:17,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:17,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 17:32:17,525 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 17:32:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:17,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:17,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:17,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637664645] [2022-11-25 17:32:17,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637664645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:17,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:17,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698430506] [2022-11-25 17:32:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:17,549 INFO L87 Difference]: Start difference. First operand 410 states and 469 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 17:32:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:18,307 INFO L93 Difference]: Finished difference Result 448 states and 507 transitions. [2022-11-25 17:32:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:32:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2022-11-25 17:32:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:18,310 INFO L225 Difference]: With dead ends: 448 [2022-11-25 17:32:18,310 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 17:32:18,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:32:18,311 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 283 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:18,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 305 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 17:32:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 409. [2022-11-25 17:32:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 358 states have (on average 1.2597765363128492) internal successors, (451), 394 states have internal predecessors, (451), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 467 transitions. [2022-11-25 17:32:18,321 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 467 transitions. Word has length 49 [2022-11-25 17:32:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:18,321 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 467 transitions. [2022-11-25 17:32:18,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 17:32:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 467 transitions. [2022-11-25 17:32:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 17:32:18,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:18,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:18,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Ended with exit code 0 [2022-11-25 17:32:18,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:18,536 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:18,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -42553449, now seen corresponding path program 1 times [2022-11-25 17:32:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:18,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766754281] [2022-11-25 17:32:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:18,537 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 17:32:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:18,537 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:18,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:32:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:18,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:19,010 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 17:32:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:19,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:19,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:19,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766754281] [2022-11-25 17:32:19,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766754281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:19,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:19,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816177986] [2022-11-25 17:32:19,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:19,025 INFO L87 Difference]: Start difference. First operand 409 states and 467 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 17:32:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:19,797 INFO L93 Difference]: Finished difference Result 432 states and 490 transitions. [2022-11-25 17:32:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:32:19,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-11-25 17:32:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:19,800 INFO L225 Difference]: With dead ends: 432 [2022-11-25 17:32:19,800 INFO L226 Difference]: Without dead ends: 432 [2022-11-25 17:32:19,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:32:19,801 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 132 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:19,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 360 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-25 17:32:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 408. [2022-11-25 17:32:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 358 states have (on average 1.2541899441340782) internal successors, (449), 393 states have internal predecessors, (449), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 465 transitions. [2022-11-25 17:32:19,809 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 465 transitions. Word has length 53 [2022-11-25 17:32:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:19,810 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 465 transitions. [2022-11-25 17:32:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 17:32:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 465 transitions. [2022-11-25 17:32:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 17:32:19,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:19,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:19,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:20,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:20,024 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -42553448, now seen corresponding path program 1 times [2022-11-25 17:32:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:20,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149547888] [2022-11-25 17:32:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:20,025 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 17:32:20,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:20,026 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:20,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Waiting until timeout for monitored process [2022-11-25 17:32:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:20,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:32:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:20,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:20,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:20,535 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 17:32:20,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 17:32:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:20,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:20,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:20,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149547888] [2022-11-25 17:32:20,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149547888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:20,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:20,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868058457] [2022-11-25 17:32:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:20,573 INFO L87 Difference]: Start difference. First operand 408 states and 465 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 17:32:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:21,335 INFO L93 Difference]: Finished difference Result 448 states and 505 transitions. [2022-11-25 17:32:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:32:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-11-25 17:32:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:21,337 INFO L225 Difference]: With dead ends: 448 [2022-11-25 17:32:21,337 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 17:32:21,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:32:21,338 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 266 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:21,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 308 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 17:32:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 407. [2022-11-25 17:32:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 358 states have (on average 1.2486033519553073) internal successors, (447), 392 states have internal predecessors, (447), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2022-11-25 17:32:21,347 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 53 [2022-11-25 17:32:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:21,347 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2022-11-25 17:32:21,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 17:32:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2022-11-25 17:32:21,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 17:32:21,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:21,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:21,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:21,562 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting create_dataErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982670, now seen corresponding path program 1 times [2022-11-25 17:32:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607700371] [2022-11-25 17:32:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:21,563 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 17:32:21,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:21,564 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:21,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:22,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:32:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:22,190 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 17:32:22,250 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:32:22,250 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 17:32:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:22,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:22,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:22,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607700371] [2022-11-25 17:32:22,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607700371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:32:22,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:32:22,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-25 17:32:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393248896] [2022-11-25 17:32:22,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:32:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:32:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:32:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:32:22,312 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:22,767 INFO L93 Difference]: Finished difference Result 406 states and 461 transitions. [2022-11-25 17:32:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:32:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 17:32:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:22,769 INFO L225 Difference]: With dead ends: 406 [2022-11-25 17:32:22,769 INFO L226 Difference]: Without dead ends: 406 [2022-11-25 17:32:22,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 2 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 17:32:22,770 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 50 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:22,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 238 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:32:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-25 17:32:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-11-25 17:32:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 358 states have (on average 1.2430167597765363) internal successors, (445), 391 states have internal predecessors, (445), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 461 transitions. [2022-11-25 17:32:22,778 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 461 transitions. Word has length 53 [2022-11-25 17:32:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:22,779 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 461 transitions. [2022-11-25 17:32:22,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 461 transitions. [2022-11-25 17:32:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 17:32:22,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:22,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:22,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:22,980 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting create_dataErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982671, now seen corresponding path program 1 times [2022-11-25 17:32:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:22,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388907090] [2022-11-25 17:32:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:22,982 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 17:32:22,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:22,983 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:22,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:23,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:32:23,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:23,650 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 17:32:23,758 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:32:23,759 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 14 [2022-11-25 17:32:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:23,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:24,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:24,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388907090] [2022-11-25 17:32:24,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388907090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:32:24,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:32:24,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-25 17:32:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719607788] [2022-11-25 17:32:24,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:32:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:32:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:32:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:32:24,117 INFO L87 Difference]: Start difference. First operand 406 states and 461 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:24,849 INFO L93 Difference]: Finished difference Result 402 states and 453 transitions. [2022-11-25 17:32:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:32:24,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 17:32:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:24,852 INFO L225 Difference]: With dead ends: 402 [2022-11-25 17:32:24,852 INFO L226 Difference]: Without dead ends: 402 [2022-11-25 17:32:24,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:32:24,853 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 84 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:24,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 254 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-25 17:32:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 388. [2022-11-25 17:32:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 344 states have (on average 1.2296511627906976) internal successors, (423), 373 states have internal predecessors, (423), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 439 transitions. [2022-11-25 17:32:24,861 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 439 transitions. Word has length 53 [2022-11-25 17:32:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:24,862 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 439 transitions. [2022-11-25 17:32:24,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:32:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 439 transitions. [2022-11-25 17:32:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 17:32:24,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:24,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:24,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:25,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:25,078 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156755, now seen corresponding path program 1 times [2022-11-25 17:32:25,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:25,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079821929] [2022-11-25 17:32:25,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:25,080 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 17:32:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:25,081 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:25,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (38)] Waiting until timeout for monitored process [2022-11-25 17:32:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:25,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:32:25,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:25,750 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 11 treesize of output 7 [2022-11-25 17:32:25,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:25,864 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:32:25,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-25 17:32:26,010 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 17:32:26,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:32:26,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-25 17:32:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:32:26,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:26,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:26,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079821929] [2022-11-25 17:32:26,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079821929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:26,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:26,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:32:26,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805901744] [2022-11-25 17:32:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:26,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:32:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:32:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:32:26,102 INFO L87 Difference]: Start difference. First operand 388 states and 439 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 17:32:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:28,090 INFO L93 Difference]: Finished difference Result 467 states and 539 transitions. [2022-11-25 17:32:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:32:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 54 [2022-11-25 17:32:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:28,092 INFO L225 Difference]: With dead ends: 467 [2022-11-25 17:32:28,092 INFO L226 Difference]: Without dead ends: 467 [2022-11-25 17:32:28,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:32:28,092 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 219 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:28,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 558 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:32:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-25 17:32:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 406. [2022-11-25 17:32:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 362 states have (on average 1.2320441988950277) internal successors, (446), 391 states have internal predecessors, (446), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 462 transitions. [2022-11-25 17:32:28,103 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 462 transitions. Word has length 54 [2022-11-25 17:32:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:28,103 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 462 transitions. [2022-11-25 17:32:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 17:32:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 462 transitions. [2022-11-25 17:32:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 17:32:28,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:28,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:28,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (38)] Ended with exit code 0 [2022-11-25 17:32:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:28,310 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156754, now seen corresponding path program 1 times [2022-11-25 17:32:28,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:28,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800261376] [2022-11-25 17:32:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:28,311 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 17:32:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:28,312 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:28,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:28,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 17:32:28,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:28,826 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 17:32:28,866 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:28,866 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 17:32:29,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:29,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:29,275 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 21 treesize of output 20 [2022-11-25 17:32:29,290 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 17:32:29,537 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-25 17:32:29,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-25 17:32:29,558 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 17:32:29,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-25 17:32:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:29,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:29,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800261376] [2022-11-25 17:32:29,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800261376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:29,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:29,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:32:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522088562] [2022-11-25 17:32:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:29,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:32:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:32:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:32:29,604 INFO L87 Difference]: Start difference. First operand 406 states and 462 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 17:32:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:32,680 INFO L93 Difference]: Finished difference Result 516 states and 572 transitions. [2022-11-25 17:32:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:32:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 54 [2022-11-25 17:32:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:32,683 INFO L225 Difference]: With dead ends: 516 [2022-11-25 17:32:32,683 INFO L226 Difference]: Without dead ends: 516 [2022-11-25 17:32:32,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:32:32,683 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 391 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:32,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 634 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 17:32:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-25 17:32:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 406. [2022-11-25 17:32:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 362 states have (on average 1.2265193370165746) internal successors, (444), 391 states have internal predecessors, (444), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 460 transitions. [2022-11-25 17:32:32,696 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 460 transitions. Word has length 54 [2022-11-25 17:32:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:32,696 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 460 transitions. [2022-11-25 17:32:32,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 17:32:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 460 transitions. [2022-11-25 17:32:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 17:32:32,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:32,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:32,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:32,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:32,919 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777396, now seen corresponding path program 1 times [2022-11-25 17:32:32,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:32,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413969962] [2022-11-25 17:32:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:32,920 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 17:32:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:32,921 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:32,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:33,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:32:33,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:33,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:32:33,554 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 17:32:33,687 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) |c_#length|))) is different from true [2022-11-25 17:32:34,105 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 17:32:34,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:34,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:34,436 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 17:32:34,437 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 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 17:32:34,486 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 17:32:34,486 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 22 treesize of output 24 [2022-11-25 17:32:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 17:32:34,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:38,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:38,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413969962] [2022-11-25 17:32:38,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413969962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:38,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [576378042] [2022-11-25 17:32:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:38,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:38,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:32:38,895 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:32:38,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-25 17:32:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:40,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:32:40,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:40,237 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 17:32:40,244 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 17:32:40,791 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 17:32:41,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:41,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:41,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:41,120 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 17:32:41,120 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 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 17:32:41,168 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 17:32:41,169 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 22 treesize of output 24 [2022-11-25 17:32:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 17:32:41,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [576378042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:43,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:32:43,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 9 [2022-11-25 17:32:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110265022] [2022-11-25 17:32:43,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:32:43,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:32:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:32:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=69, Unknown=5, NotChecked=54, Total=156 [2022-11-25 17:32:43,579 INFO L87 Difference]: Start difference. First operand 406 states and 460 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 17:32:43,722 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((create_data_~data~0.base (_ BitVec 32))) (and (exists ((v_ArrVal_3328 (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |c_create_data_#t~malloc7.base| v_ArrVal_3328))) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |c_create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) |c_#length|)))) is different from true [2022-11-25 17:32:43,755 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_3328 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_3329 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3329) |create_data_#t~malloc7.base| v_ArrVal_3328) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|))))) is different from true [2022-11-25 17:32:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:45,236 INFO L93 Difference]: Finished difference Result 565 states and 636 transitions. [2022-11-25 17:32:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:32:45,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 55 [2022-11-25 17:32:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:45,239 INFO L225 Difference]: With dead ends: 565 [2022-11-25 17:32:45,239 INFO L226 Difference]: Without dead ends: 565 [2022-11-25 17:32:45,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=44, Invalid=101, Unknown=7, NotChecked=120, Total=272 [2022-11-25 17:32:45,239 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 198 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 5 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:45,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 571 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 449 Invalid, 19 Unknown, 530 Unchecked, 1.6s Time] [2022-11-25 17:32:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-25 17:32:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 427. [2022-11-25 17:32:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 382 states have (on average 1.2225130890052356) internal successors, (467), 411 states have internal predecessors, (467), 4 states have call successors, (4), 4 states have call predecessors, (4), 11 states have return successors, (14), 11 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:32:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 485 transitions. [2022-11-25 17:32:45,251 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 485 transitions. Word has length 55 [2022-11-25 17:32:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:45,252 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 485 transitions. [2022-11-25 17:32:45,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 17:32:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 485 transitions. [2022-11-25 17:32:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 17:32:45,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:45,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:32:45,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:45,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:45,661 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash 948367783, now seen corresponding path program 1 times [2022-11-25 17:32:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772154583] [2022-11-25 17:32:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:45,662 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 17:32:45,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:45,663 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:46,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:32:46,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:46,134 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 17:32:46,140 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 17:32:46,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:32:46,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-25 17:32:46,384 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_111 (_ BitVec 32)) (v_ArrVal_3666 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3666) v_arrayElimCell_111 (_ bv80 32))))) is different from true [2022-11-25 17:32:46,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:46,789 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:46,789 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:32:46,810 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:46,811 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 17:32:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-25 17:32:46,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:47,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:47,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772154583] [2022-11-25 17:32:47,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772154583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:47,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [729821076] [2022-11-25 17:32:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:47,220 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:47,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:32:47,221 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:32:47,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-25 17:32:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:48,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:32:48,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:48,139 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 17:32:48,146 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 17:32:48,233 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_3794 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_3794) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-25 17:32:48,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:48,697 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:48,698 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:32:48,718 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:48,718 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 17:32:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 17:32:48,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:48,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [729821076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:48,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:32:48,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2022-11-25 17:32:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404085556] [2022-11-25 17:32:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:48,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:32:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:32:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=72, Unknown=2, NotChecked=34, Total=132 [2022-11-25 17:32:48,760 INFO L87 Difference]: Start difference. First operand 427 states and 485 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 17:32:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:49,780 INFO L93 Difference]: Finished difference Result 531 states and 599 transitions. [2022-11-25 17:32:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:32:49,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 56 [2022-11-25 17:32:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:49,782 INFO L225 Difference]: With dead ends: 531 [2022-11-25 17:32:49,782 INFO L226 Difference]: Without dead ends: 531 [2022-11-25 17:32:49,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=86, Unknown=2, NotChecked=38, Total=156 [2022-11-25 17:32:49,783 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 120 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:49,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 344 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 0 Unknown, 250 Unchecked, 1.0s Time] [2022-11-25 17:32:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-11-25 17:32:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 407. [2022-11-25 17:32:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 364 states have (on average 1.217032967032967) internal successors, (443), 393 states have internal predecessors, (443), 4 states have call successors, (4), 4 states have call predecessors, (4), 9 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 459 transitions. [2022-11-25 17:32:49,792 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 459 transitions. Word has length 56 [2022-11-25 17:32:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:49,793 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 459 transitions. [2022-11-25 17:32:49,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 17:32:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 459 transitions. [2022-11-25 17:32:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:32:49,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:49,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:49,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:50,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2022-11-25 17:32:50,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:50,209 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1897094198, now seen corresponding path program 1 times [2022-11-25 17:32:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:50,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851117038] [2022-11-25 17:32:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:50,210 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 17:32:50,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:50,211 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:50,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:50,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:32:50,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:50,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:50,692 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 17:32:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:50,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:50,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:50,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851117038] [2022-11-25 17:32:50,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851117038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:50,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:50,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:50,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12755144] [2022-11-25 17:32:50,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:50,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:32:50,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:50,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:32:50,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:32:50,705 INFO L87 Difference]: Start difference. First operand 407 states and 459 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 17:32:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:51,161 INFO L93 Difference]: Finished difference Result 445 states and 497 transitions. [2022-11-25 17:32:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:32:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 57 [2022-11-25 17:32:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:51,169 INFO L225 Difference]: With dead ends: 445 [2022-11-25 17:32:51,169 INFO L226 Difference]: Without dead ends: 445 [2022-11-25 17:32:51,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:32:51,170 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 151 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:51,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 353 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:32:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-25 17:32:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 409. [2022-11-25 17:32:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 366 states have (on average 1.215846994535519) internal successors, (445), 395 states have internal predecessors, (445), 4 states have call successors, (4), 4 states have call predecessors, (4), 9 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 461 transitions. [2022-11-25 17:32:51,178 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 461 transitions. Word has length 57 [2022-11-25 17:32:51,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:51,178 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 461 transitions. [2022-11-25 17:32:51,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 17:32:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 461 transitions. [2022-11-25 17:32:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:32:51,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:51,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:51,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:51,393 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093746, now seen corresponding path program 1 times [2022-11-25 17:32:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:51,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802027797] [2022-11-25 17:32:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:51,394 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 17:32:51,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:51,395 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:51,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:51,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:32:51,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:51,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:51,893 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 19 treesize of output 11 [2022-11-25 17:32:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:32:51,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:32:51,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:32:51,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802027797] [2022-11-25 17:32:51,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802027797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:32:51,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:32:51,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:32:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489628259] [2022-11-25 17:32:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:32:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:32:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:32:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:32:51,908 INFO L87 Difference]: Start difference. First operand 409 states and 461 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 17:32:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:52,679 INFO L93 Difference]: Finished difference Result 427 states and 479 transitions. [2022-11-25 17:32:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:32:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 57 [2022-11-25 17:32:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:52,681 INFO L225 Difference]: With dead ends: 427 [2022-11-25 17:32:52,681 INFO L226 Difference]: Without dead ends: 427 [2022-11-25 17:32:52,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:32:52,681 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 118 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:52,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 338 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:32:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-25 17:32:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 411. [2022-11-25 17:32:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 368 states have (on average 1.2173913043478262) internal successors, (448), 397 states have internal predecessors, (448), 4 states have call successors, (4), 4 states have call predecessors, (4), 9 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:32:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 464 transitions. [2022-11-25 17:32:52,689 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 464 transitions. Word has length 57 [2022-11-25 17:32:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:52,690 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 464 transitions. [2022-11-25 17:32:52,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 17:32:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 464 transitions. [2022-11-25 17:32:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:32:52,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:52,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:52,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:52,904 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:32:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093745, now seen corresponding path program 1 times [2022-11-25 17:32:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864303856] [2022-11-25 17:32:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:52,905 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 17:32:52,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:52,906 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:52,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:32:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:53,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 17:32:53,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:53,393 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 17:32:53,404 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 17:32:53,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:32:53,644 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 9 [2022-11-25 17:32:53,654 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4146 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_120 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4146) v_arrayElimCell_120 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 17:32:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:53,961 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:32:53,962 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:32:53,986 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:53,987 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 17:32:54,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:54,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:32:54,345 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 17:32:54,360 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 17:32:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:32:54,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:54,700 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 40 treesize of output 32 [2022-11-25 17:32:54,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:54,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:32:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:07,286 WARN L233 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:33:07,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864303856] [2022-11-25 17:33:07,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864303856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1038917558] [2022-11-25 17:33:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:07,287 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:33:07,289 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:33:07,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-25 17:33:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:08,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:33:08,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:08,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:33:09,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-25 17:33:09,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:33:09,184 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 17:33:09,321 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 17:33:09,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-25 17:33:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:33:09,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:09,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1038917558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:09,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:33:09,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2022-11-25 17:33:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675054435] [2022-11-25 17:33:09,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:33:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:33:09,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=457, Unknown=1, NotChecked=42, Total=552 [2022-11-25 17:33:09,450 INFO L87 Difference]: Start difference. First operand 411 states and 464 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 17:33:13,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:33:13,919 INFO L93 Difference]: Finished difference Result 536 states and 605 transitions. [2022-11-25 17:33:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:33:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 57 [2022-11-25 17:33:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:33:13,923 INFO L225 Difference]: With dead ends: 536 [2022-11-25 17:33:13,923 INFO L226 Difference]: Without dead ends: 536 [2022-11-25 17:33:13,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=142, Invalid=983, Unknown=1, NotChecked=64, Total=1190 [2022-11-25 17:33:13,924 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 447 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:33:13,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 784 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:33:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-25 17:33:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 411. [2022-11-25 17:33:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 368 states have (on average 1.2119565217391304) internal successors, (446), 397 states have internal predecessors, (446), 4 states have call successors, (4), 4 states have call predecessors, (4), 9 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 17:33:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 462 transitions. [2022-11-25 17:33:13,933 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 462 transitions. Word has length 57 [2022-11-25 17:33:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:33:13,933 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 462 transitions. [2022-11-25 17:33:13,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 17:33:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 462 transitions. [2022-11-25 17:33:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:33:13,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:33:13,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:33:13,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Ended with exit code 0 [2022-11-25 17:33:14,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2022-11-25 17:33:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:14,350 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:33:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854146, now seen corresponding path program 1 times [2022-11-25 17:33:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:14,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055848188] [2022-11-25 17:33:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:14,351 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 17:33:14,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:14,352 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:33:14,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (48)] Waiting until timeout for monitored process [2022-11-25 17:33:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:15,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:33:15,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:15,162 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 17:33:15,241 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 17:33:15,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:33:15,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 17:33:18,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:18,199 INFO L321 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2022-11-25 17:33:18,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 49 [2022-11-25 17:33:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 17:33:18,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:18,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:18,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055848188] [2022-11-25 17:33:18,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055848188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:18,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1129314396] [2022-11-25 17:33:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:18,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:18,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:33:18,538 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:33:18,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-25 17:33:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:19,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:33:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:21,773 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 17:33:23,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:23,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:23,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:23,248 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 17:33:23,248 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 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-25 17:33:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:33:23,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:23,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1129314396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:23,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:33:23,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2022-11-25 17:33:23,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017544389] [2022-11-25 17:33:23,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:33:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:33:23,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:33:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=413, Unknown=15, NotChecked=0, Total=506 [2022-11-25 17:33:23,631 INFO L87 Difference]: Start difference. First operand 411 states and 462 transitions. Second operand has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 states have internal predecessors, (92), 2 states have call successors, (2), 2 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 17:33:42,127 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 17:33:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:33:48,766 INFO L93 Difference]: Finished difference Result 542 states and 606 transitions. [2022-11-25 17:33:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:33:48,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 states have internal predecessors, (92), 2 states have call successors, (2), 2 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 57 [2022-11-25 17:33:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:33:48,770 INFO L225 Difference]: With dead ends: 542 [2022-11-25 17:33:48,770 INFO L226 Difference]: Without dead ends: 542 [2022-11-25 17:33:48,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=158, Invalid=748, Unknown=24, NotChecked=0, Total=930 [2022-11-25 17:33:48,770 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 702 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 38 mSolverCounterUnsat, 361 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 361 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:33:48,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 649 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 799 Invalid, 361 Unknown, 0 Unchecked, 11.3s Time] [2022-11-25 17:33:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-25 17:33:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 441. [2022-11-25 17:33:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.2045454545454546) internal successors, (477), 426 states have internal predecessors, (477), 4 states have call successors, (4), 4 states have call predecessors, (4), 11 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 17:33:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 497 transitions. [2022-11-25 17:33:48,778 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 497 transitions. Word has length 57 [2022-11-25 17:33:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:33:48,778 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 497 transitions. [2022-11-25 17:33:48,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 states have internal predecessors, (92), 2 states have call successors, (2), 2 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 17:33:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 497 transitions. [2022-11-25 17:33:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:33:48,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:33:48,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:33:48,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:49,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (48)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:33:49,189 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:33:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854147, now seen corresponding path program 1 times [2022-11-25 17:33:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4728508] [2022-11-25 17:33:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:49,190 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 17:33:49,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:49,191 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:33:49,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (50)] Waiting until timeout for monitored process [2022-11-25 17:33:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:49,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:33:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:49,909 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:33:49,909 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 17:33:49,920 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 17:33:49,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:49,969 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 12 treesize of output 14 [2022-11-25 17:33:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:49,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:49,998 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:33:49,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-25 17:33:50,240 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 17:33:50,250 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 5 treesize of output 3 [2022-11-25 17:33:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:54,235 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-25 17:33:54,236 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 3 case distinctions, treesize of input 18 treesize of output 39 [2022-11-25 17:33:54,272 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:33:54,272 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 17:33:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:33:54,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:56,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4728508] [2022-11-25 17:33:56,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4728508] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [708180461] [2022-11-25 17:33:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:56,953 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:56,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:33:56,959 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:33:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-25 17:33:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:58,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:33:58,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:58,354 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 17:33:58,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:58,431 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 17:33:58,757 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 13 treesize of output 9 [2022-11-25 17:33:58,874 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5079 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5080 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (bvult create_data_~data~0.base |c_#StackHeapBarrier|) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5079) |create_data_#t~malloc7.base| v_ArrVal_5080)) (bvult |create_data_#t~malloc7.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-25 17:33:59,605 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((v_ArrVal_5079 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5081 (_ BitVec 32)) (v_ArrVal_5080 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (bvult create_data_~data~0.base |c_#StackHeapBarrier|) (bvult |create_data_#t~malloc7.base| |c_#StackHeapBarrier|) (bvult create_data_~nextData~0.base |c_#StackHeapBarrier|) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5079) |create_data_#t~malloc7.base| v_ArrVal_5080) create_data_~nextData~0.base v_ArrVal_5081))))) is different from true [2022-11-25 17:34:00,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:00,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:00,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:00,344 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 17:34:00,345 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 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-25 17:34:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 17:34:00,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [708180461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:34:03,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:34:03,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-25 17:34:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709543773] [2022-11-25 17:34:03,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:34:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:34:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:34:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=250, Unknown=6, NotChecked=66, Total=380 [2022-11-25 17:34:03,095 INFO L87 Difference]: Start difference. First operand 441 states and 497 transitions. Second operand has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 2 states have call successors, (2), 2 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 17:34:05,469 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 17:34:19,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:34:21,962 WARN L539 Checker$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 17:34:25,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:34:27,514 WARN L539 Checker$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 17:34:29,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:34:32,863 WARN L539 Checker$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 17:34:36,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:34:38,104 WARN L539 Checker$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 17:34:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:34:45,684 INFO L93 Difference]: Finished difference Result 915 states and 999 transitions. [2022-11-25 17:34:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:34:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 2 states have call successors, (2), 2 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 57 [2022-11-25 17:34:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:34:45,689 INFO L225 Difference]: With dead ends: 915 [2022-11-25 17:34:45,689 INFO L226 Difference]: Without dead ends: 915 [2022-11-25 17:34:45,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=225, Invalid=891, Unknown=14, NotChecked=130, Total=1260 [2022-11-25 17:34:45,690 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 840 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 48 mSolverCounterUnsat, 88 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 88 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:34:45,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 776 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1074 Invalid, 88 Unknown, 559 Unchecked, 28.6s Time] [2022-11-25 17:34:45,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-25 17:34:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 504. [2022-11-25 17:34:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 457 states have (on average 1.1925601750547046) internal successors, (545), 486 states have internal predecessors, (545), 4 states have call successors, (4), 4 states have call predecessors, (4), 13 states have return successors, (15), 13 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 17:34:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 564 transitions. [2022-11-25 17:34:45,701 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 564 transitions. Word has length 57 [2022-11-25 17:34:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:34:45,702 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 564 transitions. [2022-11-25 17:34:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 2 states have call successors, (2), 2 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 17:34:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 564 transitions. [2022-11-25 17:34:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 17:34:45,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:34:45,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:45,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (50)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:45,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:34:46,119 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:34:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859878, now seen corresponding path program 1 times [2022-11-25 17:34:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:46,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024947547] [2022-11-25 17:34:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:46,120 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 17:34:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:46,121 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:34:46,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:34:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:46,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:34:46,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:46,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:34:46,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:34:46,979 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |c_create_data_#t~malloc7.base| v_ArrVal_5275) |c_#length|)) (exists ((v_ArrVal_5277 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |c_create_data_#t~malloc7.base|))))) is different from true [2022-11-25 17:34:47,001 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) |c_#length|))) is different from true [2022-11-25 17:34:47,570 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 17:34:47,701 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 17:34:47,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:47,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:47,934 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-25 17:34:47,934 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 3 case distinctions, treesize of input 18 treesize of output 39 [2022-11-25 17:34:48,006 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-25 17:34:48,006 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 31 treesize of output 38 [2022-11-25 17:34:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 17:34:48,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:56,502 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:34:56,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:56,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024947547] [2022-11-25 17:34:56,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024947547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:34:56,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1376444570] [2022-11-25 17:34:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:56,503 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:34:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:34:56,504 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:34:56,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-11-25 17:34:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:57,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:34:57,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:58,005 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 17:34:58,014 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 17:34:58,613 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5481 (_ BitVec 32)) (v_ArrVal_5480 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5481) |create_data_#t~malloc7.base| v_ArrVal_5480) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 17:34:58,780 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5481 (_ BitVec 32)) (v_ArrVal_5480 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5481) |create_data_#t~malloc7.base| v_ArrVal_5480) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 17:34:58,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:58,996 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 17:34:58,996 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 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 17:34:59,054 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 17:34:59,054 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 22 treesize of output 24 [2022-11-25 17:34:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 17:34:59,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:01,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1376444570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:01,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:01,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-25 17:35:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138828590] [2022-11-25 17:35:01,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:35:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:35:01,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=72, Unknown=8, NotChecked=126, Total=240 [2022-11-25 17:35:01,684 INFO L87 Difference]: Start difference. First operand 504 states and 564 transitions. Second operand has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:35:03,975 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) |c_#length|))) (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_5481 (_ BitVec 32)) (v_ArrVal_5480 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5481) |create_data_#t~malloc7.base| v_ArrVal_5480)))))) is different from true [2022-11-25 17:35:04,204 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5481 (_ BitVec 32)) (v_ArrVal_5480 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5481) |create_data_#t~malloc7.base| v_ArrVal_5480) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|))))) is different from true [2022-11-25 17:35:04,443 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5481 (_ BitVec 32)) (v_ArrVal_5480 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5481) |create_data_#t~malloc7.base| v_ArrVal_5480) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_5276 (_ BitVec 32)) (v_ArrVal_5275 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_5277 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5276) |create_data_#t~malloc7.base| v_ArrVal_5275) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_5277) |create_data_#t~malloc7.base|))))) is different from true [2022-11-25 17:35:06,909 WARN L539 Checker$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 17:35:08,970 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 17:35:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:09,594 INFO L93 Difference]: Finished difference Result 701 states and 782 transitions. [2022-11-25 17:35:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:35:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-11-25 17:35:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:09,598 INFO L225 Difference]: With dead ends: 701 [2022-11-25 17:35:09,598 INFO L226 Difference]: Without dead ends: 701 [2022-11-25 17:35:09,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=55, Invalid=126, Unknown=11, NotChecked=270, Total=462 [2022-11-25 17:35:09,599 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 190 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 5 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 1183 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:09,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 552 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 449 Invalid, 29 Unknown, 1183 Unchecked, 5.7s Time] [2022-11-25 17:35:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-11-25 17:35:09,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 528. [2022-11-25 17:35:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 480 states have (on average 1.1916666666666667) internal successors, (572), 509 states have internal predecessors, (572), 4 states have call successors, (4), 4 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 17:35:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 592 transitions. [2022-11-25 17:35:09,609 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 592 transitions. Word has length 59 [2022-11-25 17:35:09,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:09,610 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 592 transitions. [2022-11-25 17:35:09,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:35:09,610 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 592 transitions. [2022-11-25 17:35:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 17:35:09,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:09,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:09,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:09,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:10,022 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1611932791, now seen corresponding path program 1 times [2022-11-25 17:35:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:10,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709815642] [2022-11-25 17:35:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:10,023 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 17:35:10,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:10,024 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:10,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:10,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 17:35:10,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:10,641 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 17:35:10,658 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 17:35:10,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:35:10,941 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 9 [2022-11-25 17:35:10,955 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5610 (_ BitVec 32)) (v_arrayElimCell_158 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5610) v_arrayElimCell_158 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 17:35:11,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:11,307 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:35:11,308 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:35:11,334 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:35:11,335 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 17:35:11,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:11,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:11,812 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 17:35:11,826 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 17:35:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:35:11,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:12,246 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 40 treesize of output 32 [2022-11-25 17:35:12,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:12,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:12,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:12,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:21,086 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:35:21,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709815642] [2022-11-25 17:35:21,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709815642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058527633] [2022-11-25 17:35:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:35:21,089 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:35:21,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-11-25 17:35:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:22,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 17:35:22,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:22,540 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 17:35:22,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:35:22,801 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_5739 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5739) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-25 17:35:22,816 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5739 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5739) |create_data_#t~malloc7.base| (_ bv80 32))))) is different from true [2022-11-25 17:35:23,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:23,195 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:35:23,195 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:35:23,220 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:35:23,221 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 17:35:23,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:23,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:23,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-25 17:35:24,000 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 17:35:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:24,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:24,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058527633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:24,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:35:24,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 16 [2022-11-25 17:35:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439149222] [2022-11-25 17:35:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:24,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:35:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:24,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:35:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=257, Unknown=3, NotChecked=102, Total=420 [2022-11-25 17:35:24,054 INFO L87 Difference]: Start difference. First operand 528 states and 592 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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 17:35:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:26,138 INFO L93 Difference]: Finished difference Result 812 states and 923 transitions. [2022-11-25 17:35:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:35:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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 61 [2022-11-25 17:35:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:26,142 INFO L225 Difference]: With dead ends: 812 [2022-11-25 17:35:26,143 INFO L226 Difference]: Without dead ends: 812 [2022-11-25 17:35:26,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=90, Invalid=339, Unknown=3, NotChecked=120, Total=552 [2022-11-25 17:35:26,144 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 362 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:26,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 497 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 408 Invalid, 1 Unknown, 625 Unchecked, 1.5s Time] [2022-11-25 17:35:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-25 17:35:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 637. [2022-11-25 17:35:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 581 states have (on average 1.2030981067125646) internal successors, (699), 610 states have internal predecessors, (699), 8 states have call successors, (8), 4 states have call predecessors, (8), 18 states have return successors, (40), 22 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-25 17:35:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 747 transitions. [2022-11-25 17:35:26,158 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 747 transitions. Word has length 61 [2022-11-25 17:35:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:26,159 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 747 transitions. [2022-11-25 17:35:26,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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 17:35:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 747 transitions. [2022-11-25 17:35:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 17:35:26,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:26,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:26,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:26,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2022-11-25 17:35:26,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:26,577 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 939726753, now seen corresponding path program 1 times [2022-11-25 17:35:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:26,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449090983] [2022-11-25 17:35:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:26,578 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 17:35:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:26,579 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:26,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:27,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:35:27,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:27,195 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 11 treesize of output 7 [2022-11-25 17:35:27,285 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 17:35:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:27,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:27,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449090983] [2022-11-25 17:35:27,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449090983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:27,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:27,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:35:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439269779] [2022-11-25 17:35:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:27,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:27,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:27,304 INFO L87 Difference]: Start difference. First operand 637 states and 747 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 17:35:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:28,186 INFO L93 Difference]: Finished difference Result 652 states and 761 transitions. [2022-11-25 17:35:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:35:28,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 64 [2022-11-25 17:35:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:28,190 INFO L225 Difference]: With dead ends: 652 [2022-11-25 17:35:28,190 INFO L226 Difference]: Without dead ends: 652 [2022-11-25 17:35:28,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:28,191 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 127 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:28,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 333 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 17:35:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-25 17:35:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2022-11-25 17:35:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 584 states have (on average 1.2037671232876712) internal successors, (703), 613 states have internal predecessors, (703), 8 states have call successors, (8), 4 states have call predecessors, (8), 18 states have return successors, (40), 22 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-25 17:35:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 751 transitions. [2022-11-25 17:35:28,203 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 751 transitions. Word has length 64 [2022-11-25 17:35:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:28,203 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 751 transitions. [2022-11-25 17:35:28,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 17:35:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 751 transitions. [2022-11-25 17:35:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 17:35:28,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:28,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:28,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:28,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:28,419 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:28,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 939726754, now seen corresponding path program 1 times [2022-11-25 17:35:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:28,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131261368] [2022-11-25 17:35:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:28,420 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 17:35:28,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:28,421 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:28,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (57)] Waiting until timeout for monitored process [2022-11-25 17:35:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:28,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:35:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:29,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:29,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:29,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 17:35:29,248 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 17:35:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:29,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:29,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131261368] [2022-11-25 17:35:29,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131261368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:29,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:29,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:35:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61580901] [2022-11-25 17:35:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:29,276 INFO L87 Difference]: Start difference. First operand 640 states and 751 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 17:35:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:30,270 INFO L93 Difference]: Finished difference Result 668 states and 777 transitions. [2022-11-25 17:35:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:35:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 64 [2022-11-25 17:35:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:30,274 INFO L225 Difference]: With dead ends: 668 [2022-11-25 17:35:30,274 INFO L226 Difference]: Without dead ends: 668 [2022-11-25 17:35:30,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:35:30,275 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 327 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:35:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-25 17:35:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 640. [2022-11-25 17:35:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 584 states have (on average 1.202054794520548) internal successors, (702), 613 states have internal predecessors, (702), 8 states have call successors, (8), 4 states have call predecessors, (8), 18 states have return successors, (40), 22 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-25 17:35:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 750 transitions. [2022-11-25 17:35:30,286 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 750 transitions. Word has length 64 [2022-11-25 17:35:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:30,287 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 750 transitions. [2022-11-25 17:35:30,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 17:35:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 750 transitions. [2022-11-25 17:35:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:35:30,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:30,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:30,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (57)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:30,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:30,503 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash 504851823, now seen corresponding path program 1 times [2022-11-25 17:35:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99992894] [2022-11-25 17:35:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:30,504 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 17:35:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:30,505 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:31,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 17:35:31,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:31,167 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 17:35:31,183 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 17:35:31,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:35:31,474 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 15 treesize of output 9 [2022-11-25 17:35:31,487 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6097 (_ BitVec 32)) (v_arrayElimCell_173 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_6097) v_arrayElimCell_173 (_ bv80 32))))) is different from true [2022-11-25 17:35:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:31,853 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:35:31,854 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:35:31,880 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:35:31,880 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 17:35:32,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:32,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:32,372 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 17:35:32,391 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 17:35:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 17:35:32,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:32,874 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 40 treesize of output 32 [2022-11-25 17:35:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:32,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:32,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:39,609 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:35:39,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99992894] [2022-11-25 17:35:39,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99992894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [167074] [2022-11-25 17:35:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:39,611 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:35:39,612 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:35:39,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-25 17:35:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 17:35:40,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:41,027 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 17:35:41,037 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 17:35:41,283 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_6227 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_6227) |create_data_#t~malloc7.base| (_ bv80 32)))))) is different from true [2022-11-25 17:35:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:35:41,649 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 17:35:41,649 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 17:35:41,674 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:35:41,675 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 17:35:41,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:41,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:42,446 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 17:35:42,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 17:35:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:42,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:42,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [167074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:42,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:35:42,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-25 17:35:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871725173] [2022-11-25 17:35:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:42,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-25 17:35:42,502 INFO L87 Difference]: Start difference. First operand 640 states and 750 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 17:35:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:45,141 INFO L93 Difference]: Finished difference Result 845 states and 981 transitions. [2022-11-25 17:35:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:35:45,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 65 [2022-11-25 17:35:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:45,145 INFO L225 Difference]: With dead ends: 845 [2022-11-25 17:35:45,145 INFO L226 Difference]: Without dead ends: 845 [2022-11-25 17:35:45,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=88, Invalid=338, Unknown=2, NotChecked=78, Total=506 [2022-11-25 17:35:45,146 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 249 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:45,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 675 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 577 Invalid, 0 Unknown, 342 Unchecked, 2.1s Time] [2022-11-25 17:35:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-25 17:35:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 674. [2022-11-25 17:35:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 616 states have (on average 1.1964285714285714) internal successors, (737), 645 states have internal predecessors, (737), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:35:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 789 transitions. [2022-11-25 17:35:45,161 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 789 transitions. Word has length 65 [2022-11-25 17:35:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:45,161 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 789 transitions. [2022-11-25 17:35:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 17:35:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 789 transitions. [2022-11-25 17:35:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:35:45,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:45,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:45,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:45,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:45,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:45,579 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash -665539789, now seen corresponding path program 1 times [2022-11-25 17:35:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:45,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273075435] [2022-11-25 17:35:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:45,580 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 17:35:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:45,581 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:45,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (60)] Waiting until timeout for monitored process [2022-11-25 17:35:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:46,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:35:46,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:46,316 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:35:46,316 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-25 17:35:46,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:46,462 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 17:35:46,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-25 17:35:46,575 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 17:35:46,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-25 17:35:46,693 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 17:35:46,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2022-11-25 17:35:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:46,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:46,933 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 36 treesize of output 32 [2022-11-25 17:35:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:47,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:47,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273075435] [2022-11-25 17:35:47,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273075435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:47,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:47,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-25 17:35:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43102987] [2022-11-25 17:35:47,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:47,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:35:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:35:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:35:47,231 INFO L87 Difference]: Start difference. First operand 674 states and 789 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:35:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:49,593 INFO L93 Difference]: Finished difference Result 685 states and 803 transitions. [2022-11-25 17:35:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:35:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2022-11-25 17:35:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:49,598 INFO L225 Difference]: With dead ends: 685 [2022-11-25 17:35:49,598 INFO L226 Difference]: Without dead ends: 685 [2022-11-25 17:35:49,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:35:49,598 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 244 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:49,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 645 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 17:35:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-25 17:35:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 673. [2022-11-25 17:35:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 616 states have (on average 1.1899350649350648) internal successors, (733), 644 states have internal predecessors, (733), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:35:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 785 transitions. [2022-11-25 17:35:49,612 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 785 transitions. Word has length 65 [2022-11-25 17:35:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:49,612 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 785 transitions. [2022-11-25 17:35:49,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:35:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 785 transitions. [2022-11-25 17:35:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:35:49,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:49,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:49,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (60)] Ended with exit code 0 [2022-11-25 17:35:49,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:49,822 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:35:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash -665539788, now seen corresponding path program 1 times [2022-11-25 17:35:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:49,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206780973] [2022-11-25 17:35:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:49,823 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 17:35:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:49,824 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:35:49,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Waiting until timeout for monitored process [2022-11-25 17:35:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:50,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 17:35:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:50,610 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:35:50,611 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:35:50,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:50,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:35:50,910 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-25 17:35:50,910 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 17 treesize of output 17 [2022-11-25 17:35:50,920 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 16 treesize of output 18 [2022-11-25 17:35:51,076 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 17:35:51,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-25 17:35:51,119 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 17:35:51,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-25 17:35:51,308 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 17:35:51,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2022-11-25 17:35:51,314 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 17:35:51,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2022-11-25 17:35:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:35:51,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:54,386 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 36 treesize of output 28 [2022-11-25 17:35:54,429 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 66 treesize of output 62 [2022-11-25 17:35:54,434 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 102 treesize of output 94 [2022-11-25 17:36:23,665 WARN L233 SmtUtils]: Spent 27.67s on a formula simplification. DAG size of input: 69 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:36:24,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:36:24,014 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 103 treesize of output 155 [2022-11-25 17:36:28,245 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 122 treesize of output 118 [2022-11-25 17:36:28,312 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 17:36:28,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 345 treesize of output 340 [2022-11-25 17:36:28,847 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 122 treesize of output 118 [2022-11-25 17:36:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:36:29,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:29,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206780973] [2022-11-25 17:36:29,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206780973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:36:29,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:36:29,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-25 17:36:29,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465671290] [2022-11-25 17:36:29,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:36:29,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:36:29,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:36:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:36:29,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=228, Unknown=1, NotChecked=0, Total=272 [2022-11-25 17:36:29,058 INFO L87 Difference]: Start difference. First operand 673 states and 785 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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 17:36:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:34,204 INFO L93 Difference]: Finished difference Result 701 states and 816 transitions. [2022-11-25 17:36:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:36:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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 65 [2022-11-25 17:36:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:34,209 INFO L225 Difference]: With dead ends: 701 [2022-11-25 17:36:34,209 INFO L226 Difference]: Without dead ends: 701 [2022-11-25 17:36:34,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=131, Invalid=420, Unknown=1, NotChecked=0, Total=552 [2022-11-25 17:36:34,210 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 280 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:34,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 704 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 17:36:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-11-25 17:36:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 672. [2022-11-25 17:36:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 616 states have (on average 1.1834415584415585) internal successors, (729), 643 states have internal predecessors, (729), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:36:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 781 transitions. [2022-11-25 17:36:34,238 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 781 transitions. Word has length 65 [2022-11-25 17:36:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:34,238 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 781 transitions. [2022-11-25 17:36:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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 17:36:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 781 transitions. [2022-11-25 17:36:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:36:34,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:34,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:34,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:36:34,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:34,455 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:36:34,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364406, now seen corresponding path program 1 times [2022-11-25 17:36:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:34,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174008635] [2022-11-25 17:36:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:34,456 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 17:36:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:34,457 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:35,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 17:36:35,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:36:35,397 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 17:36:35,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:35,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:35,708 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:36:35,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-25 17:36:35,865 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 17:36:35,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:36:35,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-25 17:36:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:36:35,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:36:35,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:35,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174008635] [2022-11-25 17:36:35,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174008635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:35,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:35,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:36:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965365509] [2022-11-25 17:36:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:36:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:36:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:36:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:36:35,993 INFO L87 Difference]: Start difference. First operand 672 states and 781 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 17:36:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:38,430 INFO L93 Difference]: Finished difference Result 771 states and 940 transitions. [2022-11-25 17:36:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:36:38,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 65 [2022-11-25 17:36:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:38,435 INFO L225 Difference]: With dead ends: 771 [2022-11-25 17:36:38,435 INFO L226 Difference]: Without dead ends: 771 [2022-11-25 17:36:38,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:36:38,435 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 320 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:38,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 550 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 17:36:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-25 17:36:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 692. [2022-11-25 17:36:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 636 states have (on average 1.1886792452830188) internal successors, (756), 663 states have internal predecessors, (756), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:36:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 808 transitions. [2022-11-25 17:36:38,451 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 808 transitions. Word has length 65 [2022-11-25 17:36:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:38,451 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 808 transitions. [2022-11-25 17:36:38,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 17:36:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 808 transitions. [2022-11-25 17:36:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:36:38,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:38,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:38,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:38,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:38,666 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:36:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:38,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364405, now seen corresponding path program 1 times [2022-11-25 17:36:38,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:38,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897988769] [2022-11-25 17:36:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:38,668 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 17:36:38,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:38,668 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:38,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:39,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 17:36:39,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:36:39,542 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 17:36:39,569 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:36:39,570 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 17:36:39,672 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 17:36:39,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:39,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:40,046 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 21 treesize of output 20 [2022-11-25 17:36:40,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 17:36:40,289 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-25 17:36:40,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2022-11-25 17:36:40,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-25 17:36:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:36:40,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:36:40,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897988769] [2022-11-25 17:36:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897988769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:40,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:40,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:36:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35024730] [2022-11-25 17:36:40,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:36:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:36:40,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:36:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:36:40,348 INFO L87 Difference]: Start difference. First operand 692 states and 808 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 17:36:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:43,795 INFO L93 Difference]: Finished difference Result 786 states and 903 transitions. [2022-11-25 17:36:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:36:43,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 65 [2022-11-25 17:36:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:43,799 INFO L225 Difference]: With dead ends: 786 [2022-11-25 17:36:43,799 INFO L226 Difference]: Without dead ends: 786 [2022-11-25 17:36:43,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:36:43,799 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 354 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:43,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 649 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:36:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-25 17:36:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 686. [2022-11-25 17:36:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 630 states have (on average 1.1873015873015873) internal successors, (748), 657 states have internal predecessors, (748), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:36:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 800 transitions. [2022-11-25 17:36:43,811 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 800 transitions. Word has length 65 [2022-11-25 17:36:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:43,812 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 800 transitions. [2022-11-25 17:36:43,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 17:36:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 800 transitions. [2022-11-25 17:36:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:36:43,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:43,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:43,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:36:44,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:44,030 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:36:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284034, now seen corresponding path program 1 times [2022-11-25 17:36:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:44,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317524239] [2022-11-25 17:36:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:44,031 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 17:36:44,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:44,032 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:44,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (64)] Waiting until timeout for monitored process [2022-11-25 17:36:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:44,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:36:44,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:36:44,707 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 19 [2022-11-25 17:36:44,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:36:44,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-25 17:36:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:36:44,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:36:44,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317524239] [2022-11-25 17:36:44,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317524239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:44,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:44,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:36:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246661078] [2022-11-25 17:36:44,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:44,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:36:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:36:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:36:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:36:44,835 INFO L87 Difference]: Start difference. First operand 686 states and 800 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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 17:36:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:46,626 INFO L93 Difference]: Finished difference Result 723 states and 841 transitions. [2022-11-25 17:36:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:36:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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 66 [2022-11-25 17:36:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:46,629 INFO L225 Difference]: With dead ends: 723 [2022-11-25 17:36:46,629 INFO L226 Difference]: Without dead ends: 723 [2022-11-25 17:36:46,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:36:46,629 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 51 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:46,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 563 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:36:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-25 17:36:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 703. [2022-11-25 17:36:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 647 states have (on average 1.1916537867078825) internal successors, (771), 674 states have internal predecessors, (771), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:36:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 823 transitions. [2022-11-25 17:36:46,639 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 823 transitions. Word has length 66 [2022-11-25 17:36:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:46,639 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 823 transitions. [2022-11-25 17:36:46,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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 17:36:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 823 transitions. [2022-11-25 17:36:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:36:46,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:46,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:46,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (64)] Ended with exit code 0 [2022-11-25 17:36:46,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:46,841 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:36:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284035, now seen corresponding path program 1 times [2022-11-25 17:36:46,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298756173] [2022-11-25 17:36:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:46,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:36:46,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:46,843 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:46,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:36:47,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 17:36:47,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:36:47,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:47,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:36:47,939 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 17:36:47,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 17:36:48,665 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:36:48,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2022-11-25 17:36:48,695 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-25 17:36:48,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-25 17:36:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 17:36:48,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:36:48,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:48,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298756173] [2022-11-25 17:36:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298756173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:36:48,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:36:48,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 17:36:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227231404] [2022-11-25 17:36:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:36:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:36:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:36:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:36:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:36:48,827 INFO L87 Difference]: Start difference. First operand 703 states and 823 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 17:36:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:36:53,336 INFO L93 Difference]: Finished difference Result 809 states and 984 transitions. [2022-11-25 17:36:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:36:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 66 [2022-11-25 17:36:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:36:53,340 INFO L225 Difference]: With dead ends: 809 [2022-11-25 17:36:53,340 INFO L226 Difference]: Without dead ends: 809 [2022-11-25 17:36:53,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-11-25 17:36:53,341 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 252 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:36:53,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 960 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 17:36:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-11-25 17:36:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 728. [2022-11-25 17:36:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 672 states have (on average 1.193452380952381) internal successors, (802), 699 states have internal predecessors, (802), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (44), 24 states have call predecessors, (44), 8 states have call successors, (44) [2022-11-25 17:36:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 854 transitions. [2022-11-25 17:36:53,356 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 854 transitions. Word has length 66 [2022-11-25 17:36:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:36:53,356 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 854 transitions. [2022-11-25 17:36:53,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 17:36:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 854 transitions. [2022-11-25 17:36:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:36:53,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:53,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:36:53,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:53,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:53,574 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:36:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627081, now seen corresponding path program 2 times [2022-11-25 17:36:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:53,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516560326] [2022-11-25 17:36:53,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:36:53,575 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 17:36:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:53,576 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:53,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:36:54,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:36:54,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:36:54,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:36:54,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:36:54,626 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 17:36:54,637 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 17:36:54,821 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7410 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7409 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7410) |create_data_#t~malloc7.base| v_ArrVal_7409)))) is different from true [2022-11-25 17:36:55,317 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7410 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7409 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7410) |create_data_#t~malloc7.base| v_ArrVal_7409) c_create_data_~nextData~0.base (_ bv16 32))))) is different from true [2022-11-25 17:36:55,539 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7410 (_ BitVec 32)) (v_ArrVal_7409 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_create_data_~data~0.base_130 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store |c_old(#length)| v_create_data_~data~0.base_130 v_ArrVal_7410) |create_data_#t~malloc7.base| v_ArrVal_7409) create_data_~data~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_130 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_130)))) is different from true [2022-11-25 17:36:55,567 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7410 (_ BitVec 32)) (v_ArrVal_7409 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_create_data_~data~0.base_130 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_130 v_ArrVal_7410) |create_data_#t~malloc7.base| v_ArrVal_7409) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_130 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_130)))) is different from true [2022-11-25 17:36:55,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:36:55,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:36:55,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:36:56,038 INFO L321 Elim1Store]: treesize reduction 83, result has 33.6 percent of original size [2022-11-25 17:36:56,039 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 4 case distinctions, treesize of input 21 treesize of output 50 [2022-11-25 17:36:56,104 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 17:36:56,105 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 22 treesize of output 24 [2022-11-25 17:36:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-25 17:36:56,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:36:56,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516560326] [2022-11-25 17:36:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516560326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:36:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [953227758] [2022-11-25 17:36:56,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:36:56,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:36:56,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:36:56,806 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:36:56,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2022-11-25 17:36:58,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:36:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070498788] [2022-11-25 17:36:58,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:36:58,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:36:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:36:58,054 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:36:58,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (67)] Forceful destruction successful, exit code 1 [2022-11-25 17:36:58,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-25 17:37:00,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:37:00,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:37:00,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 17:37:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:37:00,049 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 17:37:00,057 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 17:37:00,619 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7955 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_7958 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7955) |create_data_#t~malloc7.base| v_ArrVal_7958) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 17:37:01,165 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:37:01,165 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 17:37:01,195 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_create_data_~data~0.base_138 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7955 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_7958 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_138)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_138 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_138 v_ArrVal_7955) |create_data_#t~malloc7.base| v_ArrVal_7958) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (not (= create_data_~nextData~0.base create_data_~data~0.base)))) is different from true [2022-11-25 17:37:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:01,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:01,752 INFO L321 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2022-11-25 17:37:01,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2022-11-25 17:37:01,824 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 17:37:01,824 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 22 treesize of output 24 [2022-11-25 17:37:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 12 not checked. [2022-11-25 17:37:02,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:37:02,321 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-25 17:37:02,321 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 15 treesize of output 14 [2022-11-25 17:37:08,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070498788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:37:08,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:37:08,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-25 17:37:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144500258] [2022-11-25 17:37:08,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:37:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:37:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:37:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:37:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=129, Unknown=8, NotChecked=162, Total=342 [2022-11-25 17:37:08,682 INFO L87 Difference]: Start difference. First operand 728 states and 854 transitions. Second operand has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:37:14,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:37:19,896 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7410 (_ BitVec 32)) (v_ArrVal_7409 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_create_data_~data~0.base_130 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_130 v_ArrVal_7410) |create_data_#t~malloc7.base| v_ArrVal_7409) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_130 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_130)))) (exists ((v_create_data_~data~0.base_138 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7955 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_7958 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_138)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_138 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_138 v_ArrVal_7955) |create_data_#t~malloc7.base| v_ArrVal_7958) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (not (= create_data_~nextData~0.base create_data_~data~0.base))))) is different from true [2022-11-25 17:37:22,900 WARN L539 Checker$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 17:37:25,702 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 17:37:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:37:28,623 INFO L93 Difference]: Finished difference Result 1218 states and 1482 transitions. [2022-11-25 17:37:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:37:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-25 17:37:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:37:28,628 INFO L225 Difference]: With dead ends: 1218 [2022-11-25 17:37:28,628 INFO L226 Difference]: Without dead ends: 1218 [2022-11-25 17:37:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=66, Invalid=225, Unknown=9, NotChecked=252, Total=552 [2022-11-25 17:37:28,628 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 242 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 17 mSolverCounterUnsat, 72 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 72 IncrementalHoareTripleChecker+Unknown, 1573 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:37:28,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 926 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 941 Invalid, 72 Unknown, 1573 Unchecked, 14.5s Time] [2022-11-25 17:37:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-11-25 17:37:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 705. [2022-11-25 17:37:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 652 states have (on average 1.1855828220858895) internal successors, (773), 681 states have internal predecessors, (773), 8 states have call successors, (8), 4 states have call predecessors, (8), 17 states have return successors, (40), 19 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-25 17:37:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 821 transitions. [2022-11-25 17:37:28,648 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 821 transitions. Word has length 66 [2022-11-25 17:37:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:37:28,648 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 821 transitions. [2022-11-25 17:37:28,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:37:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 821 transitions. [2022-11-25 17:37:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 17:37:28,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:37:28,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:28,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:37:28,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-25 17:37:29,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:37:29,067 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 17:37:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:37:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash 803066894, now seen corresponding path program 1 times [2022-11-25 17:37:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:37:29,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836380348] [2022-11-25 17:37:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:37:29,068 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 17:37:29,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:37:29,068 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 17:37:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43df8c63-166d-4755-9504-bbb2998aa54d/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 (69)] Waiting until timeout for monitored process [2022-11-25 17:37:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:37:29,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-25 17:37:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:37:29,987 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 17:37:30,051 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:37:30,051 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 17:37:30,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:37:30,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:37:30,519 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:37:30,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-25 17:37:30,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:30,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 17:37:30,646 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:37:30,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-25 17:37:30,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:30,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 17:37:30,735 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 24 treesize of output 12 [2022-11-25 17:37:30,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:30,801 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 16 treesize of output 18 [2022-11-25 17:37:32,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:32,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:32,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:32,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:37:32,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-25 17:37:33,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-25 17:37:33,105 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 17:37:35,308 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-25 17:37:35,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 37 [2022-11-25 17:37:35,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:37:35,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 22 [2022-11-25 17:37:35,661 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 30 [2022-11-25 17:37:35,673 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 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-25 17:37:36,463 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-25 17:37:36,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 48 [2022-11-25 17:37:36,758 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 17:37:36,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2022-11-25 17:37:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 17:37:36,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:37:37,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:37:37,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6534 treesize of output 6167 [2022-11-25 17:42:12,915 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 23 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 17:42:26,288 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 17:44:04,309 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)