./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0219.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0219.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN --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 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 --- 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-6b4ec56 [2022-11-20 09:27:23,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:23,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:23,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:23,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:23,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:23,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:23,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:23,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:23,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:23,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:23,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:23,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:23,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:23,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:23,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:23,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:23,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:23,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:23,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:23,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:23,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:23,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:23,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:23,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:23,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:23,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:23,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:23,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:23,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:23,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:23,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:23,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:23,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:23,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:23,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:23,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:23,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:23,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:23,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:23,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:23,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 09:27:23,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:23,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:23,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:23,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:23,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:23,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:23,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:23,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:23,922 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:23,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:23,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:23,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:23,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:23,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:23,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:23,924 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:27:23,924 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:27:23,924 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:27:23,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:23,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:27:23,925 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:23,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:23,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:23,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:23,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:23,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:23,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:23,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:23,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:23,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:23,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 [2022-11-20 09:27:24,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:24,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:24,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:24,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:24,293 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:24,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0219.i [2022-11-20 09:27:27,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:27,632 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:27,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/sv-benchmarks/c/memsafety/test-0219.i [2022-11-20 09:27:27,652 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/ddbccd7f2/c54f052de03e40e8b7ea29d2f8d85311/FLAG3eee46d96 [2022-11-20 09:27:27,670 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/ddbccd7f2/c54f052de03e40e8b7ea29d2f8d85311 [2022-11-20 09:27:27,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:27,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:27,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:27,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:27,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:27,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297f71e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27, skipping insertion in model container [2022-11-20 09:27:27,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:27,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:28,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:28,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:28,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:28,319 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:28,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28 WrapperNode [2022-11-20 09:27:28,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:28,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:28,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:28,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:28,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,366 INFO L138 Inliner]: procedures = 180, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 113 [2022-11-20 09:27:28,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:28,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:28,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:28,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:28,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:28,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:28,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:28,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:28,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (1/1) ... [2022-11-20 09:27:28,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:28,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:28,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2022-11-20 09:27:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2022-11-20 09:27:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:27:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:28,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:27:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:28,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:28,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:28,749 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:28,752 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:29,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:29,321 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:29,321 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:27:29,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:29 BoogieIcfgContainer [2022-11-20 09:27:29,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:29,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:29,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:29,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:27" (1/3) ... [2022-11-20 09:27:29,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@befd71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:29, skipping insertion in model container [2022-11-20 09:27:29,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:28" (2/3) ... [2022-11-20 09:27:29,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@befd71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:29, skipping insertion in model container [2022-11-20 09:27:29,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:29" (3/3) ... [2022-11-20 09:27:29,336 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0219.i [2022-11-20 09:27:29,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:29,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-20 09:27:29,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:29,435 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18f5b822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:29,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-20 09:27:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 105 states have internal predecessors, (117), 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) [2022-11-20 09:27:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:27:29,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:29,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:27:29,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash 928072, now seen corresponding path program 1 times [2022-11-20 09:27:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245770058] [2022-11-20 09:27:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:29,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245770058] [2022-11-20 09:27:29,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245770058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:29,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021383833] [2022-11-20 09:27:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:27:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:27:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:27:29,705 INFO L87 Difference]: Start difference. First operand has 109 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 105 states have internal predecessors, (117), 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) [2022-11-20 09:27:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:29,740 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2022-11-20 09:27:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:27:29,743 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 [2022-11-20 09:27:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:29,753 INFO L225 Difference]: With dead ends: 109 [2022-11-20 09:27:29,754 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 09:27:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:27:29,764 INFO L413 NwaCegarLoop]: 114 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, 114 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 [2022-11-20 09:27:29,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 09:27:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-20 09:27:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 58 states have (on average 1.8620689655172413) internal successors, (108), 103 states have internal predecessors, (108), 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) [2022-11-20 09:27:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2022-11-20 09:27:29,816 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 4 [2022-11-20 09:27:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:29,817 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2022-11-20 09:27:29,817 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) [2022-11-20 09:27:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2022-11-20 09:27:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:27:29,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:29,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:27:29,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:29,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 889700811, now seen corresponding path program 1 times [2022-11-20 09:27:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002181574] [2022-11-20 09:27:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:27:29,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629640816] [2022-11-20 09:27:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:29,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:29,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:30,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:30,086 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 [2022-11-20 09:27:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002181574] [2022-11-20 09:27:30,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:27:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629640816] [2022-11-20 09:27:30,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629640816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257097574] [2022-11-20 09:27:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:30,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:30,113 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 09:27:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,271 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-11-20 09:27:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:30,272 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), 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 6 [2022-11-20 09:27:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,273 INFO L225 Difference]: With dead ends: 106 [2022-11-20 09:27:30,273 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 09:27:30,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:30,275 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 09:27:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 09:27:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 58 states have (on average 1.8448275862068966) internal successors, (107), 102 states have internal predecessors, (107), 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) [2022-11-20 09:27:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2022-11-20 09:27:30,283 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 6 [2022-11-20 09:27:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,284 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2022-11-20 09:27:30,284 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), 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) [2022-11-20 09:27:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2022-11-20 09:27:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 09:27:30,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:30,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1810921558, now seen corresponding path program 1 times [2022-11-20 09:27:30,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312701587] [2022-11-20 09:27:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:27:30,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475972161] [2022-11-20 09:27:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:30,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:30,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:27:30,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:30,663 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 8 treesize of output 7 [2022-11-20 09:27:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312701587] [2022-11-20 09:27:30,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:27:30,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475972161] [2022-11-20 09:27:30,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475972161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:30,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456816602] [2022-11-20 09:27:30,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:30,705 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:27:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,861 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2022-11-20 09:27:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:30,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2022-11-20 09:27:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,867 INFO L225 Difference]: With dead ends: 105 [2022-11-20 09:27:30,867 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 09:27:30,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:30,871 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 12 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 266 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 09:27:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 09:27:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 101 states have internal predecessors, (106), 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) [2022-11-20 09:27:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2022-11-20 09:27:30,884 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 7 [2022-11-20 09:27:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,884 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2022-11-20 09:27:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:27:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2022-11-20 09:27:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:30,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:27:31,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 09:27:31,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash -713444144, now seen corresponding path program 1 times [2022-11-20 09:27:31,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145469326] [2022-11-20 09:27:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:27:31,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106127466] [2022-11-20 09:27:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:31,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:31,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:31,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:27:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:27:31,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:31,294 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:27:31,295 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 17 treesize of output 21 [2022-11-20 09:27:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:31,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:31,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145469326] [2022-11-20 09:27:31,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:27:31,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106127466] [2022-11-20 09:27:31,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106127466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:31,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002899338] [2022-11-20 09:27:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:31,303 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:27:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:31,563 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2022-11-20 09:27:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-20 09:27:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:31,567 INFO L225 Difference]: With dead ends: 132 [2022-11-20 09:27:31,567 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 09:27:31,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:31,573 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 69 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:31,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 344 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:27:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 09:27:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 102. [2022-11-20 09:27:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 58 states have (on average 1.7758620689655173) internal successors, (103), 98 states have internal predecessors, (103), 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) [2022-11-20 09:27:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2022-11-20 09:27:31,597 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 26 [2022-11-20 09:27:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,598 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2022-11-20 09:27:31,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:27:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2022-11-20 09:27:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:31,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:31,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:27:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:31,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash -713444143, now seen corresponding path program 1 times [2022-11-20 09:27:31,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413571902] [2022-11-20 09:27:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:27:31,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702616208] [2022-11-20 09:27:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:31,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:31,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:27:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:27:31,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:32,052 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 [2022-11-20 09:27:32,068 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 [2022-11-20 09:27:36,323 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 48 treesize of output 42 [2022-11-20 09:27:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:41,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413571902] [2022-11-20 09:27:41,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:27:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702616208] [2022-11-20 09:27:41,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702616208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:41,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:41,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769834803] [2022-11-20 09:27:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:41,481 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:41,487 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2022-11-20 09:27:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-20 09:27:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:41,488 INFO L225 Difference]: With dead ends: 106 [2022-11-20 09:27:41,489 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 09:27:41,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:41,492 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:41,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 50 Unchecked, 0.0s Time] [2022-11-20 09:27:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 09:27:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-20 09:27:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.7540983606557377) internal successors, (107), 102 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:27:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2022-11-20 09:27:41,522 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 26 [2022-11-20 09:27:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:41,523 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2022-11-20 09:27:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2022-11-20 09:27:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:27:41,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:41,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:41,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:41,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1132457640, now seen corresponding path program 1 times [2022-11-20 09:27:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328600754] [2022-11-20 09:27:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:41,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:27:41,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271614735] [2022-11-20 09:27:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:41,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:41,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:27:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 09:27:41,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:42,041 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 [2022-11-20 09:27:42,084 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 [2022-11-20 09:27:46,396 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 48 treesize of output 42 [2022-11-20 09:27:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:50,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328600754] [2022-11-20 09:27:50,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:27:50,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271614735] [2022-11-20 09:27:50,798 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 09:27:50,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-20 09:27:50,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:27:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:27:50,999 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2022-11-20 09:27:51,008 INFO L158 Benchmark]: Toolchain (without parser) took 23328.12ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 130.9MB in the beginning and 118.0MB in the end (delta: 12.8MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:51,008 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 94.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:51,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.21ms. Allocated memory is still 165.7MB. Free memory was 130.9MB in the beginning and 127.5MB in the end (delta: 3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:27:51,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.49ms. Allocated memory is still 165.7MB. Free memory was 127.5MB in the beginning and 124.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:51,009 INFO L158 Benchmark]: Boogie Preprocessor took 53.87ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 123.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:51,009 INFO L158 Benchmark]: RCFGBuilder took 901.94ms. Allocated memory is still 165.7MB. Free memory was 123.4MB in the beginning and 101.8MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:51,010 INFO L158 Benchmark]: TraceAbstraction took 21681.43ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 101.3MB in the beginning and 118.0MB in the end (delta: -16.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-11-20 09:27:51,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 94.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.21ms. Allocated memory is still 165.7MB. Free memory was 130.9MB in the beginning and 127.5MB in the end (delta: 3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.49ms. Allocated memory is still 165.7MB. Free memory was 127.5MB in the beginning and 124.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.87ms. Allocated memory is still 165.7MB. Free memory was 124.9MB in the beginning and 123.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 901.94ms. Allocated memory is still 165.7MB. Free memory was 123.4MB in the beginning and 101.8MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 21681.43ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 101.3MB in the beginning and 118.0MB in the end (delta: -16.7MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) 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_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0219.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN --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 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 --- 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-6b4ec56 [2022-11-20 09:27:53,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:53,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:53,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:53,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:53,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:53,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:53,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:53,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:53,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:53,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:53,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:53,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:53,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:53,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:53,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:53,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:53,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:53,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:53,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:53,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:53,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:53,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:53,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:53,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:53,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:53,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:53,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:53,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:53,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:53,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:53,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:53,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:53,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:53,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:53,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:53,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:53,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:53,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:53,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:53,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:53,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 09:27:53,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:53,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:53,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:53,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:53,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:53,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:53,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:53,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:53,211 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:53,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:53,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:53,212 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:53,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:53,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:53,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:53,213 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:27:53,213 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:27:53,213 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:27:53,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:53,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:27:53,217 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:27:53,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:27:53,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:53,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:53,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:53,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:53,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:53,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:53,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:53,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:53,223 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:27:53,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:27:53,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:27:53,224 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 [2022-11-20 09:27:53,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:53,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:53,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:53,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:53,612 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:53,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety/test-0219.i [2022-11-20 09:27:56,765 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:57,018 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:57,025 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/sv-benchmarks/c/memsafety/test-0219.i [2022-11-20 09:27:57,043 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/a533ad232/b2568e922a2b430c8b7314d48e1a9ea1/FLAGd04d46566 [2022-11-20 09:27:57,057 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/data/a533ad232/b2568e922a2b430c8b7314d48e1a9ea1 [2022-11-20 09:27:57,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:57,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:57,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:57,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:57,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:57,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324ed294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57, skipping insertion in model container [2022-11-20 09:27:57,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:57,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:57,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:57,565 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:57,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:57,681 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:57,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57 WrapperNode [2022-11-20 09:27:57,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:57,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:57,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:57,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:57,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,750 INFO L138 Inliner]: procedures = 181, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112 [2022-11-20 09:27:57,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:57,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:57,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:57,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:57,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:57,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:57,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:57,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:57,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (1/1) ... [2022-11-20 09:27:57,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:57,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:57,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2022-11-20 09:27:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2022-11-20 09:27:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:27:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:58,141 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:58,151 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:58,773 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:58,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:58,781 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:27:58,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:58 BoogieIcfgContainer [2022-11-20 09:27:58,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:58,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:58,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:58,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:58,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:57" (1/3) ... [2022-11-20 09:27:58,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6500469b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:58, skipping insertion in model container [2022-11-20 09:27:58,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:57" (2/3) ... [2022-11-20 09:27:58,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6500469b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:58, skipping insertion in model container [2022-11-20 09:27:58,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:58" (3/3) ... [2022-11-20 09:27:58,793 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0219.i [2022-11-20 09:27:58,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:58,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-20 09:27:58,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:58,872 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ade43bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:58,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-20 09:27:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 57 states have (on average 2.017543859649123) internal successors, (115), 103 states have internal predecessors, (115), 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) [2022-11-20 09:27:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:27:58,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:58,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:27:58,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash 928008, now seen corresponding path program 1 times [2022-11-20 09:27:58,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:27:58,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118214381] [2022-11-20 09:27:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:58,911 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 [2022-11-20 09:27:58,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:27:58,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:27:58,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:27:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:59,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:27:59,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:59,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:59,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:27:59,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118214381] [2022-11-20 09:27:59,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118214381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:59,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:59,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092350476] [2022-11-20 09:27:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:59,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:27:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:27:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:27:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:27:59,105 INFO L87 Difference]: Start difference. First operand has 107 states, 57 states have (on average 2.017543859649123) internal successors, (115), 103 states have internal predecessors, (115), 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) [2022-11-20 09:27:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:59,131 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2022-11-20 09:27:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:27:59,133 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 [2022-11-20 09:27:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:59,142 INFO L225 Difference]: With dead ends: 107 [2022-11-20 09:27:59,143 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 09:27:59,144 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 [2022-11-20 09:27:59,148 INFO L413 NwaCegarLoop]: 112 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, 112 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 [2022-11-20 09:27:59,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 09:27:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 09:27:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 101 states have internal predecessors, (106), 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) [2022-11-20 09:27:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2022-11-20 09:27:59,194 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 4 [2022-11-20 09:27:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:59,194 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2022-11-20 09:27:59,194 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) [2022-11-20 09:27:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2022-11-20 09:27:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:27:59,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:59,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:27:59,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 09:27:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:27:59,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:27:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 889698825, now seen corresponding path program 1 times [2022-11-20 09:27:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:27:59,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915567659] [2022-11-20 09:27:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:27:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:27:59,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:27:59,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:27:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:59,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:27:59,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:59,586 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 [2022-11-20 09:27:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:59,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:27:59,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:27:59,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915567659] [2022-11-20 09:27:59,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915567659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:59,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:59,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678765801] [2022-11-20 09:27:59,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:59,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:27:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:59,648 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 09:27:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:59,859 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2022-11-20 09:27:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:59,860 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), 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 6 [2022-11-20 09:27:59,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:59,861 INFO L225 Difference]: With dead ends: 104 [2022-11-20 09:27:59,861 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 09:27:59,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:59,863 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:59,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 159 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:27:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 09:27:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-11-20 09:27:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 56 states have (on average 1.875) internal successors, (105), 100 states have internal predecessors, (105), 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) [2022-11-20 09:27:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2022-11-20 09:27:59,874 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 6 [2022-11-20 09:27:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:59,875 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2022-11-20 09:27:59,875 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), 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) [2022-11-20 09:27:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2022-11-20 09:27:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 09:27:59,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:59,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:59,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:00,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1810859990, now seen corresponding path program 1 times [2022-11-20 09:28:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:00,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771817692] [2022-11-20 09:28:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:00,090 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 [2022-11-20 09:28:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:00,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:00,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:00,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:00,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:00,229 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 5 [2022-11-20 09:28:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:00,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:00,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771817692] [2022-11-20 09:28:00,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771817692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:00,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:00,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741247419] [2022-11-20 09:28:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:00,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:00,272 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:28:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:00,640 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2022-11-20 09:28:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:00,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2022-11-20 09:28:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:00,642 INFO L225 Difference]: With dead ends: 103 [2022-11-20 09:28:00,642 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 09:28:00,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:00,644 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 12 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:00,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 260 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:28:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 09:28:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-20 09:28:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 56 states have (on average 1.8571428571428572) internal successors, (104), 99 states have internal predecessors, (104), 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) [2022-11-20 09:28:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2022-11-20 09:28:00,655 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 7 [2022-11-20 09:28:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:00,656 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2022-11-20 09:28:00,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:28:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2022-11-20 09:28:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:28:00,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:00,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:00,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:00,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:00,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:00,871 INFO L85 PathProgramCache]: Analyzing trace with hash 994596048, now seen corresponding path program 1 times [2022-11-20 09:28:00,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:00,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79098188] [2022-11-20 09:28:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:00,872 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 [2022-11-20 09:28:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:00,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:00,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:01,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:01,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:01,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:01,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:01,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79098188] [2022-11-20 09:28:01,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79098188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:01,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:01,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371331423] [2022-11-20 09:28:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:01,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:01,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:01,729 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:28:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:02,150 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2022-11-20 09:28:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:02,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-20 09:28:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:02,154 INFO L225 Difference]: With dead ends: 107 [2022-11-20 09:28:02,154 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 09:28:02,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:02,157 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 9 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:02,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 400 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:28:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 09:28:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-11-20 09:28:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 57 states have (on average 1.8421052631578947) internal successors, (105), 100 states have internal predecessors, (105), 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) [2022-11-20 09:28:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2022-11-20 09:28:02,168 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 26 [2022-11-20 09:28:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:02,168 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2022-11-20 09:28:02,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:28:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2022-11-20 09:28:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:28:02,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:02,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:02,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:02,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:02,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:02,375 INFO L85 PathProgramCache]: Analyzing trace with hash -207095898, now seen corresponding path program 1 times [2022-11-20 09:28:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:02,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636058466] [2022-11-20 09:28:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:02,376 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 [2022-11-20 09:28:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:02,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:02,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:02,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:03,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:04,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636058466] [2022-11-20 09:28:04,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636058466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:04,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:04,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 09:28:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423787415] [2022-11-20 09:28:04,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:28:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:28:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:28:04,017 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:05,300 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-20 09:28:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:28:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-11-20 09:28:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:05,303 INFO L225 Difference]: With dead ends: 113 [2022-11-20 09:28:05,303 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 09:28:05,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:05,304 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 23 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 701 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 09:28:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 09:28:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-20 09:28:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 60 states have (on average 1.8) internal successors, (108), 103 states have internal predecessors, (108), 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) [2022-11-20 09:28:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2022-11-20 09:28:05,314 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 28 [2022-11-20 09:28:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:05,314 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2022-11-20 09:28:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2022-11-20 09:28:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 09:28:05,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:05,316 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:05,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:05,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:05,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1791280848, now seen corresponding path program 2 times [2022-11-20 09:28:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260465642] [2022-11-20 09:28:05,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:05,530 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 [2022-11-20 09:28:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:05,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:05,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:05,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:28:05,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:05,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:05,688 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 [2022-11-20 09:28:05,803 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:28:05,806 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 [2022-11-20 09:28:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 09:28:05,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:05,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260465642] [2022-11-20 09:28:05,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260465642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:05,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:05,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:28:05,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794239431] [2022-11-20 09:28:05,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:05,848 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:06,407 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2022-11-20 09:28:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:28:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-20 09:28:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:06,410 INFO L225 Difference]: With dead ends: 134 [2022-11-20 09:28:06,411 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 09:28:06,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:06,412 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 60 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:06,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 269 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:28:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 09:28:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 104. [2022-11-20 09:28:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 60 states have (on average 1.75) internal successors, (105), 100 states have internal predecessors, (105), 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) [2022-11-20 09:28:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2022-11-20 09:28:06,421 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 34 [2022-11-20 09:28:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:06,422 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2022-11-20 09:28:06,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2022-11-20 09:28:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 09:28:06,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:06,424 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:06,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:06,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:06,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1791280849, now seen corresponding path program 1 times [2022-11-20 09:28:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:06,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981065046] [2022-11-20 09:28:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:06,637 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 [2022-11-20 09:28:06,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:06,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:06,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:06,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:06,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:08,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:28:10,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981065046] [2022-11-20 09:28:10,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981065046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:10,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:10,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:28:10,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318549036] [2022-11-20 09:28:10,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:28:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:28:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:10,073 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:12,503 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2022-11-20 09:28:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:28:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-11-20 09:28:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:12,506 INFO L225 Difference]: With dead ends: 114 [2022-11-20 09:28:12,512 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 09:28:12,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:28:12,514 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 75 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 978 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:28:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 09:28:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-20 09:28:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 64 states have (on average 1.703125) internal successors, (109), 104 states have internal predecessors, (109), 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) [2022-11-20 09:28:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2022-11-20 09:28:12,535 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 34 [2022-11-20 09:28:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:12,536 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2022-11-20 09:28:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2022-11-20 09:28:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 09:28:12,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:12,537 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:12,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:12,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:12,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 896137425, now seen corresponding path program 2 times [2022-11-20 09:28:12,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405569142] [2022-11-20 09:28:12,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:12,746 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 [2022-11-20 09:28:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:12,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:12,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:12,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:12,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:12,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:28:12,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:13,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:28:13,131 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 [2022-11-20 09:28:14,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:14,905 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 [2022-11-20 09:28:14,917 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:28:14,918 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 [2022-11-20 09:28:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:28:15,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:15,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:15,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405569142] [2022-11-20 09:28:15,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405569142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:15,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:15,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829918207] [2022-11-20 09:28:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:15,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:15,034 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:18,065 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2022-11-20 09:28:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:18,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-11-20 09:28:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:18,067 INFO L225 Difference]: With dead ends: 135 [2022-11-20 09:28:18,067 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 09:28:18,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:18,068 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 168 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 195 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 09:28:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 09:28:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2022-11-20 09:28:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.65625) internal successors, (106), 101 states have internal predecessors, (106), 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) [2022-11-20 09:28:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2022-11-20 09:28:18,074 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 42 [2022-11-20 09:28:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:18,075 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2022-11-20 09:28:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2022-11-20 09:28:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 09:28:18,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:18,076 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:18,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:18,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:18,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash 186717587, now seen corresponding path program 1 times [2022-11-20 09:28:18,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318772898] [2022-11-20 09:28:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:18,293 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 [2022-11-20 09:28:18,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:18,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:18,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:18,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:28:18,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:18,697 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 [2022-11-20 09:28:18,836 WARN L859 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_355 (_ BitVec 1))) (= (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| v_ArrVal_355) |c_#valid|)) (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 09:28:19,130 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:28:19,130 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 [2022-11-20 09:28:19,170 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:28:19,171 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 [2022-11-20 09:28:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 86 not checked. [2022-11-20 09:28:19,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 09:28:19,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318772898] [2022-11-20 09:28:19,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318772898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:19,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:19,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2022-11-20 09:28:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932942645] [2022-11-20 09:28:19,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:28:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:28:19,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2022-11-20 09:28:19,809 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:28:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:20,649 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2022-11-20 09:28:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-11-20 09:28:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:20,651 INFO L225 Difference]: With dead ends: 144 [2022-11-20 09:28:20,651 INFO L226 Difference]: Without dead ends: 144 [2022-11-20 09:28:20,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2022-11-20 09:28:20,652 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:20,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 423 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 334 Invalid, 0 Unknown, 170 Unchecked, 0.7s Time] [2022-11-20 09:28:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-20 09:28:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 114. [2022-11-20 09:28:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 109 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 09:28:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2022-11-20 09:28:20,658 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 46 [2022-11-20 09:28:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:20,658 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2022-11-20 09:28:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:28:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2022-11-20 09:28:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 09:28:20,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:20,660 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:20,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:20,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 186717588, now seen corresponding path program 1 times [2022-11-20 09:28:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038884948] [2022-11-20 09:28:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:20,865 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:20,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 09:28:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:21,261 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 [2022-11-20 09:28:21,269 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 8 treesize of output 7 [2022-11-20 09:28:23,115 WARN L859 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_472 (_ BitVec 32))) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| v_ArrVal_472) |c_#length|)) (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 09:28:23,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:23,237 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 [2022-11-20 09:28:23,251 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:28:23,251 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 [2022-11-20 09:28:23,363 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 09:28:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 86 not checked. [2022-11-20 09:28:23,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:24,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:24,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038884948] [2022-11-20 09:28:24,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038884948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:24,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147730069] [2022-11-20 09:28:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:24,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:28:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:28:24,627 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:28:24,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-20 09:28:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 09:28:25,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:25,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 09:28:25,502 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 8 treesize of output 7 [2022-11-20 09:28:26,869 WARN L859 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_587 (_ BitVec 32))) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| v_ArrVal_587) |c_#length|)))) is different from true [2022-11-20 09:28:26,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:27,000 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 [2022-11-20 09:28:27,012 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 09:28:27,013 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 [2022-11-20 09:28:27,059 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:27,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 09:28:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 86 not checked. [2022-11-20 09:28:27,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1147730069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:27,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2022-11-20 09:28:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425047984] [2022-11-20 09:28:27,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=147, Unknown=2, NotChecked=50, Total=240 [2022-11-20 09:28:27,972 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:28:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:31,966 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2022-11-20 09:28:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:28:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2022-11-20 09:28:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:31,968 INFO L225 Difference]: With dead ends: 114 [2022-11-20 09:28:31,968 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 09:28:31,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=55, Invalid=223, Unknown=2, NotChecked=62, Total=342 [2022-11-20 09:28:31,969 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 2 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:31,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 417 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 388 Invalid, 0 Unknown, 225 Unchecked, 2.7s Time] [2022-11-20 09:28:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 09:28:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-20 09:28:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 109 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 09:28:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2022-11-20 09:28:31,974 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 46 [2022-11-20 09:28:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:31,978 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2022-11-20 09:28:31,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:28:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2022-11-20 09:28:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 09:28:31,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:31,984 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:32,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:32,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 09:28:32,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash 520999004, now seen corresponding path program 1 times [2022-11-20 09:28:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:32,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249078998] [2022-11-20 09:28:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:32,386 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 [2022-11-20 09:28:32,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:32,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:32,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:32,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:28:32,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:32,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-20 09:28:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:28:33,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:33,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249078998] [2022-11-20 09:28:33,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249078998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:33,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:33,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:28:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443327026] [2022-11-20 09:28:33,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:33,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:33,366 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:28:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:34,481 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2022-11-20 09:28:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2022-11-20 09:28:34,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:34,483 INFO L225 Difference]: With dead ends: 118 [2022-11-20 09:28:34,483 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 09:28:34,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:28:34,484 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 244 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:34,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 449 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 09:28:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 09:28:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 113. [2022-11-20 09:28:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.547945205479452) internal successors, (113), 108 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 09:28:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2022-11-20 09:28:34,489 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 49 [2022-11-20 09:28:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:34,490 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2022-11-20 09:28:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:28:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2022-11-20 09:28:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:28:34,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:34,491 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2022-11-20 09:28:34,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-20 09:28:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:34,707 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:34,708 INFO L85 PathProgramCache]: Analyzing trace with hash -930488384, now seen corresponding path program 1 times [2022-11-20 09:28:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:34,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245903407] [2022-11-20 09:28:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:34,708 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 [2022-11-20 09:28:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:34,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:34,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:35,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:28:35,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:35,182 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_827 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_827))) is different from true [2022-11-20 09:28:35,223 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_827 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_827))) is different from true [2022-11-20 09:28:35,257 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:35,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 09:28:35,381 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_828 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_828) |c_#valid|)) is different from true [2022-11-20 09:28:35,422 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_828 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_828) |c_#valid|)) is different from true [2022-11-20 09:28:35,453 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:35,453 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 28 [2022-11-20 09:28:35,580 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:35,580 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 21 treesize of output 31 [2022-11-20 09:28:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 86 not checked. [2022-11-20 09:28:35,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:36,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:36,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245903407] [2022-11-20 09:28:36,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245903407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:36,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [832272621] [2022-11-20 09:28:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:36,303 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:28:36,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:28:36,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:28:36,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-20 09:28:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:28:37,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:37,870 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_953 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_953) |c_#valid|)) is different from true [2022-11-20 09:28:37,910 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_953 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_953) |c_#valid|)) is different from true [2022-11-20 09:28:37,935 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:37,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-20 09:28:37,999 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_954 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_954) |c_#valid|)) is different from true [2022-11-20 09:28:38,036 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_954 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_954))) is different from true [2022-11-20 09:28:38,063 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:38,063 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 28 [2022-11-20 09:28:38,126 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 09:28:38,127 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 21 treesize of output 31 [2022-11-20 09:28:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 86 not checked. [2022-11-20 09:28:38,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:38,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [832272621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:38,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:38,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 20 [2022-11-20 09:28:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843954425] [2022-11-20 09:28:38,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:28:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:28:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=286, Unknown=8, NotChecked=344, Total=756 [2022-11-20 09:28:38,750 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 22 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:38,905 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_828 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_828) |c_#valid|)) (exists ((v_ArrVal_827 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_827))) (exists ((v_ArrVal_954 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_954) |c_#valid|)) (exists ((v_ArrVal_953 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_~ptr~0#1.base| v_ArrVal_953) |c_#valid|))) is different from true [2022-11-20 09:28:38,909 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_953 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_953) |c_#valid|)) (exists ((v_ArrVal_827 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_827))) (exists ((v_ArrVal_954 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_954))) (exists ((v_ArrVal_828 (_ BitVec 1))) (= (store |c_old(#valid)| |c_calloc_model_#res#1.base| v_ArrVal_828) |c_#valid|))) is different from true [2022-11-20 09:28:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:39,692 INFO L93 Difference]: Finished difference Result 182 states and 195 transitions. [2022-11-20 09:28:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:28:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-11-20 09:28:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:39,695 INFO L225 Difference]: With dead ends: 182 [2022-11-20 09:28:39,695 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 09:28:39,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=419, Unknown=12, NotChecked=530, Total=1122 [2022-11-20 09:28:39,698 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 138 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1238 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:39,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 384 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 373 Invalid, 0 Unknown, 1238 Unchecked, 0.8s Time] [2022-11-20 09:28:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 09:28:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2022-11-20 09:28:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 138 states have internal predecessors, (150), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:28:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2022-11-20 09:28:39,705 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 52 [2022-11-20 09:28:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:39,706 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2022-11-20 09:28:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2022-11-20 09:28:39,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 09:28:39,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:39,711 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2022-11-20 09:28:39,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:39,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:40,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash -930488383, now seen corresponding path program 1 times [2022-11-20 09:28:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:40,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254809289] [2022-11-20 09:28:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:40,119 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 [2022-11-20 09:28:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:40,120 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:40,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 09:28:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:40,685 WARN L859 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1079 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |calloc_model_~ptr~0#1.base| v_ArrVal_1079))) (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-20 09:28:40,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:40,807 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 [2022-11-20 09:28:41,071 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:41,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 09:28:41,213 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:41,214 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 16 treesize of output 22 [2022-11-20 09:28:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 86 not checked. [2022-11-20 09:28:41,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:43,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:43,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254809289] [2022-11-20 09:28:43,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254809289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:43,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1908314987] [2022-11-20 09:28:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:43,479 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 09:28:43,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 09:28:43,480 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 09:28:43,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-20 09:28:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:28:45,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:45,312 WARN L859 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_1205 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| v_ArrVal_1205))) (exists ((v_ArrVal_1206 (_ BitVec 32))) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| v_ArrVal_1206) |c_#length|)))) is different from true [2022-11-20 09:28:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:45,459 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 [2022-11-20 09:28:45,484 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 09:28:45,484 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 [2022-11-20 09:28:45,545 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1207 (_ BitVec 32)) (|calloc_model_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |calloc_model_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1207) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |calloc_model_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-20 09:28:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:45,676 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 [2022-11-20 09:28:45,720 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:45,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 09:28:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 86 not checked. [2022-11-20 09:28:45,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:52,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1908314987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:52,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:52,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 15 [2022-11-20 09:28:52,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774785453] [2022-11-20 09:28:52,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:52,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:28:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:52,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:28:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=339, Unknown=4, NotChecked=120, Total=552 [2022-11-20 09:28:52,587 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 17 states, 16 states have (on average 4.0625) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:53,913 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2022-11-20 09:28:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:53,914 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-11-20 09:28:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:53,915 INFO L225 Difference]: With dead ends: 171 [2022-11-20 09:28:53,915 INFO L226 Difference]: Without dead ends: 171 [2022-11-20 09:28:53,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=148, Invalid=670, Unknown=6, NotChecked=168, Total=992 [2022-11-20 09:28:53,916 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 5 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:53,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 662 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 245 Invalid, 0 Unknown, 518 Unchecked, 0.6s Time] [2022-11-20 09:28:53,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-20 09:28:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2022-11-20 09:28:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 124 states have (on average 1.3951612903225807) internal successors, (173), 160 states have internal predecessors, (173), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 09:28:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 187 transitions. [2022-11-20 09:28:53,923 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 187 transitions. Word has length 52 [2022-11-20 09:28:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:53,923 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 187 transitions. [2022-11-20 09:28:53,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 09:28:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 187 transitions. [2022-11-20 09:28:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:28:53,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:53,925 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2022-11-20 09:28:53,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:54,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:54,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1219631202, now seen corresponding path program 1 times [2022-11-20 09:28:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79102444] [2022-11-20 09:28:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:54,327 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 [2022-11-20 09:28:54,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:54,328 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:54,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:28:54,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:28:54,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:54,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:54,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79102444] [2022-11-20 09:28:54,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79102444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:54,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:54,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907476675] [2022-11-20 09:28:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:54,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:54,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:54,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:54,743 INFO L87 Difference]: Start difference. First operand 169 states and 187 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-20 09:28:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:54,976 INFO L93 Difference]: Finished difference Result 195 states and 212 transitions. [2022-11-20 09:28:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:54,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 53 [2022-11-20 09:28:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:54,978 INFO L225 Difference]: With dead ends: 195 [2022-11-20 09:28:54,979 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 09:28:54,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:54,979 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 141 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:54,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 130 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 09:28:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 168. [2022-11-20 09:28:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.3790322580645162) internal successors, (171), 159 states have internal predecessors, (171), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 09:28:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2022-11-20 09:28:54,987 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 185 transitions. Word has length 53 [2022-11-20 09:28:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:54,987 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 185 transitions. [2022-11-20 09:28:54,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2022-11-20 09:28:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 185 transitions. [2022-11-20 09:28:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:28:54,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:54,989 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2022-11-20 09:28:55,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:55,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:55,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1219631203, now seen corresponding path program 1 times [2022-11-20 09:28:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:55,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738541653] [2022-11-20 09:28:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:55,209 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 [2022-11-20 09:28:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:55,210 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:55,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:55,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:28:55,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:28:55,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:55,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:55,911 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 22 treesize of output 26 [2022-11-20 09:28:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:28:56,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738541653] [2022-11-20 09:28:56,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738541653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:56,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:28:56,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 09:28:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674793757] [2022-11-20 09:28:56,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:56,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:56,654 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:28:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:58,166 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2022-11-20 09:28:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:28:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2022-11-20 09:28:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:58,169 INFO L225 Difference]: With dead ends: 167 [2022-11-20 09:28:58,169 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 09:28:58,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:58,170 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 224 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:58,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 374 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 09:28:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 09:28:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 09:28:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 158 states have internal predecessors, (169), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 09:28:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2022-11-20 09:28:58,176 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 53 [2022-11-20 09:28:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:58,176 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2022-11-20 09:28:58,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:28:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2022-11-20 09:28:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 09:28:58,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:58,178 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2022-11-20 09:28:58,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:58,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:58,391 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash -460485500, now seen corresponding path program 1 times [2022-11-20 09:28:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:58,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676853872] [2022-11-20 09:28:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:58,392 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 [2022-11-20 09:28:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:58,393 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:58,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:58,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:58,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:28:58,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:58,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676853872] [2022-11-20 09:28:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676853872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:58,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:58,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:28:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319440642] [2022-11-20 09:28:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:28:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:28:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:28:58,892 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:59,137 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2022-11-20 09:28:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:28:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2022-11-20 09:28:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:59,139 INFO L225 Difference]: With dead ends: 166 [2022-11-20 09:28:59,139 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 09:28:59,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:59,140 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 160 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:59,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 102 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 09:28:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-20 09:28:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.346774193548387) internal successors, (167), 157 states have internal predecessors, (167), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 09:28:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-11-20 09:28:59,145 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 55 [2022-11-20 09:28:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:59,146 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-11-20 09:28:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:28:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-11-20 09:28:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 09:28:59,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:59,147 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1] [2022-11-20 09:28:59,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:28:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:28:59,355 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:28:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash -197975025, now seen corresponding path program 1 times [2022-11-20 09:28:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:28:59,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416448622] [2022-11-20 09:28:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:59,356 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 [2022-11-20 09:28:59,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:28:59,362 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:28:59,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 09:28:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:59,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:28:59,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:28:59,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:59,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:28:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416448622] [2022-11-20 09:28:59,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416448622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:59,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:59,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773785993] [2022-11-20 09:28:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:59,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:28:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:59,797 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,007 INFO L93 Difference]: Finished difference Result 174 states and 189 transitions. [2022-11-20 09:29:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2022-11-20 09:29:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,008 INFO L225 Difference]: With dead ends: 174 [2022-11-20 09:29:00,009 INFO L226 Difference]: Without dead ends: 174 [2022-11-20 09:29:00,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:00,009 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 139 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 67 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:29:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-20 09:29:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2022-11-20 09:29:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 106 states have (on average 1.320754716981132) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2022-11-20 09:29:00,015 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 58 [2022-11-20 09:29:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:00,016 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2022-11-20 09:29:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2022-11-20 09:29:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 09:29:00,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:00,017 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1] [2022-11-20 09:29:00,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:00,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -197975024, now seen corresponding path program 1 times [2022-11-20 09:29:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:00,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099658577] [2022-11-20 09:29:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:00,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:00,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:00,234 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:00,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:00,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:29:00,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:29:00,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:00,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:00,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099658577] [2022-11-20 09:29:00,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099658577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:00,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:00,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476754655] [2022-11-20 09:29:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:00,911 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:01,133 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2022-11-20 09:29:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:01,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2022-11-20 09:29:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:01,134 INFO L225 Difference]: With dead ends: 138 [2022-11-20 09:29:01,135 INFO L226 Difference]: Without dead ends: 138 [2022-11-20 09:29:01,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:01,136 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 181 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:01,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 88 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:29:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-20 09:29:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-11-20 09:29:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 106 states have (on average 1.2735849056603774) internal successors, (135), 129 states have internal predecessors, (135), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2022-11-20 09:29:01,141 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 58 [2022-11-20 09:29:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,142 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2022-11-20 09:29:01,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:29:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2022-11-20 09:29:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 09:29:01,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,143 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1, 1] [2022-11-20 09:29:01,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:01,358 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1842258422, now seen corresponding path program 1 times [2022-11-20 09:29:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:01,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603807635] [2022-11-20 09:29:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,360 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 [2022-11-20 09:29:01,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:01,361 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:01,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:29:01,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:02,076 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 [2022-11-20 09:29:02,107 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 [2022-11-20 09:29:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:29:02,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:02,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:02,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603807635] [2022-11-20 09:29:02,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603807635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:02,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:02,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:02,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027587282] [2022-11-20 09:29:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:02,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:02,126 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-11-20 09:29:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:02,861 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2022-11-20 09:29:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:29:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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 59 [2022-11-20 09:29:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:02,864 INFO L225 Difference]: With dead ends: 163 [2022-11-20 09:29:02,864 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 09:29:02,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:02,865 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 148 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:02,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 200 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:29:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 09:29:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 139. [2022-11-20 09:29:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 131 states have internal predecessors, (138), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2022-11-20 09:29:02,871 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 59 [2022-11-20 09:29:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:02,871 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2022-11-20 09:29:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-11-20 09:29:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2022-11-20 09:29:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 09:29:02,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:02,872 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1, 1] [2022-11-20 09:29:02,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:03,083 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1842258421, now seen corresponding path program 1 times [2022-11-20 09:29:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444871506] [2022-11-20 09:29:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:03,084 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 [2022-11-20 09:29:03,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:03,084 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:03,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:03,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 09:29:03,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:04,007 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 [2022-11-20 09:29:04,015 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 [2022-11-20 09:29:04,060 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 [2022-11-20 09:29:04,065 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 [2022-11-20 09:29:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:29:04,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:04,294 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 [2022-11-20 09:29:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:04,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:04,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:04,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:04,647 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 28 treesize of output 32 [2022-11-20 09:29:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:29:05,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:05,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444871506] [2022-11-20 09:29:05,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444871506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:05,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:05,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 09:29:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974357611] [2022-11-20 09:29:05,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:29:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:29:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:05,676 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 19 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:08,023 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2022-11-20 09:29:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2022-11-20 09:29:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:08,025 INFO L225 Difference]: With dead ends: 177 [2022-11-20 09:29:08,025 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 09:29:08,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:29:08,026 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 456 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:08,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 509 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 09:29:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 09:29:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 139. [2022-11-20 09:29:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 131 states have internal predecessors, (137), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2022-11-20 09:29:08,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 59 [2022-11-20 09:29:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2022-11-20 09:29:08,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2022-11-20 09:29:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 09:29:08,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:08,034 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1] [2022-11-20 09:29:08,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-20 09:29:08,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:08,247 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1628481898, now seen corresponding path program 1 times [2022-11-20 09:29:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:08,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127896997] [2022-11-20 09:29:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:08,248 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 [2022-11-20 09:29:08,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:08,248 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:08,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 09:29:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 09:29:08,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:09,293 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 [2022-11-20 09:29:09,300 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 [2022-11-20 09:29:09,361 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 [2022-11-20 09:29:09,367 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 [2022-11-20 09:29:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:29:09,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:09,579 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 60 treesize of output 56 [2022-11-20 09:29:09,582 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 90 treesize of output 82 [2022-11-20 09:29:09,836 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 [2022-11-20 09:29:10,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:10,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-11-20 09:29:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 09:29:11,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127896997] [2022-11-20 09:29:11,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127896997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:11,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:11,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 09:29:11,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085075053] [2022-11-20 09:29:11,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:11,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:29:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:29:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:29:11,113 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:13,287 INFO L93 Difference]: Finished difference Result 176 states and 187 transitions. [2022-11-20 09:29:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2022-11-20 09:29:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:13,289 INFO L225 Difference]: With dead ends: 176 [2022-11-20 09:29:13,290 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 09:29:13,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:29:13,290 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 512 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:13,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 531 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 09:29:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 09:29:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 142. [2022-11-20 09:29:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 134 states have internal predecessors, (141), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2022-11-20 09:29:13,295 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 62 [2022-11-20 09:29:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:13,296 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-11-20 09:29:13,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 09:29:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2022-11-20 09:29:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 09:29:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:13,297 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1] [2022-11-20 09:29:13,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:13,506 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1628481899, now seen corresponding path program 1 times [2022-11-20 09:29:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:13,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044185346] [2022-11-20 09:29:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:13,507 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 [2022-11-20 09:29:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:13,509 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:13,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:29:13,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:14,145 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 [2022-11-20 09:29:14,171 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 [2022-11-20 09:29:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 09:29:14,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:14,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:29:14,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044185346] [2022-11-20 09:29:14,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044185346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:14,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:14,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:14,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909369146] [2022-11-20 09:29:14,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:14,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:14,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:29:14,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:14,184 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-11-20 09:29:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:14,845 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2022-11-20 09:29:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:29:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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 62 [2022-11-20 09:29:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:14,848 INFO L225 Difference]: With dead ends: 173 [2022-11-20 09:29:14,848 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 09:29:14,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:14,849 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 161 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:14,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 215 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:29:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 09:29:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2022-11-20 09:29:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:29:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2022-11-20 09:29:14,854 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 62 [2022-11-20 09:29:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:14,855 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2022-11-20 09:29:14,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-11-20 09:29:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2022-11-20 09:29:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 09:29:14,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:14,856 INFO L195 NwaCegarLoop]: trace histogram [16, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:14,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 09:29:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:29:15,071 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-20 09:29:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1603007047, now seen corresponding path program 1 times [2022-11-20 09:29:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:29:15,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772832697] [2022-11-20 09:29:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:15,072 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 [2022-11-20 09:29:15,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:29:15,073 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 09:29:15,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57eec0ae-860c-4fcd-8a3c-fcd2c2afe2ac/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 09:29:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:15,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 09:29:15,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:15,995 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-20 09:29:15,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2022-11-20 09:29:16,751 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 [2022-11-20 09:29:16,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:16,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 09:29:16,978 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 [2022-11-20 09:29:16,990 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 [2022-11-20 09:29:17,171 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 [2022-11-20 09:29:17,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:17,246 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 1 case distinctions, treesize of input 35 treesize of output 18 [2022-11-20 09:29:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 09:29:17,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:17,469 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 88 treesize of output 84 [2022-11-20 09:29:27,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:29:27,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:27,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2703 treesize of output 2594 [2022-11-20 09:29:47,018 INFO L321 Elim1Store]: treesize reduction 132, result has 63.8 percent of original size [2022-11-20 09:29:47,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 14540 treesize of output 14092